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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply Tungsten

Cas:7440-33-7

Min.Order:1

Negotiable

Type:Other

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Hebei yanxi chemical co.,LTD.

hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developm

Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

Cas:7440-33-7

Min.Order:1 Metric Ton

FOB Price: $1.0 / 3.0

Type:Trading Company

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

Tungsten

Cas:7440-33-7

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

Our advantage:Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scient

TIANFU-CHEM CAS NO.7440-33-7 Tungsten

Cas:7440-33-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Manufacturer supply CAS 7440-33-7 with best quality

Cas:7440-33-7

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

Tungsten 7440-33-7

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Shanghai Minstar Chemical Co., Ltd

Product Name: Tungsten Synonyms: TUNGSTEN, POWDER, <10 MICRON, 99.99+%;TUNGSTEN, WIRE, 1.0MM DIAM., 99.99%;TUNGSTEN, FOIL, 0.5MM THICK, 99.9+%;Tungsten, monocrystalline powder, 0.6-1 micron, 99.9+% metals basis;Tungsten wire;Tungsten wire 99

Tungsten

Cas:7440-33-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

Tungsten CAS:7440-33-7 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediates, st

Tungsten CAS:7440-33-7

Cas:7440-33-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Lonwin Chemical Group Limited

Tungsten CAS: 7440-33-7 Specification Density 2.4±0.1 g/cm3 Boiling Point 49.2±8.0 °C at 760 mmHg Melting Point -110,5°C Molecular Formula C2Br2F4 Molecular Weight 25

Factory supply Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

Tungsten

Cas:7440-33-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

Cas:7440-33-7

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

TUNGSTEN POWDER

Cas:7440-33-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

Tungsten Manufacturer

Cas:7440-33-7

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:grey metal chunks or grey powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:25kg/drum, or as per your request. Application:Used as Pharmaceuti

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Jiangsu Qianyu Molecular Technology Co., LTD.

Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

Buy Top Purity Tungsten

Cas:7440-33-7

Min.Order:0

Negotiable

Type:Trading Company

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EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

Cas:7440-33-7

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Henan Kanbei Chemical Co.,LTD

High quality, competitive price, fast delivery and first-class service we possesses have won the trust and praise of customers. Standard: BP/USP/EP The purity is equal or greater than 99%. As a supplier, we can provide high-quality products. Cle

High purity Tungsten

Cas:7440-33-7

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

Cas:7440-33-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

Cas:7440-33-7

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

Tungsten Manufacturer/High quality/Best price/In stock CAS NO.7440-33-7

Cas:7440-33-7

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

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Hangzhou Ocean Chemical Co., Ltd.

Ocean inorganic department is a professional supplier and exporter engaging in inorganic chemical materials and metal organic compounds. Over the past years, our company is committed to improving the product quality and developing new products, in

Tungsten

Cas:7440-33-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

TUNGSTEN

Cas:7440-33-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

Tungsten atomic absorption standard solution

Cas:7440-33-7

Min.Order:0

Negotiable

Type:Other

inquiry

Wuxi TAA Chemical Industry Co.,LTD.

1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.2. Now we have established long-term stable re

Tungsten atomic absorption standard solution CAS 7440-33-7

Cas:7440-33-7

Min.Order:0

Negotiable

Type:Other

inquiry

Hefei TNJ chemical industry co.,ltd

Name: Tungsten atomic absorption standard solution CAS: 7440-33-7 Molecular Formula: W Molecular Weight: 183.84 Application:Fine chemical

Tungsten atomic absorption standard solution CAS 7440-33-7

Cas:7440-33-7

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

inquiry

Synthetic route

sodium tungstate

sodium tungstate

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With hydrogen byproducts: NaOH, H2O; redn. at 1100°C;100%
With hydrogen byproducts: Na, O2; no reaction until 700°C, 900°C;100%
With hydrogen byproducts: Na, O2; no reaction until 700°C, 900°C;100%
5Na2O*12WO3*28H2O

