Sodium dithionite

Name: Sodium dithionite
Brand: Vaqora Chemicals
SKU: VQ-000970

About Sodium dithionite

Sodium dithionite is a synthetic reagent carrying the CAS registry number 7775-14-6 with a typical assay of 85–87%. With the molecular formula Na2O4S2, it has a molar mass of 174.11 g/mol. Alternative names: Sodium hypodisulfite and Sodium hydrosulphite.

The material typically appears as a white crystalline powder. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis, reaction development, medicinal chemistry and dyes and pigments manufacture. Buyers come mainly from academic and industrial research and textiles and dyeing.

Standard pack sizes are 500 g, 5 kg, 25 kg and 4 x 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry
Dyes & pigments manufacture

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sodium dithionite
Catalogue No.	VQ-000970
CAS Number	7775-14-6
Molecular formula	Na₂O₄S₂
Molecular weight	174.11 g/mol
Exact mass	173.9033
Purity / assay	85–87%
HSN code	28311010
InChIKey	JVBXVOWTABLYPX-UHFFFAOYSA-L
SMILES	[O-]S(=O)S(=O)[O-].[Na+].[Na+]
PubChem CID	24489

Physical properties
Physical form	Powder
Appearance	White crystalline powder
H-bond donors / acceptors	0 / 6
TPSA	119 Å²
UN number	UN 1384
Synonyms	Sodium hypodisulfite, Sodium hydrosulphite, Vatrolite, Sodium sulfoxylate, Disodium dithionite, Dithionous acid, disodium salt, Burmol, Blankit IN, V-Brite B, Hydrosulfite R Conc, Disodium hydrosulfite, Sodium hydrosulfite (Na2S2O4)

Safety & hazard information (GHS)

Flammable

Harmful / irritant

Signal word: Danger

Hazard statements

H251Self-heating, may catch fire
H302Harmful if swallowed

Precautionary statements: P235, P264, P270, P280, P301 + P317, P330, P407, P410, P413, P420, 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 7775-14-6

Industrial

Sodium Hydrosulphite (Sodium Dithionite)

CAS: 7775-14-6
Formula: Na₂O₄S₂
MW: 174.11 g/mol

VQ-019455

AR

Sodium Hydrosulphite, AR ≥87.0%

CAS: 7775-14-6
Formula: Na₂O₄S₂
MW: 174.11 g/mol

VQ-046928

Frequently asked questions

What is the CAS number of Sodium dithionite?

The CAS Registry Number of Sodium dithionite is 7775-14-6. It is also known as Sodium hypodisulfite, Sodium hydrosulphite, Vatrolite.

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

Sodium dithionite has the molecular formula Na2O4S2 and a molecular weight of 174.11 g/mol.

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

We supply Sodium dithionite in (85–87%) grade, in 500 g, 5 kg, 25 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sodium dithionite?

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

Yes. Sodium dithionite is classified as hazardous (UN 1384), 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.