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Dayang Chem (Hangzhou) Co.,Ltd.

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

Sulfurous acid

Cas:7782-99-2

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Ality Chemical Corporation

Sulfurous 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

Factory Supply Sulfurous acid

Cas:7782-99-2

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

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

Sulfurous acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

Sulfurous acid

Cas:7782-99-2

Min.Order:10 Gram

FOB Price: $100.0

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

Sulfurous acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Other

inquiry

GIHI CHEMICALS CO.,LIMITED

high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier

Sulfurous Acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

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

SULFUROUS ACID

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Zhuozhou Wenxi import and Export Co., Ltd

Product Description Description & Specification Category Pharmaceutical Raw Materials, Fine Chemicals, Bulk drug Standard Medical standard

factory directly supply CAS 7782-99-2 with competitive price

Cas:7782-99-2

Min.Order:1 Kilogram

FOB Price: $112.0

Type:Trading Company

inquiry

Henan Tianfu Chemical Co., Ltd.

Good quantity Storage:R.T. Package:as per buyers Application:intermediate Transportation:by air/sea

SULFUROUS ACID

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Antimex Chemical Limied

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

Sulfurous acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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 or

Sulfurous Acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hubei Langyou International Trading Co., Ltd

Sulfurous Acid /High quality/Best price/In stock Application:Sulfurous Acid /High quality/Best price/In stock

Sulfurous Acid /High quality/Best price/In stock

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Other

inquiry

BOC Sciences

We 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

Sulfurousacid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hunan Longxianng Runhui Trading Co.,Ltd

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

Sulfurous Acid /High quality/Best price/In stock

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Beantown Chemical

in stock Application:7782-99-2

Sulfurous acid, SO2 6.0% min., ACS

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

HENAN SUNLAKE ENTERPRISE CORPORATION

SULFUROUS ACID Basic information Product Name: SULFUROUS ACID Synonyms: schwefligesaure;sulfurdioxidesolution;sulfurous;SULPHUROUS ACID;SULPHUR DIOXIDE;SULFUROUS ANHYDRIDE;SULFUROUS ACID;Sulfur dioxcide s

SULFUROUS ACID

Cas:7782-99-2

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

HeBei Oriental Industry Co., Ltd

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

SULFUROUS ACID 7782-99-2

Cas:7782-99-2

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

inquiry

Hebei Ruishun Trade Co.,Ltd

Profile 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

Sulfurous acid

Cas:7782-99-2

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

HuBei Ipure Biotech CO.,ltd

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

Sulfurous acid

Cas:7782-99-2

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Trading Company

inquiry

Hangzhou Share Chemical Co., Ltd

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

Sulfurous acid, ACS, 6.0% SO{2

Cas:7782-99-2

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

Henan Fine Chemicals Co., Ltd

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

Sulfurous acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Shanghai united Scientific Co.,Ltd.

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

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Nanjing Raymon Biotech Co., Ltd.

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

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hebei Minshang Biotechnology Co., Ltd

Sulfurous Acid /High quality/Best price/In stock Application:intermediate

7782-99-2

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Skyrun Industrial Co.,Ltd

Adequate stocks available,prompt shipment,Strictly control on quality,Timely after-sales Application:API

Sulfurous acid, ACS, 6.0% SO{2} Min

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Fenjun Chemical Co Ltd.

Sulfurous Acid /High quality/Best price/In stock Application:Sulfurous Acid /High quality/Best price/In stock

Sulfurous Acid /High quality/Best price/In stock

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Chemical Co.Ltd

Sulfurous 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

Sulfurous acid 90% Top Drugs Supplier Safe shipping High Quality

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

NovaChemistry

high purity Application:Drug intermediates Materials intermediates and active molecules

sulfurous acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Suzhou Vosun Chemical Co., Ltd.