5Na2O*12WO3*28H2O

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
in hydrogen stream at 900°C;100%
in hydrogen stream at 900°C;100%
tungsten(IV) sulfide

tungsten(IV) sulfide

A

sulfur
7704-34-9

sulfur

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
2000°C, fast react.;A n/a
B 100%
2000°C, fast react.;A n/a
B 100%
1200°C, 2 h;A n/a
B 60%
1200°C, 2 h;A n/a
B 60%
tungsten(VI) oxide

tungsten(VI) oxide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With magnesium In solid byproducts: MgO; (Ar) milled at room temp. and reaction times from few min up to several h; leached (HCl) under stirring; centrifuged; wached (HCl); wached several times (water); dried at 120°C (air);84%
With hydrogen fluoride In not given Electrolysis; in 4.6 n soln. at 95°C, 0.65-1A per cm2 on mercury cathode, with H2SO4 and HCl complete scale pptn.;20%
With hydrogen fine powder at 80 atm, 550-600°C;
tungsten(VI) chloride
13283-01-7

tungsten(VI) chloride

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With magnesium hydride In toluene byproducts: H2; (argon); refluxing WCl6 and MgH2 in toluene in a mill under continuous grinding (8.5 h); washing (toluene), trituration with EtOH, filtration, boiling with concd. HCl, filtration, washing (H2O; EtOH), drying;82.9%
on annealing single crystal tungsten wire covered with Mo single crystal layer;
pptn. on glowing tungsten wire in vac. at 1600-1700 °C;
tungsten dichloride

tungsten dichloride

magnesium
7439-95-4

magnesium

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
redn. at beginning red heat, leaching with water;61.03%
redn. at beginning red heat, leaching with water;61.03%
incomplete reaction at red head;;
incomplete reaction at red head;;
W6I12

W6I12

W6(12+)*12Cl(1-)=W6Cl12

W6(12+)*12Cl(1-)=W6Cl12

A

4Cl(1-)*W6I8(4+)

4Cl(1-)*W6I8(4+)

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
at 600℃; for 12h; Milling; Sealed tube;A 60%
B n/a
tungsten hexacarbonyl
14040-11-0

tungsten hexacarbonyl

1-[{[Bis-(2-diethylphosphanyl-ethyl)-phosphanyl]-methyl}-(2-diethylphosphanyl-ethyl)-phosphanyl]-2-diethylphosphanyl-ethane
99035-49-1

1-[{[Bis-(2-diethylphosphanyl-ethyl)-phosphanyl]-methyl}-(2-diethylphosphanyl-ethyl)-phosphanyl]-2-diethylphosphanyl-ethane

W2(CO)7(C19H43P5)
120120-97-0

W2(CO)7(C19H43P5)

fac,fac-(tungsten)2(carbonyl)6(eHTP)
114221-42-0

fac,fac-(tungsten)2(carbonyl)6(eHTP)

C

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In xylene N2- or Ar atmosphere; addn. of W(CO)6 and org. compd. to xylol, refluxing (5 d); cooling, evapn. (vac.), filtn., dissoln. CH2Cl2, filtn., recrystn. (CH2Cl2/toluene);A 40%
B n/a
C n/a
tungsten diselenide

tungsten diselenide

A

selenium
7782-49-2

selenium

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In neat (no solvent, solid phase) heating of WSe2 single crystal flakes enclosed in envelopes made by thin Ta plates by passing current;A 30%
B n/a
In neat (no solvent, solid phase) heating single crystal flakes of WSe2 by current in high vac.;
tungsten hexacarbonyl
14040-11-0

tungsten hexacarbonyl

Hexamethylbenzene
87-85-4

Hexamethylbenzene

A

W(CO)3(η6-Me6C6)
33505-53-2

W(CO)3(η6-Me6C6)

