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7631-90-5

Basic Information
CAS No.: 7631-90-5
Name: Sulfurousacid, sodium salt (1:1)
Molecular Structure:
Molecular Structure of 7631-90-5 (Sulfurousacid, sodium salt (1:1))
Formula: HNaO3S
Molecular Weight: 104.06
Synonyms: Sulfurousacid, monosodium salt (8CI,9CI);E 222;FR-62;Hydrogen sodium sulfite;Hydrogen sulfite sodium;Monosodium sulfite;Sodium acid sulfite;Sodiumbisulfite;Sodium bisulfite (NaHSO3);Sodium bisulphite;Sodium hydrogensulfite;Sodium sulfite (NaHSO3);Sodium Bisulfite;Sodium hydrogen sulfite;
EINECS: 231-548-0
Density: 1.48 g/cm3
Melting Point: 150 °C
Boiling Point: N/A
Flash Point: N/A
Solubility: 300 g/L in water
Appearance: white powder
Hazard Symbols: HarmfulXn
Risk Codes: 22-31-41
Safety: 26-39-46-25
Transport Information: UN 2693
PSA: 79.57000
LogP: 0.20420
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Chemistry

IUPAC Name: sodium hydrogen sulfite 
Empirical Formula: HNaO3S
Molecular Weight: 104.0609g/mol
EINECS: 231-673-0 
Structure of Sulfurousacid, sodium salt (1:1) (CAS NO.7631-90-5):

Melting Point: 150 °C
Density: 1.48  
Water Solubility: 300 g/L
Merck: 13,8660
Stability: Stable. Incompatible with strong oxidizing agents, strong acids. 
Product Categories: INORGANIC & ORGANIC CHEMICALS;Inorganics;Water Ttreatment Chemicals 
Canonical SMILES: OS(=O)[O-].[Na+]
InChI: InChI=1S/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-1
InChIKey: DWAQJAXMDSEUJJ-UHFFFAOYSA-M

Toxicity Data With Reference

1.    

mmo-sat 1 mmol/L

    TCMUD8    Teratogenesis, Carcinogenesis, and Mutagenesis. 5 (1985),195.
2.    

mmo-hmi 200 mmol/L ABMPAC 17,115,80

3.    

orl-rat LD50:2 g/kg

    85INA8    Documentation of the Threshold Limit Values and Biological Exposure Indices. 6 (1991),1408.
4.    

ipr-rat LD50:475 mg/kg

    PNASA6    Proceedings of the National Academy of Sciences of the United States of America. 70 (1973),3655.
5.    

ivn-rat LD50:115 mg/kg

    JPETAB    Journal of Pharmacology and Experimental Therapeutics. 101 (1951),101.
6.    

ipr-mus LD50:675 mg/kg

    CLPTAT    Clinical Pharmacology and Therapeutics. 9 (1968),328.
7.    

ivn-mus LD50:130 mg/kg

    JPETAB    Journal of Pharmacology and Experimental Therapeutics. 101 (1951),101.
8.    

ipr-dog LD50:244 mg/kg

    CLPTAT    Clinical Pharmacology and Therapeutics. 9 (1968),328.
9.    

ipr-rbt LD50:300 mg/kg

    CLPTAT    Clinical Pharmacology and Therapeutics. 9 (1968),328.
10.    

ivn-rbt LD50:65 mg/kg

    JPETAB    Journal of Pharmacology and Experimental Therapeutics. 101 (1951),101.

Consensus Reports

SODIUM BISULFITE  is reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Safety Profile

Poison by intravenous and intraperitoneal routes. Moderately toxic by ingestion. A corrosive irritant to skin, eyes, and mucous membranes. Mutation data reported. An allergen. When heated to decomposition it emits toxic fumes of SOx and Na2O. See also SULFUROUS ACID and SULFITES.
Hazard Codes: HarmfulXn
Risk Statements: 22-31-41 
R22:Harmful if swallowed. 
R31 :Contact with acids liberates toxic gas. 
R41:Risk of serious damage to the eyes.
Safety Statements: 26-39-46-25
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S39:Wear eye / face protection. 
S46:If swallowed, seek medical advice immediately and show this container or label. 
S25:Avoid contact with eyes.
RIDADR: UN 2693
WGK Germany: 1
RTECS: UX8225000
Hazardous Substances Data: 7631-90-5(Hazardous Substances Data)

Standards and Recommendations

OSHA PEL: TWA 5 mg/m3
ACGIH TLV: TWA 5 mg/m3; Not Classifiable as a Human Carcinogen
DOT Classification:  8; Label: Corrosive

Specification

  Sulfurousacid, sodium salt (1:1) , its cas register number is 7631-90-5. It also can be called AI3-08582 ; Bisulfite de sodium ; EPA Pesticide Chemical Code 078201 ; Hydrogen sodium sulfite ; Hydrogen sulfite sodium ; Monosodium sulfite ;
 Sodium acid sulfite ; Sodium bisulfite ; Sodium bisulphite ; Sodium hydrogen sulfite ; Sodium hydrosulfite(DOT) ; Sodium metabisulfite ; Sodium sulfite (NaHSO3) ; Sodium sulhydrate ; Sulfurous acid, monosodium salt . Sulfurousacid, sodium salt (1:1) (CAS NO.7631-90-5) is a white powder.