Sulfurous acid

Cas:7782-99-2

Min.Order:0

Negotiable

Type:

inquiry

Synthetic route

rongalite
149-44-0

rongalite

A

trithioformaldehyde
36069-03-1

trithioformaldehyde

B

sulfur dioxide
7446-09-5

sulfur dioxide

C

Sulfate
14808-79-8

Sulfate

D

sulphurous acid
7782-99-2

sulphurous acid

E

sulfur
7704-34-9

sulfur

Conditions
ConditionsYield
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%
7,11b-dihydro-benzo[c]carbazole-1,6a-disulfonic acid

7,11b-dihydro-benzo[c]carbazole-1,6a-disulfonic acid

acid

acid

A

benzo[c]carbazole
205-25-4

benzo[c]carbazole

B

sulphurous acid
7782-99-2

sulphurous acid

hydrogenchloride
7647-01-0

hydrogenchloride

1,2-bis-[6]quinolylamino-ethane-1,2-disulfonic acid

1,2-bis-[6]quinolylamino-ethane-1,2-disulfonic acid

A

6-aminoquinoline
580-15-4

6-aminoquinoline

B

Glyoxal
131543-46-9

Glyoxal

C

sulphurous acid
7782-99-2

sulphurous acid

hydrogenchloride
7647-01-0

hydrogenchloride

7-methoxy-1-methyl-β-carboline-9-sulfonic acid

7-methoxy-1-methyl-β-carboline-9-sulfonic acid

A

harmine
442-51-3

harmine

B

sulphurous acid
7782-99-2

sulphurous acid

4-methyl-quinoline-2-sulfonic acid
103264-22-8

4-methyl-quinoline-2-sulfonic acid

water
7732-18-5

water

A

sulphurous acid
7782-99-2

sulphurous acid

B

2-oxy-4-methyl-quinoline

2-oxy-4-methyl-quinoline

2,5-dichloro-indol-3-one

2,5-dichloro-indol-3-one

water
7732-18-5

water

sodium sulfite

sodium sulfite

A

5-chloroindole 2,3-dione
17630-76-1

5-chloroindole 2,3-dione

B

sulphurous acid
7782-99-2

sulphurous acid

Conditions
ConditionsYield
at 90℃; Kochen der erhaltenen Natriumsalz mit Alkalien und folgenden Ansaeuern;
furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one
60172-88-5

4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one

A

sulphurous acid
7782-99-2

sulphurous acid

B

sodium salt of 4-phenyl-3-mercapto-1.2.4-triazolone-(5)

sodium salt of 4-phenyl-3-mercapto-1.2.4-triazolone-(5)

sulfuric acid
7664-93-9

sulfuric acid

N,N-diphenylthiourea
102-08-9

N,N-diphenylthiourea

A

carbonic-acid
463-79-6

carbonic-acid

B

sulphurous acid
7782-99-2

sulphurous acid

C

4-aminobenzene sulfonic acid
121-57-3

4-aminobenzene sulfonic acid

benzenesulfonic acid
98-11-3

benzenesulfonic acid

A

diphenyl sulphone
127-63-9

diphenyl sulphone

B

sulfuric acid
7664-93-9

sulfuric acid

C

sulphurous acid
7782-99-2

sulphurous acid

D

benzene
71-43-2

benzene

Conditions
ConditionsYield
Destillation unter gewoehnlichem Druck;
sulfuric acid
7664-93-9

