Sodium metabisulphite, GR 98%+

Name: Sodium metabisulphite, GR 98%+
Brand: Vaqora Chemicals
SKU: VQ-000977

About Sodium metabisulphite, GR 98%+

Listed under CAS 7681-57-4, Sodium metabisulphite is a synthetic reagent available from Vaqora Chemicals in AR grade, specified at ≥98% purity. The compound has the formula Na2O5S2, corresponding to a molecular weight of 190.11 g/mol. It is also known as Sodium disulfite or Sodium pyrosulfite.

In its supplied form it is a white crystalline powder. Key physical data: a melting point of above 300 °C and a density of 1.48 g/cm3. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for organic synthesis, reaction development and medicinal chemistry. Our customers for this product work in academic and industrial research.

We offer Sodium metabisulphite in 500 g, 1 kg, 5 kg and 4 x 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Sodium metabisulphite, GR 98%+
Catalogue No.	VQ-000977
CAS Number	7681-57-4
Molecular formula	Na₂O₅S₂
Molecular weight	190.11 g/mol
Exact mass	189.8983
Grade	AR
Purity / assay	≥98%
HSN code	28321090
InChIKey	HRZFUMHJMZEROT-UHFFFAOYSA-L
SMILES	[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
PubChem CID	656671

Physical properties
Physical form	Powder
Appearance	White crystalline powder
Melting point	>300 °C
Density	1.48 g/cm3
H-bond donors / acceptors	0 / 6
TPSA	125 Å²
Synonyms	Sodium disulfite, Sodium pyrosulfite, Sodium metabisulfite, Disodium pyrosulfite, Natrii disulfis, Campden Tablets, Disodium metabisulfite, Natrium pyrosulfit, sodium pyrosulphite, Sodium bisulfite anhydrous, Natrium metabisulfurosum, Sodium pyrosulfite (Na2S2O5)

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H318Causes serious eye damage

Precautionary statements: P264, P264 + P265, P270, P280, P301 + P317, P305 + P354 + P338, 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 7681-57-4

Reference Standard

Sodium Metabisulfite

CAS: 7681-57-4
Formula: Na₂O₅S₂
MW: 190.11 g/mol

In stock

EP/Ph. Eur.

Sodium Metabisulfite, EP/Ph. Eur.

CAS: 7681-57-4
Formula: Na₂O₅S₂
MW: 190.11 g/mol

VQ-047033

Food Grade

Sodium Metabisulfite, food grade (FCC)

CAS: 7681-57-4
Formula: Na₂O₅S₂
MW: 190.11 g/mol

VQ-045591

IP/BP/USP/EP/Ph. Eur.…

Sodium Metabisulfite, IP/BP/USP/EP/Ph. Eur., ACS, AR

CAS: 7681-57-4
Formula: Na₂O₅S₂
MW: 190.11 g/mol

VQ-047185

LR / Food Grade

Sodium Metabisulfite, LR, food grade (FCC)

CAS: 7681-57-4
Formula: Na₂O₅S₂
MW: 190.11 g/mol

VQ-047186

Extra Pure

Sodium metabisulphite, 98%

CAS: 7681-57-4
Formula: Na₂O₅S₂
MW: 190.11 g/mol

VQ-000976

Frequently asked questions

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

The CAS Registry Number of Sodium metabisulphite, GR 98%+ is 7681-57-4. It is also known as Sodium disulfite, Sodium pyrosulfite, Sodium metabisulfite.

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

Sodium metabisulphite, GR 98%+ has the molecular formula Na2O5S2 and a molecular weight of 190.11 g/mol.

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

We supply Sodium metabisulphite, GR 98%+ in AR (≥98%) grade, in 500 g, 1 kg, 5 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 metabisulphite, GR 98%+?

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

Yes. Sodium metabisulphite, 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.