As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
Cas:7782-99-2
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquirySulfurous Acid Basic information Product Name: Sulfurous Acid Synonyms: schwefligesaure;sulfurdioxidesolution;Sulfurous anhydride solution;Sulfurous acid, 6.0% SO;Sulfurous acid, for analysis;yaliusuan;Sulfonic Acid 90%;SULFUROUS
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
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
Cas:7782-99-2
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiryhigh 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
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Product Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard
Cas:7782-99-2
Min.Order:1 Kilogram
FOB Price: $112.0
Type:Trading Company
inquiryGood quantity Storage:R.T. Package:as per buyers Application:intermediate Transportation:by air/sea
Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
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 or
Sulfurous Acid /High quality/Best price/In stock Application:Sulfurous Acid /High quality/Best price/In stock
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Type:Other
inquiryWe are committed to providing our customers with the best products and services at the most competitive prices.Appearance:yellow to light brown crystals Storage:Room temperature with sealed well Package:according to the clients requirement Applicatio
Sulfurous Acid /High quality/Best price/In stockAppearance:crystal Storage:Keep in a cool & dry place Package:Neutral Application:intermediate Transportation:By express (Door to door) such as FEDEX, DHL, EMS for small amount. By air(airport to airpor
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Type:Lab/Research institutions
inquiryin stock Application:7782-99-2
Cas:7782-99-2
Min.Order:0
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Type:Trading Company
inquirySULFUROUS ACID Basic information Product Name: SULFUROUS ACID Synonyms: schwefligesaure;sulfurdioxidesolution;sulfurous;SULPHUROUS ACID;SULPHUR DIOXIDE;SULFUROUS ANHYDRIDE;SULFUROUS ACID;Sulfur dioxcide s
1.High quality and competetive price 1)We can offer COA Certificate and official Invoice. 2)We are manufacturer with own lab and factory, can provide high quality products with factory price. 3)Products purity is test by our quality department
Cas:7782-99-2
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Trading Company
inquiryProfile Hebei Ruishun Trade Co.LTD, registered capital of $1 million ,have a production of pharmaceutical raw materials, pharmaceutical raw materials factory reagent r&d center,Seek development by credit reputation. Our products have a large
HuBei ipure is a diversified product production and operation enterprise, with API, pharma intermediates, and other fine chemicals as well as R&D and pigments development and sales as one of the large enterprises, with more than 130 acres of pl
At Share Chemical Company, we scrupulously abide by our policy of “Excellent Quality at a Reasonable Price”. We strive to satisfy all of our customers by providing the finest quality products supported by the finest in customer servi
Best quality & Attractive price & Professional service; Trial & Pilot & CommercialHenan Fine Chemicals Co., LTD. is a diversified technology - oriented integrated company, which mainly concentrates on fine chemicals. Our company is committed to becom
United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat
Sulfurous acid Storage:keep in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/pharma intermediate Transportation:By Sea,by Air,By courier like DHL or Fedx. Port:Shanghai/Shenzhen
Sulfurous Acid /High quality/Best price/In stock Application:intermediate
Adequate stocks available,prompt shipment,Strictly control on quality,Timely after-sales Application:API
Cas:7782-99-2
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Type:Lab/Research institutions
inquirySulfurous Acid /High quality/Best price/In stock Application:Sulfurous Acid /High quality/Best price/In stock
Cas:7782-99-2
Min.Order:0
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Type:Trading Company
inquirySulfurous acid 90% Top Drugs Supplier Safe shipping High QualityAppearance:Standardized Look(Large crystal, Powder, Solid, Liquid) Storage:Room temperature Sealed storage Package:10G(ML);100G(ML);1KG(L);25KG(L) Application:An important raw material a
Cas:7782-99-2
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inquiryhigh purity Application:Drug intermediates Materials intermediates and active molecules
rongalite
A
trithioformaldehyde
B
sulfur dioxide
C
Sulfate
D
sulphurous acid
E
sulfur
Conditions | Yield |
---|---|
With hydrogenchloride In not given byproducts: H2O, polythionic acids; digesting with HCl-soln.; | A n/a B 82% C 0% D n/a E 82% |
With HCl In not given byproducts: H2O, polythionic acids; digesting with HCl-soln.; | A n/a B 82% C 0% D n/a E 82% |
hydrogenchloride
A
6-aminoquinoline
B
Glyoxal
C