sulfuric acid

1-hexadecylcarboxylic acid
57-10-3

1-hexadecylcarboxylic acid

A

sulphurous acid
7782-99-2

sulphurous acid

B

carbon monoxide

carbon monoxide

Conditions
ConditionsYield
at 160 - 180℃;
sulfuric acid
7664-93-9

sulfuric acid

isobutyric Acid
79-31-2

isobutyric Acid

A

sulphurous acid
7782-99-2

sulphurous acid

B

carbon monoxide

carbon monoxide

Conditions
ConditionsYield
at 140 - 155℃;
thiourea
17356-08-0

thiourea

alkaline alkali hypochlorite

alkaline alkali hypochlorite

A

sulphurous acid
7782-99-2

sulphurous acid

B

nitrogen

nitrogen

ethanol
64-17-5

ethanol

benzenesulfonyl chloride
1939-99-7

benzenesulfonyl chloride

zinc

zinc

A

dibenzyl sulfone
620-32-6

dibenzyl sulfone

B

benzylsulfinic acid
4403-73-0

benzylsulfinic acid

C

sulphurous acid
7782-99-2

sulphurous acid

D

benzaldehyde
100-52-7

benzaldehyde

4-Methylpentanoic acid
646-07-1

4-Methylpentanoic acid

sulfuric acid
7664-93-9

sulfuric acid

sulphurous acid
7782-99-2

sulphurous acid

Conditions
ConditionsYield
at 170℃;
sulfonal
115-24-2

sulfonal

zinc

zinc

hydrogen

hydrogen

sulphurous acid
7782-99-2

sulphurous acid

Conditions
ConditionsYield
bei der Destillation;
1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

diluted natrium carbonate

diluted natrium carbonate

A

N'-carbamimidoyl-triazene-N-carboxylic acid amide

N'-carbamimidoyl-triazene-N-carboxylic acid amide

B

sulphurous acid
7782-99-2

sulphurous acid

1-ethoxycarbonyl-3-carbamimidoyl-triazane-2-sulfonic acid

1-ethoxycarbonyl-3-carbamimidoyl-triazane-2-sulfonic acid

diluted NaOH-solution

diluted NaOH-solution

A

N'-carbamimidoyl-triazene-N-carboxylic acid ethyl ester

N'-carbamimidoyl-triazene-N-carboxylic acid ethyl ester

B

sulphurous acid
7782-99-2

sulphurous acid

thiocarboxamide
115-08-2

thiocarboxamide

sulfuric acid
7664-93-9

sulfuric acid

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

sulphurous acid
7782-99-2

sulphurous acid

thionylacetate

thionylacetate

water
7732-18-5

water

A

sulphurous acid
7782-99-2

sulphurous acid

B

acetic acid
64-19-7

acetic acid

2-hydroxy-2-sulfo-propionic acid
40757-83-3

2-hydroxy-2-sulfo-propionic acid

A

sulphurous acid
7782-99-2

sulphurous acid

B

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

Conditions
ConditionsYield
Equilibrium constant; wss.-aethanol. Loesung vom pH 3,3 bei 20grad;
sodium hydrogensulfite

sodium hydrogensulfite

acetone oxime
127-06-0

acetone oxime

diluted acid

diluted acid

A

sulfuric acid
7664-93-9

sulfuric acid

B

ammonia
7664-41-7

ammonia

C

sulphurous acid
7782-99-2

sulphurous acid

D

acetone
67-64-1

acetone

1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

diluted NaOH-solution

diluted NaOH-solution

A

sulphurous acid
7782-99-2

sulphurous acid

B

nitrogen

nitrogen

thiocyanic acid
463-56-9

thiocyanic acid

A

hydrogen cyanide
74-90-8

hydrogen cyanide

B

sulfuric acid
7664-93-9

sulfuric acid

C

sulphurous acid
7782-99-2

sulphurous acid

D

sulfur

sulfur

Conditions
ConditionsYield
Electrolysis;
ethyl-amidosulfurous acid
100850-89-3

ethyl-amidosulfurous acid

water
7732-18-5

water

A

sulfuric acid
7664-93-9

sulfuric acid

B

sulphurous acid
7782-99-2

sulphurous acid

C

ethylamine
75-04-7

ethylamine

D

thiosulfuric acid

thiosulfuric acid

Conditions
ConditionsYield
weitere Produkte: Trithionsaeure, Pentathionsaeure;
hydrogenchloride
7647-01-0

