Potassium Hydroxide, ACS/Reagent — CAS 1310-58-3
Potassium Hydroxide ACS/Reagent — CAS 1310-58-3
Chemical Name: Potassium Hydroxide
CAS Number: 1310-58-3
Molecular Formula: KOH
Molecular Weight: 56.11 g/mol
Grade: ACS / Reagent Grade
Physical State: Solid
Appearance: White to almost-white pellets. Current ACS/reagent specifications from Sigma-Aldrich and TCI list pellet form and ≥85% assay.
Synonyms: Caustic Potash, Potassium Hydrate
Product Description
Potassium Hydroxide, ACS/Reagent Grade, is a high-purity inorganic base supplied primarily as solid pellets for laboratory analysis, chemical preparation, pH adjustment, neutralization, and chemical synthesis. It is highly soluble in water and is hygroscopic, so packaging and storage should protect the material from moisture.
Typical Applications
Analytical and reagent laboratories
pH adjustment and neutralization
Preparation of alkaline solutions
Chemical synthesis
Sample preparation
Pharmaceutical and chemical research
Water and wastewater treatment
Quality-control laboratories
Industrial chemical processing
Product Specifications
Parameter | Specification |
Product | Potassium Hydroxide, ACS/Reagent |
CAS | 1310-58-3 |
Formula | KOH |
Molecular Weight | 56.11 g/mol |
Grade | ACS / Reagent |
Physical State | Solid |
Appearance | White to almost-white pellets |
Assay / Purity | ≥85% for representative ACS products |
Packaging | Laboratory and bulk packaging available |
Sigma-Aldrich lists an ACS reagent product at ≥85% assay, pellet form, with potassium carbonate ≤2.0%; TCI similarly specifies white-to-almost-white pellets with minimum 85.0% purity. Exact values should be confirmed against the supplied product's CoA.
Documentation & Supply
Certificate of Analysis (CoA), subject to supplied product
Safety Data Sheet (SDS)
Technical/product specification
Laboratory and commercial packaging
Bulk and repeat procurement subject to product availability
Request a Quote: Provide the required pellet form, purity, quantity, packaging, destination, and documentation requirements for a commercial quotation.

