Potassium metabisulphite, BP/USP/EP/Ph. Eur.,… 16731-55-8

Name: Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC)
Brand: Vaqora Chemicals
SKU: VQ-047233

About Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC)

Listed under CAS 16731-55-8, Potassium metabisulphite is an alkali metal compound available from Vaqora Chemicals (BP/USP/EP/Ph. Eur. / AR / Food Grade grade). Formula K2O5S2, molecular weight 222.33 g/mol. It is also known as Potassium disulfite or Dipotassium pyrosulfite.

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.

It is commonly used for materials research and chemical synthesis. Typical end-use sectors are academic and industrial research.

Available in 500 g and 50 kg packs, Potassium metabisulphite is dispatched with a Certificate of Analysis (COA) to destinations worldwide. SDS and detailed specification sheets can be requested with your quotation. Larger quantities and custom packaging are available. Request a quote for pricing and lead time.

Typical applications

Materials research
Chemical synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC)
Catalogue No.	VQ-047233
CAS Number	16731-55-8
Molecular formula	K₂O₅S₂
Molecular weight	222.33 g/mol
Exact mass	221.8461
Grade	BP/USP/EP/Ph. Eur. / AR / Food Grade
HSN code	28322010
InChIKey	RWPGFSMJFRPDDP-UHFFFAOYSA-L
SMILES	[O-]S(=O)S(=O)(=O)[O-].[K+].[K+]
PubChem CID	28019

Physical properties
Physical form	Other
H-bond donors / acceptors	0 / 6
TPSA	125 Å²
Synonyms	Potassium disulfite, Dipotassium pyrosulfite, Dipotassium disulfite, Dipotassium metabisulfite, Potassium disulfite (K2S2O5), Potassium pentaoxodisulfate, Pyrosulfurous acid, dipotassium salt, Ins-224, Potassium metabisulfite (e 224), Potassium pyrosulfite, Disulfurous acid, potassium salt (1:2), Potassium metabisulfite [NF]

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P332 + P317, P362 + P364, P403 + P233, 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 16731-55-8

Potassium metabisulphite, 95%

CAS: 16731-55-8
Formula: K₂O₅S₂
MW: 222.33 g/mol

VQ-014048

Food Grade

Potassium metabisulphite, food grade (FCC)

CAS: 16731-55-8
Formula: K₂O₅S₂
MW: 222.33 g/mol

VQ-046915

AR

Potassium metabisulphite, GR 98%+

CAS: 16731-55-8
Formula: K₂O₅S₂
MW: 222.33 g/mol

VQ-014049

Frequently asked questions

What is the CAS number of Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC)?

The CAS Registry Number of Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) is 16731-55-8. It is also known as Potassium disulfite, Dipotassium pyrosulfite, Dipotassium disulfite.

What is the molecular formula and molecular weight of Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC)?

Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) has the molecular formula K2O5S2 and a molecular weight of 222.33 g/mol.

Which grade and pack sizes of Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) can I order?

We supply Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) in BP/USP/EP/Ph. Eur. / AR / Food Grade grade, in 500 g, 50 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC)?

Yes. Every lot of Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) 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 Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) be shipped internationally?

Yes. Potassium metabisulphite, BP/USP/EP/Ph. Eur., AR, food grade (FCC) 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.