hydrogenchloride

O,O-dimethyl thiosulfite
3566-73-2

O,O-dimethyl thiosulfite

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

sulphurous acid
7782-99-2

sulphurous acid

C

sulfur

sulfur

D

thiosulfuric acid

thiosulfuric acid

hydrogenchloride
7647-01-0

hydrogenchloride

2-amino-5-dimethylaminophenylthiosulphonic acid
43035-11-6

2-amino-5-dimethylaminophenylthiosulphonic acid

A

sulfuric acid
7664-93-9

sulfuric acid

B

sulphurous acid
7782-99-2

sulphurous acid

C

2.2'-diamino-5.5'-bis-dimethylamino-diphenyl sulfide

2.2'-diamino-5.5'-bis-dimethylamino-diphenyl sulfide

2-amino-5-dimethylaminophenylthiosulphonic acid
43035-11-6

2-amino-5-dimethylaminophenylthiosulphonic acid

alkali

alkali

A

sulfuric acid
7664-93-9

sulfuric acid

B

sulphurous acid
7782-99-2

sulphurous acid

C

2.2'-diamino-5.5'-bis-dimethylamino-diphenyl sulfide

2.2'-diamino-5.5'-bis-dimethylamino-diphenyl sulfide

Dibenzyl sulfoxide
621-08-9

Dibenzyl sulfoxide

A

dibenzyl disulphide
150-60-7

dibenzyl disulphide

B

sulphurous acid
7782-99-2

sulphurous acid

C

benzaldehyde
100-52-7

benzaldehyde

D

toluene
108-88-3

toluene

Conditions
ConditionsYield
at 210℃;
ethyleneglycol dibenzenesulfonate
116-50-7

ethyleneglycol dibenzenesulfonate

A

sulphurous acid
7782-99-2

sulphurous acid

B

acetaldehyde
75-07-0

acetaldehyde

C

benzenesulfonic acid
98-11-3

benzenesulfonic acid

D

acetylene
74-86-2

acetylene

Conditions
ConditionsYield
at 315℃; man halt dann die Temperatur bei 270grad;
hydrogenchloride
7647-01-0

hydrogenchloride

p-phenetidino-methanesulfonic acid
787485-97-6

p-phenetidino-methanesulfonic acid

A

formaldehyd
50-00-0

formaldehyd

B

sulphurous acid
7782-99-2

sulphurous acid

C

4-Ethoxyaniline
156-43-4

4-Ethoxyaniline

Conditions
ConditionsYield
teils Spaltung;
sodium sulfide

sodium sulfide

sulphurous acid
7782-99-2

sulphurous acid

sodium hydroxide
1310-73-2

sodium hydroxide

A

water
7732-18-5

water

B

sodium thiosulfate

sodium thiosulfate

Conditions
ConditionsYield
In water pure SO2 is introduced into alkaline Na2S soln.;A n/a
B 100%
sulphurous acid
7782-99-2

sulphurous acid

chloric acid
7790-93-4

chloric acid

A

sulfuric acid
7664-93-9

sulfuric acid

B

chlorine dioxide
10049-04-4, 25052-55-5

chlorine dioxide

C

water
7732-18-5

water

Conditions
ConditionsYield
With air; sulfur dioxide In sulfuric acid byproducts: HClO, HCl, Cl2; Holst-process;;A n/a
B 90%
C n/a
sodium sulfide

sodium sulfide

sulphurous acid
7782-99-2

sulphurous acid

A

water
7732-18-5

water

B

sulfur
7704-34-9

sulfur

C

sodium thiosulfate

sodium thiosulfate

Conditions
ConditionsYield
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.;
sodium sulfide

sodium sulfide

sulphurous acid
7782-99-2

sulphurous acid

A

sodium hydrogen sulfide

sodium hydrogen sulfide

B

water
7732-18-5

water

C

sodium thiosulfate

sodium thiosulfate

Conditions
ConditionsYield
In water in slightly acidic soln. (litmus); cyclic process;;A n/a
B n/a
C 75%
ammonium hydroxide

ammonium hydroxide

vanadiumtetrachloride
7632-51-1

vanadiumtetrachloride

sulphurous acid
7782-99-2

sulphurous acid

NH4(1+)*3V(3+)*6OH(1-)*2SO4(2-)=NH4V3(OH)6(SO4)2

NH4(1+)*3V(3+)*6OH(1-)*2SO4(2-)=NH4V3(OH)6(SO4)2

Conditions
ConditionsYield
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%
sodium sulfide