sulphurous acid
Conditions | Yield |
---|---|
at 90℃; Kochen der erhaltenen Natriumsalz mit Alkalien und folgenden Ansaeuern; |
4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one
A
sulphurous acid
sulfuric acid
N,N-diphenylthiourea
A
carbonic-acid
B
sulphurous acid
C
4-aminobenzene sulfonic acid
benzenesulfonic acid
A
diphenyl sulphone
B
sulfuric acid
C
sulphurous acid
D
benzene
Conditions | Yield |
---|---|
Destillation unter gewoehnlichem Druck; |
Conditions | Yield |
---|---|
at 160 - 180℃; |
Conditions | Yield |
---|---|
at 140 - 155℃; |
thiourea
A
sulphurous acid
ethanol
benzenesulfonyl chloride
A
dibenzyl sulfone
B
benzylsulfinic acid
C
sulphurous acid
D
benzaldehyde
Conditions | Yield |
---|---|
at 170℃; |
Conditions | Yield |
---|---|
bei der Destillation; |
thiocarboxamide
sulfuric acid
A
hydrogen sulfide
B
sulphurous acid
2-hydroxy-2-sulfo-propionic acid
A
sulphurous acid
B
2-oxo-propionic acid
Conditions | Yield |
---|---|
Equilibrium constant; wss.-aethanol. Loesung vom pH 3,3 bei 20grad; |
acetone oxime
A
sulfuric acid
B
ammonia
C
sulphurous acid
D
acetone
thiocyanic acid
A
hydrogen cyanide
B
sulfuric acid
C
sulphurous acid
Conditions | Yield |
---|---|
Electrolysis; |
ethyl-amidosulfurous acid
water
A
sulfuric acid
B
sulphurous acid
C
ethylamine
Conditions | Yield |
---|---|
weitere Produkte: Trithionsaeure, Pentathionsaeure; |
hydrogenchloride
O,O-dimethyl thiosulfite
A
hydrogen sulfide
B
sulphurous acid
hydrogenchloride
2-amino-5-dimethylaminophenylthiosulphonic acid
A
sulfuric acid
B
sulphurous acid
2-amino-5-dimethylaminophenylthiosulphonic acid
A
sulfuric acid
B
sulphurous acid
Dibenzyl sulfoxide
A
dibenzyl disulphide
B
sulphurous acid
C
benzaldehyde
D
toluene
Conditions | Yield |
---|---|
at 210℃; |
ethyleneglycol dibenzenesulfonate
A
sulphurous acid
B
acetaldehyde
C
benzenesulfonic acid
D
acetylene
Conditions | Yield |
---|---|
at 315℃; man halt dann die Temperatur bei 270grad; |
hydrogenchloride
p-phenetidino-methanesulfonic acid
A
formaldehyd
B
sulphurous acid
C
4-Ethoxyaniline
Conditions | Yield |
---|---|
teils Spaltung; |
Conditions | Yield |
---|---|
In water pure SO2 is introduced into alkaline Na2S soln.; | A n/a B 100% |
sulphurous acid
chloric acid
A
sulfuric acid
B
chlorine dioxide
C
water
Conditions | Yield |
---|---|
With air; sulfur dioxide In sulfuric acid byproducts: HClO, HCl, Cl2; Holst-process;; | A n/a B 90% C n/a |
Conditions | Yield |
---|---|
In water pure SO2 is introduced into concd. Na2S soln. at 60°C;; | A n/a B n/a C 80% |
In water at 20°C, aq. SO2 soln., diluted Na2S soln.; |
Conditions | Yield |
---|---|
In water in slightly acidic soln. (litmus); cyclic process;; | A n/a B n/a C 75% |
Conditions | Yield |
---|---|
In water VCl4 was added dropwise to ice-cold water, NH4OH and H2SO3 were added and heated in Teflon liner at 200°C for 3 d and cooled at 0.1°C/min to room temp.; product was washed with water and dried in air; elem. anal.; | 47% |
Conditions | Yield |
---|---|
In water a mixt. of 7% SO2 and 93% N2 is introduced into concd. Na2S soln. at 60°C;; | A n/a B n/a C 46% D n/a |
sulphurous acid
sodium hydroxide
A
hydrogen sulfide
B
water
D
sodium sulfite
Conditions | Yield |
---|---|
In water 7 % SO2; | A n/a B n/a C 37.5% D n/a |
Conditions | Yield |
---|---|
In water VCl4 was added dropwise to ice-cold water, H2SO3, and RbOH were added and heated in Teflon liner at 205°C for 4 d and cooled at 0.1°C/min to room temp.; crystals were filtered, washed with water and dried in air; elem. anal.; | 34% |
rongalite
A
trithioformaldehyde
B
sulfur dioxide
C
Sulfate
D
sulphurous acid
E
sulfur
Conditions | Yield |
---|---|
With hydrogenchloride In not given byproducts: H2O, polythionic acids; digesting with HCl-soln.; | A n/a B 82% C 0% D n/a E 82% |
With HCl In not given byproducts: H2O, polythionic acids; digesting with HCl-soln.; | A n/a B 82% C 0% D n/a E 82% |
hydrogenchloride
A
6-aminoquinoline
B
Glyoxal
C
sulphurous acid
Conditions | Yield |
---|---|
at 90℃; Kochen der erhaltenen Natriumsalz mit Alkalien und folgenden Ansaeuern; |
4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one
A
sulphurous acid
sulfuric acid
N,N-diphenylthiourea
A
carbonic-acid
B
sulphurous acid
C
4-aminobenzene sulfonic acid
benzenesulfonic acid
A
diphenyl sulphone
B
sulfuric acid
C
sulphurous acid
D
benzene
Conditions | Yield |
---|---|
Destillation unter gewoehnlichem Druck; |
Conditions | Yield |
---|---|
at 160 - 180℃; |
Conditions | Yield |
---|---|
at 140 - 155℃; |
thiourea
A
sulphurous acid
ethanol
benzenesulfonyl chloride
A
dibenzyl sulfone
B
benzylsulfinic acid
C
sulphurous acid
D
benzaldehyde
Conditions | Yield |
---|---|
at 170℃; |
Conditions | Yield |
---|---|
bei der Destillation; |
thiocarboxamide
sulfuric acid
A
hydrogen sulfide
B
sulphurous acid
2-hydroxy-2-sulfo-propionic acid
A
sulphurous acid
B
2-oxo-propionic acid
Conditions | Yield |
---|---|
Equilibrium constant; wss.-aethanol. Loesung vom pH 3,3 bei 20grad; |
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