亚硫酸

Description

sulfurous acid · CAS 15181-46-1 · HO3S-. UNII OJ9787WBLU.

Identification

CAS Registry Number	15181-46-1
PubChem CID	104748
Molecular formula	HO3S-
IUPAC name	hydrogen sulfite
UNII (FDA)	OJ9787WBLU

Computed Descriptors

Molecular Weight	81.07
XLogP3	-1
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	0
Exact Mass	80.96464006
Monoisotopic Mass	80.96464006
Topological Polar Surface Area	79.6
Heavy Atom Count	4
Formal Charge	-1

Physical description & handling notes

• Bisulphites, aqueous solutions are light colored liquids. They can cause severe burns to skin, eyes and mucous membranes. The material is noncombustible. If available, obtain the technical name of the material from the shipping papers and contact CHEMTREC, 800-424-9300 for specific response information.

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS

Documented Uses

• Sulfonic Acid (Class: Other Substances, Added Date: 10-1998)

Synonyms

Hydrogen sulfite; Bisulfite; hydrogensulfite; Bisulphite; Hydrosulfite anion; 15181-46-1; HSO3-; Hydrogen sulfite(1-); OJ9787WBLU; CHEBI:17137; RefChem:147076; Sulfite, hydrogen; sulfonic acid; bisulfite ion; SULFUROUS ACID, ION(1-); Sulfite LYE

Frequently Asked Questions

What are the CAS number and molecular formula of sulfurous acid?

CAS 15181-46-1; molecular formula HO3S-; molecular weight — g/mol.

What other names is sulfurous acid known by?

Hydrogen sulfite, Bisulfite, hydrogensulfite, Bisulphite, Hydrosulfite anion, 15181-46-1.

What is the regulatory status of sulfurous acid?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.