Sodium sulphite, anhydrous, GR 98%+

Name: Sodium sulphite, anhydrous, GR 98%+
Brand: Vaqora Chemicals
SKU: VQ-014240

About Sodium sulphite, anhydrous, GR 98%+

Sodium sulphite is an alkali metal compound (AR grade) carrying the CAS registry number 7757-83-7 with a typical assay of 98%. Formula Na2O3S, molecular weight 126.05 g/mol. The IUPAC name is disodium. Sulfite. Alternative names: Disodium sulfite and Sodium sulfite anhydrous.

It is supplied as white powder or crystals. Keep the container tightly sealed and store it in a cool, dry area. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include dyes and pigments manufacture and materials research. It is used across academic and industrial research.

Standard pack sizes are 500 g, 5 kg and 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide. SDS and detailed specification sheets can be requested with your quotation.

Typical applications

Dyes & pigments manufacture
Materials research

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Sodium sulphite, anhydrous, GR 98%+
Catalogue No.	VQ-014240
CAS Number	7757-83-7
IUPAC name	disodium;sulfite
Molecular formula	Na₂O₃S
Molecular weight	126.05 g/mol
Exact mass	125.9364
Grade	AR
Purity / assay	98%
HSN code	28321090
InChIKey	GEHJYWRUCIMESM-UHFFFAOYSA-L
SMILES	[O-]S(=O)[O-].[Na+].[Na+]
PubChem CID	24437

Physical properties
Physical form	Crystalline
Appearance	White powder or crystals
H-bond donors / acceptors	0 / 4
TPSA	82.4 Å²
Synonyms	Disodium sulfite, Sodium sulfite anhydrous, Sulfurous acid, disodium salt, Natrium sulfurosum, S-WAT, Natrii sulphis, Anhydrous sodium sulfite, Sodium sulfite (Na2SO3), Exsiccated sodium sulfite, Natrum sulphurosum, Sodium sulphite anhydrous, Sulfurous acid, sodium salt (1:2)

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H319Causes serious eye irritation

Precautionary statements: P260, P264, P264 + P265, P270, P280, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P321, P330, P332 + P317, P337 + P317, P362 + P364, P363, P405, 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 7757-83-7

ACS

Sodium sulphite ACS reagent, ≥99.5%

CAS: 7757-83-7
Formula: Na₂O₃S
MW: 126.05 g/mol

VQ-014238

EP

Sodium sulphite anhydrous, EP

CAS: 7757-83-7
Formula: Na₂O₃S
MW: 126.05 g/mol

VQ-047267

Extra Pure

Sodium sulphite, anhydrous, 98%

CAS: 7757-83-7
Formula: Na₂O₃S
MW: 126.05 g/mol

VQ-014239

BP

Sodium sulphite, BP 95.0%

CAS: 7757-83-7
Formula: Na₂O₃S
MW: 126.05 g/mol

VQ-047036

Frequently asked questions

What is the CAS number of Sodium sulphite, anhydrous, GR 98%+?

The CAS Registry Number of Sodium sulphite, anhydrous, GR 98%+ is 7757-83-7. It is also known as Disodium sulfite, Sodium sulfite anhydrous, Sulfurous acid, disodium salt.

What is the molecular formula and molecular weight of Sodium sulphite, anhydrous, GR 98%+?

Sodium sulphite, anhydrous, GR 98%+ has the molecular formula Na2O3S and a molecular weight of 126.05 g/mol.

Which grade and pack sizes of Sodium sulphite, anhydrous, GR 98%+ can I order?

We supply Sodium sulphite, anhydrous, GR 98%+ in AR (98%) grade, in 500 g, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sodium sulphite, anhydrous, GR 98%+?

Yes. Every lot of Sodium sulphite, anhydrous, GR 98%+ 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 sulphite, anhydrous, GR 98%+ be shipped internationally?

Yes. Sodium sulphite, anhydrous, GR 98%+ 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.