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In decane under Ar, educts added to n-decane, slowly heated to reflux, refluxed for 20 h with periodical shaking, cooled; filtered through SiO2 with CH2Cl2, evapd. in vac., crystals filtered, washed with pentane, dried in vac.;A 28%
B n/a
iron silicon

iron silicon

tungsten(VI) oxide

tungsten(VI) oxide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With calcium carbide byproducts: CaO, CO; Electric Arc; redn. with carbide ferrosilicium mixt. in elec. oven or arc at 2800-2900°C; carbon free tungsten;
With calcium carbide In melt
In melt in elec. oven;
iron silicon

iron silicon

wolframite MnWO4

wolframite MnWO4

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With calcium carbide In melt
In melt in elec. oven;
sodium tungstate

sodium tungstate

disodium telluride

disodium telluride

A

tellurium

tellurium

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With hydrogenchloride In water adding HCl, pptn.;
With HCl In water adding HCl, pptn.;
boron trioxide

boron trioxide

tungsten(VI) oxide

tungsten(VI) oxide

A

tungsten boride

tungsten boride

B

tungsten monoboride

tungsten monoboride

C

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In further solvent(s) Electrolysis; melt composition: NaCl (39.5 wt-%), Na3AlF6 (39.5 wt-%), WO3 (1.0 wt-%),B2O3 (20.0 wt-%), 950°C, graphite crucible (container and anode) , W- or Ni-bars as cathode, U=4.0 V, t=20 min; products sepn. by hot water and 10% H2SO4 at 50-70°C; powder XRD;
boron trioxide

boron trioxide

tungsten(VI) oxide

tungsten(VI) oxide

A

tungsten monoboride

tungsten monoboride

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In further solvent(s) Electrolysis; melt composition: NaCl (39.5 wt-%), Na3AlF6 (39.5 wt-%), WO3 (1.0 wt-%),B2O3 (20.0 wt-%), 950°C, graphite crucible (container and anode) , W- or Ni-bars as cathode, U=4.0 V, t=10 min; products sepn. by hot water and 10% H2SO4 at 50-70°C; powder XRD;
boron trioxide

boron trioxide

tungsten(VI) oxide

tungsten(VI) oxide

A

tungsten boride

tungsten boride

B

tungsten tetraboride

tungsten tetraboride

C

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In further solvent(s) Electrolysis; melt composition: NaCl (39.5 wt-%), Na3AlF6 (39.5 wt-%), WO3 (1.0 wt-%),B2O3 (20.0 wt-%), 950°C, graphite crucible (container and anode) , W- or Ni-bars as cathode, U=4.0 V, t=30 min; products sepn. by hot water and 10% H2SO4 at 50-70°C; powder XRD;
boron trioxide

boron trioxide

tungsten(VI) oxide

tungsten(VI) oxide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In further solvent(s) Electrolysis; melt composition: NaCl (39.5 wt-%), Na3AlF6 (39.5 wt-%), WO3 (1.0 wt-%),B2O3 (20.0 wt-%), 950°C, graphite crucible (container and anode) , W- or Ni-bars as cathode, U=4.0 V, t=5 min;
sodium azide

sodium azide

tungsten(VI) chloride
13283-01-7

tungsten(VI) chloride

A

tungsten nitride

tungsten nitride

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
byproducts: N2, NaCl; vac., heating in ampoule (300-400°C); cooling, washing (MeOH), drying (vac.), powder XRD, FT IR;
potassium tungstate

potassium tungstate

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In melt Electrolysis; neutral or light alk. raw material, 900-1000°C, 60-80% yield of current, light pptn. of tungsten powder or single crystal; 99.3% tungsten content, impurities: SiO2 and alk.;
With hydrogen0%
In melt Electrochem. Process; electrodeposition (LiF-KF eutectic melt, 973 K); scanning electron microscopy, electron probe anal.;
potassium tungstate

potassium tungstate

sodium tungstate

sodium tungstate

lithium tungstate

lithium tungstate

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In melt Electrolysis; neutral or light alk. raw material, 900-1000°C, 60-80% yield of current, light pptn. of tungsten powder or single crystal; 99.3% tungsten content, impurities: SiO2 and alk.;
In melt Electrolysis; m. 500°C, 6 A per cm2; product mixt. of α and β modifikation;
ammonium iodide

ammonium iodide

tungsten hexaiodide
33963-20-1

tungsten hexaiodide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In further solvent(s) Electrolysis; in furfural soln.;0%
tungsten monocarbide