sodium sulfide

sulphurous acid
7782-99-2

sulphurous acid

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

water
7732-18-5

water

C

sodium thiosulfate

sodium thiosulfate

D

sodium sulfite
7757-83-7

sodium sulfite

Conditions
ConditionsYield
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
sodium sulfide

sodium sulfide

sulphurous acid
7782-99-2

sulphurous acid

sodium hydroxide
1310-73-2

sodium hydroxide

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

water
7732-18-5

water

C

sodium thiosulfate

sodium thiosulfate

D

sodium sulfite
7757-83-7

sodium sulfite

Conditions
ConditionsYield
In water 7 % SO2;A n/a
B n/a
C 37.5%
D n/a
rubidium hydroxide

rubidium hydroxide

vanadiumtetrachloride
7632-51-1

vanadiumtetrachloride

sulphurous acid
7782-99-2

sulphurous acid

RbV3(OH)6(SO4)2

RbV3(OH)6(SO4)2

Conditions
ConditionsYield
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
149-44-0

rongalite

A

trithioformaldehyde
36069-03-1

trithioformaldehyde

B

sulfur dioxide
7446-09-5

sulfur dioxide

C

Sulfate
14808-79-8

Sulfate

D

sulphurous acid
7782-99-2

sulphurous acid

E

sulfur
7704-34-9

sulfur

Conditions
ConditionsYield
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%
7,11b-dihydro-benzo[c]carbazole-1,6a-disulfonic acid

7,11b-dihydro-benzo[c]carbazole-1,6a-disulfonic acid

acid

acid

A

benzo[c]carbazole
205-25-4

benzo[c]carbazole

B

sulphurous acid
7782-99-2

sulphurous acid

hydrogenchloride
7647-01-0

hydrogenchloride

1,2-bis-[6]quinolylamino-ethane-1,2-disulfonic acid

1,2-bis-[6]quinolylamino-ethane-1,2-disulfonic acid

A

6-aminoquinoline
580-15-4

6-aminoquinoline

B

Glyoxal
131543-46-9

Glyoxal

C

sulphurous acid
7782-99-2

sulphurous acid

hydrogenchloride
7647-01-0

hydrogenchloride

7-methoxy-1-methyl-β-carboline-9-sulfonic acid

7-methoxy-1-methyl-β-carboline-9-sulfonic acid

A

harmine
442-51-3

harmine

B

sulphurous acid
7782-99-2

sulphurous acid

4-methyl-quinoline-2-sulfonic acid
103264-22-8

4-methyl-quinoline-2-sulfonic acid

water
7732-18-5

water

A

sulphurous acid
7782-99-2

sulphurous acid

B

2-oxy-4-methyl-quinoline

2-oxy-4-methyl-quinoline

2,5-dichloro-indol-3-one

2,5-dichloro-indol-3-one

water
7732-18-5

water

sodium sulfite

sodium sulfite

A

5-chloroindole 2,3-dione
17630-76-1

5-chloroindole 2,3-dione

B

sulphurous acid
7782-99-2

sulphurous acid

Conditions
ConditionsYield
at 90℃; Kochen der erhaltenen Natriumsalz mit Alkalien und folgenden Ansaeuern;
furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one
60172-88-5

4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one

A

sulphurous acid
7782-99-2

sulphurous acid

B

sodium salt of 4-phenyl-3-mercapto-1.2.4-triazolone-(5)

sodium salt of 4-phenyl-3-mercapto-1.2.4-triazolone-(5)

sulfuric acid
7664-93-9

sulfuric acid

N,N-diphenylthiourea
102-08-9

N,N-diphenylthiourea

A

carbonic-acid
463-79-6

carbonic-acid

B

sulphurous acid
7782-99-2

sulphurous acid

C

4-aminobenzene sulfonic acid
121-57-3

4-aminobenzene sulfonic acid

benzenesulfonic acid
98-11-3

benzenesulfonic acid

A

diphenyl sulphone
127-63-9

diphenyl sulphone

B

sulfuric acid
7664-93-9

sulfuric acid

C

sulphurous acid
7782-99-2

sulphurous acid

D

benzene
71-43-2

benzene

Conditions
ConditionsYield
Destillation unter gewoehnlichem Druck;
sulfuric acid
7664-93-9

