Sodium Metabisulfite, EP/Ph. Eur.

Name: Sodium Metabisulfite, EP/Ph. Eur.
Brand: Vaqora Chemicals
SKU: VQ-047033

About Sodium Metabisulfite, EP/Ph. Eur.

Sodium Metabisulfite (CAS 7681-57-4) is an alkali metal compound offered by Vaqora Chemicals in EP/Ph. Eur. grade. The compound has the formula Na2O5S2, corresponding to a molecular weight of 190.11 g/mol. Alternative names: Sodium pyrosulfite and Sodium disulfite.

Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 2 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for materials research and chemical synthesis. Buyers come mainly from academic and industrial research.

Standard pack sizes are 500 g, 5 kg, 25 kg and 50 kg (5 x 10), and every batch ships with a Certificate of Analysis (COA) and we export worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Materials research
Chemical synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Sodium Metabisulfite, EP/Ph. Eur.
Catalogue No.	VQ-047033
CAS Number	7681-57-4
Molecular formula	Na₂O₅S₂
Molecular weight	190.11 g/mol
Exact mass	189.8983
Grade	EP/Ph. Eur.
HSN code	28321090
InChIKey	HRZFUMHJMZEROT-UHFFFAOYSA-L
SMILES	[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]
PubChem CID	656671

Physical properties
Physical form	Other
H-bond donors / acceptors	0 / 6
TPSA	125 Å²
Synonyms	Sodium pyrosulfite, Sodium disulfite, Disodium pyrosulfite, Natrii disulfis, Disodium metabisulfite, Natrium pyrosulfit, sodium pyrosulphite, Sodium bisulfite anhydrous, Natrium metabisulfurosum, Sodium pyrosulfite (Na2S2O5), Disodium pentaoxodisulfate, INS NO.223

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

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

AR

Sodium metabisulphite, GR 98%+

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

VQ-000977

Frequently asked questions

What is the CAS number of Sodium Metabisulfite, EP/Ph. Eur.?

The CAS Registry Number of Sodium Metabisulfite, EP/Ph. Eur. is 7681-57-4. It is also known as Sodium pyrosulfite, Sodium disulfite, Disodium pyrosulfite.

What is the molecular formula and molecular weight of Sodium Metabisulfite, EP/Ph. Eur.?

Sodium Metabisulfite, EP/Ph. Eur. has the molecular formula Na2O5S2 and a molecular weight of 190.11 g/mol.

Which grade and pack sizes of Sodium Metabisulfite, EP/Ph. Eur. can I order?

We supply Sodium Metabisulfite, EP/Ph. Eur. in EP/Ph. Eur. grade, in 500 g, 5 kg, 25 kg, 50 kg (5 x 10) packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sodium Metabisulfite, EP/Ph. Eur.?

Yes. Every lot of Sodium Metabisulfite, EP/Ph. Eur. 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 Metabisulfite, EP/Ph. Eur. be shipped internationally?

Yes. Sodium Metabisulfite, EP/Ph. Eur. 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.