Potassium sulphite

Name: Potassium sulphite
Brand: Vaqora Chemicals
SKU: VQ-014071

About Potassium sulphite

Potassium sulphite is an alkali metal compound (Synthesis grade) carrying the CAS registry number 10117-38-1, specified at 85% purity. The compound has the formula K2O3S, corresponding to a molecular weight of 158.26 g/mol. Its systematic (IUPAC) name is dipotassium. Sulfite. Common synonyms include Potassium sulfite and Dipotassium sulfite.

In its supplied form it is a white to yellowish powder. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for materials research and chemical synthesis. Our customers for this product work in 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.

Typical applications

Materials research
Chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Potassium sulphite
Catalogue No.	VQ-014071
CAS Number	10117-38-1
IUPAC name	dipotassium;sulfite
Molecular formula	K₂O₃S
Molecular weight	158.26 g/mol
Exact mass	157.8842
Grade	Synthesis
Purity / assay	85%
HSN code	28334000
InChIKey	BHZRJJOHZFYXTO-UHFFFAOYSA-L
SMILES	[O-]S(=O)[O-].[K+].[K+]
PubChem CID	24958

Physical properties
Physical form	Powder
Appearance	White to yellowish powder
H-bond donors / acceptors	0 / 4
TPSA	82.4 Å²
Synonyms	Potassium sulfite, Dipotassium sulfite, Sulfurous acid, dipotassium salt, Potassium sulfite (K2SO3), Sulfurous acid, potassium salt, INS NO.225, INS-225, Potassiumsulfite, Sulfurous acid, potassium salt (1:2), Potassium sulfite(IV), Potassium sulfite, 90%, K2O3S

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + 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 10117-38-1

AR

Potassium sulphite, GR 90%

CAS: 10117-38-1
Formula: K₂O₃S
MW: 158.26 g/mol

VQ-014072

Frequently asked questions

What is the CAS number of Potassium sulphite?

The CAS Registry Number of Potassium sulphite is 10117-38-1. It is also known as Potassium sulfite, Dipotassium sulfite, Sulfurous acid, dipotassium salt.

What is the molecular formula and molecular weight of Potassium sulphite?

Potassium sulphite has the molecular formula K2O3S and a molecular weight of 158.26 g/mol.

Which grade and pack sizes of Potassium sulphite can I order?

We supply Potassium sulphite in Synthesis (85%) 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 Potassium sulphite?

Yes. Every lot of Potassium sulphite 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 sulphite be shipped internationally?

Yes. Potassium sulphite 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.