At a Glance
Material Family
Acids & Salts
Record Type
Salt
Primary Role
Synthesis Intermediate · pH Adjustment
Functional Roles
Industries Served
Applications & Use Cases
- ▸ Chloride-free potassium fertilizer (sulfate of potash) for chloride-sensitive crops such as tobacco, fruits, vegetables, and tree nuts, supplying both potassium and sulfur.
- ▸ Soluble-grade SOP for fertigation and foliar feeding through drip and spray irrigation systems where low chloride and high solubility are required.
- ▸ Raw material and intermediate in the manufacture of potassium alum and other potassium chemicals.
- ▸ Flux and additive in specialty glass and ceramic frit formulations to modify melting behavior.
- ▸ Food-grade nutrient/acidity regulator (INS 515) and used as a sulfur-free water-softening and electrolyte source in select industrial processes.
Physical Properties
appearance
white crystalline solid or powder
molar_mass
174.26 g/mol
density
2.66 g/cm3
melting_point
1069 C
water_solubility
120 g/L (25 C)
ph
7 (neutral, aqueous solution)
odor
odorless
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Chemical Identity
CAS Number
7778-80-5
Molecular Formula
K2O4S
Molecular Weight
174.26 g/mol
IUPAC Name
dipotassium;sulfate
PubChem CID
InChI Key
OTYBMLCTZGSZBG-UHFFFAOYSA-L
Synonyms & Trade Names
Related Products
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.