tungsten monocarbide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
repeated thermic and mech. treatments; carbon free product;
heating;
repeated thermic and mech. treatments; carbon free product;
heating;
manganese oxide

manganese oxide

tungsten(VI) oxide

tungsten(VI) oxide

aluminium
7429-90-5

aluminium

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With manganese(IV) oxide violent aluminothermic react.; very pure product by dissolving other metals from tungsten manganese alloy;
thorium(IV) nitrate

thorium(IV) nitrate

ceric nitrate

ceric nitrate

tungsten(VI) oxide

tungsten(VI) oxide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
With hydrogen mixing of WO3 with soln. of additives, drying paste and redn. at 1000°C;
sodium tungstate

sodium tungstate

A

sodium polytungstate

sodium polytungstate

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In melt Electrolysis; electrolysis in NaCl electrolyte under Ar, cathode current density of 0.2 A/cm**2, anode current density of 0.04 A/cm**2, at 850-950°C; emf: 1.2-1.8 V;
sodium tungstate

sodium tungstate

lithium tungstate

lithium tungstate

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In neat (no solvent) Electrolysis; 1123 - 1173 K, U = 1.9 V;
sodium tungstate

sodium tungstate

lithium tungstate

lithium tungstate

tungsten(VI) oxide

tungsten(VI) oxide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In melt Electrolysis; on tungsten single crystal cathode at 900°C, 6 or 8 angular single crystal formation;
sodium tungstate

sodium tungstate

lithium tungstate

lithium tungstate

lithium carbonate
554-13-2

lithium carbonate

A

tungsten carbide

tungsten carbide

B

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In neat (no solvent) Electrolysis; 1 mol % of carbonate, 1123 - 1173 K, U = 1.9 V;
sodium tungstate

sodium tungstate

tungsten(VI) oxide

tungsten(VI) oxide

tungsten
7440-33-7

tungsten

Conditions
ConditionsYield
In melt Electrolysis; with lower current density, with higher current density bronze formation;
lanthanum(III) oxide

lanthanum(III) oxide

tungsten(VI) oxide

tungsten(VI) oxide

cobalt
7440-48-4

cobalt

sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

La3CoS3(6+)*WO6(6-)=La3CoWS3O6

La3CoS3(6+)*WO6(6-)=La3CoWS3O6

Conditions
ConditionsYield
In melt stoich. amts. of La2O3, S, W, WO3, Co mixed with KCl flux; sealed in carbon coated SiO2 ampoule under vac.; heated from 200 to 400°C in 24 h; held for 48 h; heated to 950°C in 12 h; held for 120 h; cooled to room temp. within 24 h; soaked in H2O overnight; washed with H2O; detn. by EDX, XRD;100%
tungsten(VI) fluoride
7783-82-6

tungsten(VI) fluoride

sodium fluoride

sodium fluoride

tungsten
7440-33-7

tungsten

sodium hexafluorotungstate(V)
55822-76-9

sodium hexafluorotungstate(V)

Conditions
ConditionsYield
In neat (no solvent) in an inert atmosphere under N2; 850°C for 30 min; before use NaFdried at 300°C overnight (vac.), recrystd. from molten state;98%
sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

tungsten thiobromide complex

tungsten thiobromide complex

Conditions
ConditionsYield
With Br2 In neat (no solvent) heating in an evacuated sealed quartz ampoule at 300°C for 48 h, stirring thoroughly and heating for another 72 h; opening, washing of the solid with CHCl3 and hot benzene and drying (vac.); elem. anal.;97%
potassium fluoride

potassium fluoride

tungsten(VI) fluoride
7783-82-6

tungsten(VI) fluoride

tungsten
7440-33-7

tungsten

A

potassium octafluorotungstate(VI)

potassium octafluorotungstate(VI)

B

potassium hexafluorotungstate(V)
34629-85-1

potassium hexafluorotungstate(V)

