Sodium bisulphite

Name: Sodium bisulphite
Brand: Vaqora Chemicals
SKU: VQ-014119

About Sodium bisulphite

Sodium bisulphite (CAS 7631-90-5) is an alkali metal compound offered by Vaqora Chemicals at a purity of ≥58.0%. The compound has the formula HNaO3S, corresponding to a molecular weight of 104.06 g/mol. The IUPAC name is sodium hydrogen sulfite. Common synonyms include Sodium bisulfite and sodium hydrogensulfite.

In its supplied form it is a powder or crystalline or crystalline powder. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include food and flavour applications and materials research. Our customers for this product work in academic and industrial research.

We offer Sodium bisulphite in 500 g, 5 kg, 25 kg and 4 x 50 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Food & flavour applications
Materials research

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sodium bisulphite
Catalogue No.	VQ-014119
CAS Number	7631-90-5
IUPAC name	sodium hydrogen sulfite
Molecular formula	HNaO₃S
Molecular weight	104.06 g/mol
Exact mass	103.9544
Purity / assay	≥58.0%
HSN code	28321010
InChIKey	DWAQJAXMDSEUJJ-UHFFFAOYSA-M
SMILES	OS(=O)[O-].[Na+]
PubChem CID	23665763

Physical properties
Physical form	Crystalline
Appearance	Powder or crystalline or crystalline powder
H-bond donors / acceptors	1 / 4
TPSA	79.6 Å²
Synonyms	Sodium bisulfite, sodium hydrogensulfite, Monosodium sulfite, Sulfurous acid, monosodium salt, Sodium sulhydrate, Uantax SBS, Hydrogen sodium sulfite, Hydrogen sulfite sodium, Monosodic sulphite, Sodium hydrosulfite(DOT), Bisulfite de sodium, Sodium bisulfite (1:1)

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

Reference Standard

Sodium Bisulfite

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

In stock

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 bisulphite?

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

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

Sodium bisulphite 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 bisulphite can I order?

We supply Sodium bisulphite in (≥58.0%) grade, in 500 g, 5 kg, 25 kg, 4 x 50 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sodium bisulphite?

Yes. Every lot of Sodium bisulphite 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 bisulphite be shipped internationally?

Yes. Sodium bisulphite 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.