Potassium sulphate, GR 99%+

Name: Potassium sulphate, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-014069

About Potassium sulphate, GR 99%+

Vaqora Chemicals supplies Potassium sulphate in AR grade, an alkali metal compound registered under CAS number 7778-80-5 at a purity of ≥99%. The compound has the formula K2O4S, corresponding to a molecular weight of 174.26 g/mol. The IUPAC name is dipotassium. Sulfate. Common synonyms include Dipotassium sulfate and Sulfuric acid dipotassium salt.

In its supplied form it is a white crystalline powder. Literature values give a melting point of 1069 °C and a density of 2.66 g/cm3 at 20 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for analytical determinations, molecular biology workflows, protein and peptide research and food and flavour applications. It is used across academic and industrial research.

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

Typical applications

Analytical determinations
Molecular biology workflows
Protein & peptide research
Food & flavour applications

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Potassium sulphate, GR 99%+
Catalogue No.	VQ-014069
CAS Number	7778-80-5
IUPAC name	dipotassium;sulfate
Molecular formula	K₂O₄S
Molecular weight	174.26 g/mol
Exact mass	173.8791
Grade	AR
Purity / assay	≥99%
HSN code	28332990
InChIKey	OTYBMLCTZGSZBG-UHFFFAOYSA-L
SMILES	[O-]S(=O)(=O)[O-].[K+].[K+]
PubChem CID	24507

Physical properties
Physical form	Powder
Appearance	White crystalline powder
Melting point	1069 °C
Density	2.66 g/cm3 at 20 °C
H-bond donors / acceptors	0 / 4
TPSA	88.6 Å²
Synonyms	Dipotassium sulfate, Sulfuric acid dipotassium salt, Arcanum duplicatum, Sulfuric acid, dipotassium salt, Kalium sulphuricum, Tartarus vitriolatus, Kali sulphuricum, Potassium sulfate (K2(SO4)), K2SO4, Sulfuric acid potassium salt (1:2), Potassium (as sulfate), INS-515(I)

Safety & hazard information (GHS)

Corrosive

Signal word: Danger

Hazard statements

H318Causes serious eye damage

Precautionary statements: P264 + P265, P280, P305 + P354 + P338, P317

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 7778-80-5

Extra Pure

Potassium sulphate, 99%

CAS: 7778-80-5
Formula: K₂O₄S
MW: 174.26 g/mol

VQ-014068

BP/EP

Potassium sulphate, BP/EP 98.50–101.00%

CAS: 7778-80-5
Formula: K₂O₄S
MW: 174.26 g/mol

VQ-046776

BP/EP/Ph. Eur. / ACS …

Potassium sulphate, BP/EP/Ph. Eur., ACS, AR

CAS: 7778-80-5
Formula: K₂O₄S
MW: 174.26 g/mol

VQ-047241

Frequently asked questions

What is the CAS number of Potassium sulphate, GR 99%+?

The CAS Registry Number of Potassium sulphate, GR 99%+ is 7778-80-5. It is also known as Dipotassium sulfate, Sulfuric acid dipotassium salt, Arcanum duplicatum.

What is the molecular formula and molecular weight of Potassium sulphate, GR 99%+?

Potassium sulphate, GR 99%+ has the molecular formula K2O4S and a molecular weight of 174.26 g/mol.

Which grade and pack sizes of Potassium sulphate, GR 99%+ can I order?

We supply Potassium sulphate, GR 99%+ in AR (≥99%) 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 Potassium sulphate, GR 99%+?

Yes. Every lot of Potassium sulphate, GR 99%+ 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 sulphate, GR 99%+ be shipped internationally?

Yes. Potassium sulphate, GR 99%+ 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.