Conditions
ConditionsYield
In neat (no solvent) in an inert atmosphere under N2; 850°C for 30 min; before use KF dried at 300°C overnight (vac.), recrystd. from molten state; K2WF8 identified by Raman spectrum;A n/a
B 97%
rubidium fluoride

rubidium fluoride

tungsten(VI) fluoride
7783-82-6

tungsten(VI) fluoride

tungsten
7440-33-7

tungsten

rubidium hexafluorotungstate(V)
53639-97-7

rubidium hexafluorotungstate(V)

Conditions
ConditionsYield
In neat (no solvent) in an inert atmosphere under N2; 800°C for 2 h; RbF before use dried in situ at 600°C for 5 h (vac.) before addition WF6;96%
chromium
7440-47-3

chromium

nickel
7440-02-0

nickel

aluminium
7429-90-5

aluminium

tungsten
7440-33-7

tungsten

A

Ni(77.1),Cr(2.0),Al(17.9),W(3.0) (A%)

Ni(77.1),Cr(2.0),Al(17.9),W(3.0) (A%)

B

Ni(79.8),Cr(5.8),Al(12.2),W(2.2) (A%)

Ni(79.8),Cr(5.8),Al(12.2),W(2.2) (A%)

Conditions
ConditionsYield
In melt Electric Arc; ingots by arc melting of Ni(75)-Cr(2.5)-Al(20)-W(2.5) (at%), several remelts, sealed in silica tube under vac. with partial pressure of Ar, 1573K (2 weeks), furnace cooled to 1523K, 4 weeks, 1273K (6 weeks), quenched in iced water; electron microscopy, electron probe microanalysis, x-ray diffraction;A 95%
B 5%
tungsten(VI) fluoride
7783-82-6

tungsten(VI) fluoride

cesium fluoride
13400-13-0

cesium fluoride

tungsten
7440-33-7

tungsten

cesium hexafluorotungstate(V)
19175-38-3

cesium hexafluorotungstate(V)

Conditions
ConditionsYield
In neat (no solvent) in an inert atmosphere under N2; 800°C for 2 h; CsF before use dried in situ at 600°C for 5 h (vac.) before addition WF6;94%
bis(cyclopentadienyl)tungsten dichloride

bis(cyclopentadienyl)tungsten dichloride

tungsten(VI) fluoride
7783-82-6

tungsten(VI) fluoride

tungsten
7440-33-7

tungsten

2{WCl2(C5H5)2}(1+)*{W4F18}(2-)={WCl2(C5H5)2}2{W4F18}

2{WCl2(C5H5)2}(1+)*{W4F18}(2-)={WCl2(C5H5)2}2{W4F18}

Conditions
ConditionsYield
In sulfur dioxide Sonication; condensing WF6 onto a frozen mixture (10ml) of W(C5H5)Cl2 and activated W in SO2 at -196°C; warming react. mixture to room temp., stirring, 30min in an ultrasonic bath; allowing to react, 12h;; filtration; removal of sulfur dioxide; elem. anal.; IR;;94%
tungsten
7440-33-7

tungsten

tungstic acid

tungstic acid

Conditions
ConditionsYield
With CH3OH; Br2 In methanol byproducts: CH3OBr, HCOOCH3, H2O; a mixt. of Br2, MeOH and powdered W was stirred at 45-60°C for 12 h, additional Br2 may be added; further by-products; rinsed with MeOH, filtered, dried in vac.;93%
With CH3OH; Br2 In methanol byproducts: HBr, (CH3)2O, CH3Br; a mixt. of Br2, MeOH and powdered W was stirred at 45-60°C for 12 h, additional Br2 may be added; further by-products; rinsed with MeOH, filtered, dried in vac.;93%
polysilazane

polysilazane

tungsten
7440-33-7

tungsten

W(90.86),Si(6.18),C(1.55) (X%)

W(90.86),Si(6.18),C(1.55) (X%)