sulfuric acid

1-hexadecylcarboxylic acid
57-10-3

1-hexadecylcarboxylic acid

A

sulphurous acid
7782-99-2

sulphurous acid

B

carbon monoxide

carbon monoxide

Conditions
ConditionsYield
at 160 - 180℃;
sulfuric acid
7664-93-9

sulfuric acid

isobutyric Acid
79-31-2

isobutyric Acid

A

sulphurous acid
7782-99-2

sulphurous acid

B

carbon monoxide

carbon monoxide

Conditions
ConditionsYield
at 140 - 155℃;
thiourea
17356-08-0

thiourea

alkaline alkali hypochlorite

alkaline alkali hypochlorite

A

sulphurous acid
7782-99-2

sulphurous acid

B

nitrogen

nitrogen

ethanol
64-17-5

ethanol

benzenesulfonyl chloride
1939-99-7

benzenesulfonyl chloride

zinc

zinc

A

dibenzyl sulfone
620-32-6

dibenzyl sulfone

B

benzylsulfinic acid
4403-73-0

benzylsulfinic acid

C

sulphurous acid
7782-99-2

sulphurous acid

D

benzaldehyde
100-52-7

benzaldehyde

4-Methylpentanoic acid
646-07-1

4-Methylpentanoic acid

sulfuric acid
7664-93-9

sulfuric acid

sulphurous acid
7782-99-2

sulphurous acid

Conditions
ConditionsYield
at 170℃;
sulfonal
115-24-2

sulfonal

zinc

zinc

hydrogen

hydrogen

sulphurous acid
7782-99-2

sulphurous acid

Conditions
ConditionsYield
bei der Destillation;
1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

diluted natrium carbonate

diluted natrium carbonate

A

N'-carbamimidoyl-triazene-N-carboxylic acid amide

N'-carbamimidoyl-triazene-N-carboxylic acid amide

B

sulphurous acid
7782-99-2

sulphurous acid

1-ethoxycarbonyl-3-carbamimidoyl-triazane-2-sulfonic acid

1-ethoxycarbonyl-3-carbamimidoyl-triazane-2-sulfonic acid

diluted NaOH-solution

diluted NaOH-solution

A

N'-carbamimidoyl-triazene-N-carboxylic acid ethyl ester

N'-carbamimidoyl-triazene-N-carboxylic acid ethyl ester

B

sulphurous acid
7782-99-2

sulphurous acid

thiocarboxamide
115-08-2

thiocarboxamide

sulfuric acid
7664-93-9

sulfuric acid

A

hydrogen sulfide
7783-06-4

hydrogen sulfide

B

sulphurous acid
7782-99-2

sulphurous acid

thionylacetate

thionylacetate

water
7732-18-5

water

A

sulphurous acid
7782-99-2

sulphurous acid

B

acetic acid
64-19-7

acetic acid

2-hydroxy-2-sulfo-propionic acid
40757-83-3

2-hydroxy-2-sulfo-propionic acid

A

sulphurous acid
7782-99-2

sulphurous acid

B

2-oxo-propionic acid
127-17-3

2-oxo-propionic acid

Conditions
ConditionsYield
Equilibrium constant; wss.-aethanol. Loesung vom pH 3,3 bei 20grad;
sodium hydrogensulfite

sodium hydrogensulfite

acetone oxime
127-06-0

acetone oxime

diluted acid

diluted acid

A

sulfuric acid
7664-93-9

sulfuric acid

B

ammonia
7664-41-7

ammonia

C

sulphurous acid
7782-99-2

sulphurous acid

D

acetone
67-64-1

acetone

1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

1-carbamimidoyl-3-carbamoyl-triazane-2-sulfonic acid

diluted NaOH-solution

diluted NaOH-solution

A

sulphurous acid
7782-99-2

sulphurous acid

B

nitrogen

nitrogen

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