Products Categories
| CAS No.: | 7782-99-2 |
|---|---|
| Name: | Sulfurous acid |
| Molecular Structure: | |
|
|
|
| Formula: | H2O3S |
| Molecular Weight: | 82.0801 |
| Synonyms: | Schweflige saure;Schweflige saure [German];Sulfur dioxide solution;UNII-J1P7893F4J; |
| EINECS: | 231-973-1 |
| Density: | 2.483 g/cm3 |
| Solubility: | soluble in water |
| Appearance: | clear, colorless liquid |
| Hazard Symbols: |
 C
|
| Risk Codes: | 20-34 |
| Safety: | 26-36/37/39-45 |
| Transport Information: | UN 1833 8/PG 2 |
| PSA: | 76.74000 |
| LogP: | 0.54680 |
- 81281-59-67-Benzylideneaminotheophylline
- 82993-81-5D-threo-Ritalinic acid hydrochloride
- 852475-26-4MC1568
- 958254-66-51H-Imidazo[4,5-b]pyridine-2-carboxaldehyde, 1-methyl-, hydrochloride
- 99170-93-1N-Methyl-2-oxazolamine
- 914458-26-7[5-(2-fluorophenyl)-1-pentyl-1H-pyrrol-3-yl]-1-naphthalenyl-Methanone
- 894852-01-87-BROMO-2,2-DIMETHYL-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE
- 90221-55-92-bromo-5-methylbenzaldehyde
- 885590-99-82,3-DIFLUORO-4-IODOBENZALDEHYDE
- 97730-31-9(S)-4'-(2-Methylbutyl)Biphenyl-4-Carbonitrile
- 149-44-0
rongalite
A
- 36069-03-1
trithioformaldehyde
B
- 7446-09-5
sulfur dioxide
C
- 14808-79-8
Sulfate
D
- 7782-99-2
sulphurous acid
E
- 7704-34-9
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% |
| Conditions | Yield |
|---|---|
| at 90℃; Kochen der erhaltenen Natriumsalz mit Alkalien und folgenden Ansaeuern; |
- 60172-88-5
4,4'-diphenyl-2,4,2',4'-tetrahydro-5,5'-disulfanediyl-bis-[1,2,4]triazol-3-one
A
- 7782-99-2
sulphurous acid
- 7664-93-9
sulfuric acid
- 102-08-9
N,N-diphenylthiourea
A
- 463-79-6
carbonic-acid
B
- 7782-99-2
sulphurous acid
C
- 121-57-3
4-aminobenzene sulfonic acid
- 98-11-3
benzenesulfonic acid
A
- 127-63-9
diphenyl sulphone
B
- 7664-93-9
sulfuric acid
C
- 7782-99-2
sulphurous acid
D
- 71-43-2
benzene
| Conditions | Yield |
|---|---|
| Destillation unter gewoehnlichem Druck; |
| Conditions | Yield |
|---|---|
| at 160 - 180℃; |
- Total:14 Page 1 of 1 1
What can I do for you?
Get Best Price
Specification
The Sulfurous acid, with the CAS registry number 7782-99-2 and EINECS registry number 231-973-1, is also called Dihydrogen sulfite. It is a kind of air sensitive chemical, and belongs to the product category of Inorganics. And the molecular formula of the chemical is H2O3S. There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase. The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogensulfite) and sulfite. The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogensulfite) and sulfite.
The characteristics of Sulfurous acid are as followings: (1)ACD/LogP: -1.59; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -6.06; (4)ACD/LogD (pH 7.4): -6.09; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1 ; (7)#H bond acceptors: 3; (8)#H bond donors: 2; (9)#Freely Rotating Bonds: 0; (10)Polar Surface Area: 54.74 Å2; (11)Index of Refraction: 1.788; (12)Molar Refractivity: 13.98 cm3; (13)Molar Volume: 33 cm3; (14)olarizability: 5.54×10-24cm3; (15)Surface Tension: 291.3 dyne/cm; (16)Density: 2.483 g/cm3.
You should be cautious while dealing with this chemical. It is harmful by inhalation, and may cause burns. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice, or if in case of accident or if you feel unwell, seek medical advice immediately (show label where possible).
Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=S(O)O
(2)InChI: InChI=1/H2O3S/c1-4(2)3/h(H2,1,2,3)
(3)InChIKey: LSNNMFCWUKXFEE-UHFFFAOYAJ
The toxicity data is as follows:
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| human | TDLo | oral | 500ug/kg (0.5mg/kg) | GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" GASTROINTESTINAL: NAUSEA OR VOMITING GASTROINTESTINAL: OTHER CHANGES | Archiv fuer Experimentelle Pathologie und Pharmakologie. Vol. 54, Pg. 421, 1906. |