Conditions
ConditionsYield
In toluene ultrasoning mixing soln. of org. polymer and W (30 min); solvent removal (vac.); residue breaking; pyrolysis to 1500°C (argon stream, 5°C/min, 4 h hold); X-ray diffraction;93%
tungsten(VI) chloride
13283-01-7

tungsten(VI) chloride

tungsten
7440-33-7

tungsten

tungsten(IV) chloride
13470-13-8

tungsten(IV) chloride

Conditions
ConditionsYield
In 1,2-dichloro-ethane at 20℃; for 17h;93%
diguanidine carbonate
593-85-1

diguanidine carbonate

tungsten
7440-33-7

tungsten

guanidinium tetrafluorodioxowolframate

guanidinium tetrafluorodioxowolframate

Conditions
ConditionsYield
With 65percent HNO3; HF In hydrogen fluoride aq. HF; dissolution of W powder in 40% HF and 65% HNO3, slow addn. of (C(NH2)3)2CO3 in 40% HF under stirring; filtn., washing with water, drying in air, elem. anal.;92%
disulfur dichloride
10025-67-9

disulfur dichloride

sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

tungsten(VI) sulfide tetrachloride
25127-53-1

tungsten(VI) sulfide tetrachloride

Conditions
ConditionsYield
In neat (no solvent) heating (2E-4 Torr, 425°C, 48 h), slow cooling;89%
polysilazane

polysilazane

ammonia
7664-41-7

ammonia

tungsten
7440-33-7

tungsten

pentatungsten trisilicide

pentatungsten trisilicide

Conditions
ConditionsYield
In toluene ultrasoning mixing soln. of org. polymer and W (30 min); solvent removal (vac.); residue breaking; pyrolysis to 800°C (ammonia stream, 5°C/min, 4 h hold); further heating to 1500°C (5°C/min, argon stream); X-ray diffraction;89%
silicon
7440-21-3

silicon

tungsten
7440-33-7

tungsten

A

tungsten silicide

tungsten silicide

B

pentatungsten trisilicide

pentatungsten trisilicide

Conditions
ConditionsYield
at 1350℃; for 4h; Inert atmosphere;A 85%
B 15%
In neat (no solvent, solid phase) react. of tungsten and silicon above 1070 K;
In melt under Ar; mixt. of W and Si melted in siliconized graphite crucible at 2100°C; held no longer than 2 min with vibration stirring; detd. by X-ray microanalysis;
potassium fluoride

potassium fluoride

hydrogen fluoride
7664-39-3

hydrogen fluoride

dihydrogen peroxide
7722-84-1

dihydrogen peroxide

tungsten
7440-33-7

tungsten

2K(1+)*WO(O2)F4(2-)*H2O = K2{WO(O2)F4}*H2O

2K(1+)*WO(O2)F4(2-)*H2O = K2{WO(O2)F4}*H2O

Conditions
ConditionsYield
In water Electrolysis; electrolysis of H2O2 and HF solns. for 120 min (anode: metal rod, cathode: Pt foil), voltage 5-10 V, current 0.05 A, temp. 0-5°C, soln. remained colorless; filtered, addn. of KF in HF, pptn., filtered, washed with ethanol, dried over KOH; elem. anal.;84%
In water metal dissolved in a mixt. of HF and H2O2 solns. with stirring, temp. maintained below 10°C; filtered, addn. of KF in HF;60-70
methanol
67-56-1

methanol

tungsten
7440-33-7

tungsten

A

tungsten hexamethoxide
35869-33-1

tungsten hexamethoxide

B

tungsten oxomethoxide
19174-06-2

tungsten oxomethoxide

Conditions
ConditionsYield
With LiCl In methanol Electrochem. Process; anodic oxidation of W in MeOH in the presence of LiCl (110 V, 12 h); evapn. to dryness (vac.), extn. (hexane), drying (vac.); mixture of the 2 compds.;A 81%
B 17%
2-chloro-4-fluorotoluene
452-73-3

