Sodium Bisulfite

Name: Sodium Bisulfite
Brand: Vaqora Chemicals
SKU: VQ-014116

About Sodium Bisulfite

Listed under CAS 7631-90-5, Sodium Bisulfite is an alkali metal compound available from Vaqora Chemicals. With the molecular formula HNaO3S, it has a molar mass of 104.06 g/mol. Its systematic (IUPAC) name is sodium hydrogen sulfite. Alternative names: Hydrogen sodium sulfite and Hydrogen sulfite sodium.

Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 1 hazard statement. Review the Safety Data Sheet before use.

Key uses span materials research and chemical synthesis. It is used across academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Sodium Bisulfite is dispatched with a Certificate of Analysis (COA) to destinations worldwide. This item is currently in stock for prompt dispatch. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Materials research
Chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sodium Bisulfite
Catalogue No.	VQ-014116
CAS Number	7631-90-5
IUPAC name	sodium hydrogen sulfite
Molecular formula	HNaO₃S
Molecular weight	104.06 g/mol
Exact mass	103.9544
Grade	Reference Standard
InChIKey	DWAQJAXMDSEUJJ-UHFFFAOYSA-M
SMILES	OS(=O)[O-].[Na+]
PubChem CID	23665763

Physical properties
Physical form	Other
H-bond donors / acceptors	1 / 4
TPSA	79.6 Å²
Synonyms	Hydrogen sodium sulfite, Hydrogen sulfite sodium, Monosodium sulfite, Sodium acid sulfite, Sodium bisulfite (NaHSO3), Sodium bisulphite, Sodium sulfite (NaHSO3), FR-62, HC 007, sodium hydrogensulfite, Sulfurous acid, monosodium salt, Sodium sulhydrate

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 7631-90-5

Sodium bisulphite

CAS: 7631-90-5
Formula: HNaO₃S
MW: 104.06 g/mol

VQ-014119

ACS

Sodium bisulphite ACS reagent

CAS: 7631-90-5
Formula: HNaO₃S
MW: 104.06 g/mol

VQ-014120

Synthesis

Sodium Bisulphite Solution In Water 39%, for synthesis

CAS: 7631-90-5
Formula: HNaO₃S
MW: 104.06 g/mol

VQ-046540

AR

Sodium bisulphite, GR

CAS: 7631-90-5
Formula: HNaO₃S
MW: 104.06 g/mol

VQ-014121

Frequently asked questions

What is the CAS number of Sodium Bisulfite?

The CAS Registry Number of Sodium Bisulfite is 7631-90-5. It is also known as Hydrogen sodium sulfite, Hydrogen sulfite sodium, Monosodium sulfite.

What is the molecular formula and molecular weight of Sodium Bisulfite?

Sodium Bisulfite has the molecular formula HNaO3S and a molecular weight of 104.06 g/mol. Its IUPAC name is sodium hydrogen sulfite.

Which grade and pack sizes of Sodium Bisulfite can I order?

We supply Sodium Bisulfite in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg, 250 mg, 500 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sodium Bisulfite?

Yes. Every lot of Sodium Bisulfite is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Sodium Bisulfite be shipped internationally?

Yes. Sodium Bisulfite is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.