2-chloro-4-fluorotoluene

tungsten
7440-33-7

tungsten

2-chloro-4-fluorobenzylbromide
45767-66-6

2-chloro-4-fluorobenzylbromide

Conditions
ConditionsYield
With bromine In tetrachloromethane80%
lanthanum(III) oxide

lanthanum(III) oxide

manganese
7439-96-5

manganese

tungsten(VI) oxide

tungsten(VI) oxide

sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

La3MnS3(6+)*WO6(6-)=La3MnWS3O6

La3MnS3(6+)*WO6(6-)=La3MnWS3O6

Conditions
ConditionsYield
In melt stoich. amts. of La2O3, S, W, WO3, Mn mixed with KCl flux; sealed in carbon coated SiO2 ampoule under vac.; heated from 200 to 400°C in 24 h; held for 48 h; heated to 950°C in 12 h; held for 120 h; cooled to room temp. within 24 h; soaked in H2O overnight; washed with H2O; detn. by EDX, XRD;80%
lanthanum(III) oxide

lanthanum(III) oxide

tungsten(VI) oxide

tungsten(VI) oxide

nickel
7440-02-0

nickel

sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

La3NiS3(6+)*WO6(6-)=La3NiWS3O6

La3NiS3(6+)*WO6(6-)=La3NiWS3O6

Conditions
ConditionsYield
In melt stoich. amts. of La2O3, S, W, WO3, Ni mixed with KCl flux; sealed in carbon coated SiO2 ampoule under vac.; heated from 200 to 400°C in 24 h; held for 48 h; heated to 950°C in 12 h; held for 120 h; cooled to room temp. within 24 h; soaked in H2O overnight; washed with H2O; detn. by EDX, XRD;80%
lanthanum(III) oxide

lanthanum(III) oxide

chromium
7440-47-3

chromium

tungsten(VI) oxide

tungsten(VI) oxide

sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

La3CrS3(6+)*WO6(6-)=La3CrWS3O6

La3CrS3(6+)*WO6(6-)=La3CrWS3O6

Conditions
ConditionsYield
In melt stoich. amts. of La2O3, S, W, WO3, Cr mixed with KCl flux; sealed in carbon coated SiO2 ampoule under vac.; heated from 200 to 400°C in 24 h; held for 48 h; heated to 950°C in 12 h; held for 120 h; cooled to room temp. within 24 h; soaked in H2O overnight; washed with H2O; detn. by EDX, XRD;80%
lanthanum(III) oxide

lanthanum(III) oxide

tungsten(VI) oxide

tungsten(VI) oxide

sulfur
7704-34-9

sulfur

tungsten
7440-33-7

tungsten

La3FeS3(6+)*WO6(6-)=La3FeWS3O6

La3FeS3(6+)*WO6(6-)=La3FeWS3O6

Conditions
ConditionsYield
In melt stoich. amts. of La2O3, S, W, WO3, Fe mixed with KCl flux; sealed in carbon coated SiO2 ampoule under vac.; heated from 200 to 400°C in 24 h; held for 48 h; heated to 950°C in 12 h; held for 120 h; cooled to room temp. within 24 h; soaked in H2O overnight; washed with H2O; detn. by EDX, XRD;80%
cyclopentene
142-29-0

cyclopentene

tungsten
7440-33-7

tungsten

trimethylphosphane
594-09-2

trimethylphosphane

A

(η-cyclopentadienyl)trihydridobis(trimethylphosphine)tungsten

(η-cyclopentadienyl)trihydridobis(trimethylphosphine)tungsten

B

(W(η-C5H5)(PMe3)H5)

(W(η-C5H5)(PMe3)H5)

C

(tungsten)(triphenylphosphane)4(hydride)(P(CH3)2CH2)

(tungsten)(triphenylphosphane)4(hydride)(P(CH3)2CH2)

D

W(C5H5)(C5H8)(P(CH3)3)2H

W(C5H5)(C5H8)(P(CH3)3)2H

Conditions
ConditionsYield
-196°C; not isolated, detected by NMR;A 10%
B <1
C 20%
D 70%
bromine
7726-95-6

bromine

tungsten
7440-33-7

tungsten

Br12W6

Br12W6

Conditions
ConditionsYield
In neat (no solvent) byproducts: WBr4, WO2Br2; W powder and Br2 in evacuated and sealed ampule cooled to liq. N2; I endof ampole heated to 750°C, II - to 40°C; WBr5 formed; the n ampole heated at gradient of 750-540°C for 40 h, cooled to roomtemp.; purified by sublimation at 540°C in dynamic vac.; detd. by powderXRD;67%
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