TCS Industries Limited (China-sourced API supplier) supplies Potassium Hydroxide -– Strong Alkali for pH Adjustment & Saponification CAS 1310-58-3 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | Potassium Hydroxide -– Strong Alkali for pH Adjustment & Saponification |
|---|---|
| Structural Formula |  |
| CAS Number | 1310-58-3 |
| Molecular Formula | KOH |
| Molecular Weight | 56.11 g/mol |
| InChIKey | KWYUFKZDYYNOTN-UHFFFAOYSA-M |
| SMILES | Available on request where applicable |
| Appearance | White pellets, flakes, or sticks; highly hygroscopic |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
Potassium Hydroxide (CAS 1310-58-3) is a strong inorganic base with the formula KOH, commonly known as caustic potash. It is highly soluble in water (1110 g/L at 25 °C), exothermic upon dissolution, and classified as corrosive (GHS Category 1). Potassium hydroxide is used in soap and detergent manufacturing (liquid soaps, shampoos), pH adjustment in pharmaceutical and food processing, electrolyte in alkaline batteries, and as a reagent in chemical synthesis.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies Potassium Hydroxide in flake, pellet and solution forms across technical, food and pharmaceutical grades.
> Applications
Saponification and liquid soap production
Potassium hydroxide reacts with fatty acids and triglycerides to produce potassium soaps, which are softer and more water-soluble than sodium soaps. This saponification reaction is the basis of liquid soap, shampoo and cleaning product manufacturing. Oleic, coconut and palm kernel oil feedstocks produce different soap characteristics. KOH concentration (typically 45–50% w/w solution) and temperature control are critical process parameters. Adya et al. (J Am Oil Chem Soc, 2014, 91:1193–1198) evaluated the reaction kinetics and KOH concentration effects on saponification yield in liquid soap manufacturing.
pH adjustment in pharmaceutical and food processing
Potassium hydroxide is used as a pH adjuster and alkalizing agent in pharmaceutical formulations (FDA IID-listed), food processing (E525) and cosmetic products. In pharmaceutical manufacturing, it adjusts pH of parenteral solutions, oral liquids and topical preparations. In food processing, it is used in cocoa dutching, olive processing and pH control of canned vegetables. Pharmaceutical-grade KOH must meet USP-NF or Ph.Eur. monograph requirements.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for Potassium Hydroxide -– Strong Alkali for pH Adjustment & Saponification with buyers in South America, Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada.
- Evaluation and commercial quantities: 25 kg drums for qualification; 200 L drums (liquid 45–50%) and palletized units for production. Flake, pellet, and solution forms available in technical, food and pharmaceutical grades.
- Pallet quantities and production campaigns: repeat supply is coordinated against packaging, lead time, annual demand and destination-market import requirements.
> Quality & Documentation
Key specification parameters include assay (≥85% for solid forms, balance is water and K₂CO₃), carbonate content (≤2%), chloride, sulfate, heavy metals (Pb, As, Hg), iron, sodium, and nitrogen compounds. Pharmaceutical grade must meet USP-NF (Potassium Hydroxide) or Ph.Eur. (Kalii hydroxidum) monograph limits. Food grade (E525) must meet FCC specifications. ACS reagent grade specifies additional impurities (Al, Ca, Mg, phosphate, silicate). COA and MSDS are standard.
> Packaging
Potassium Hydroxide is corrosive, hygroscopic and reacts with CO₂ from air to form potassium carbonate. Solid forms (flakes, pellets) are packed in steel drums or HDPE drums with sealed lids. Solutions (45–50%) are supplied in HDPE drums (200–250 L) or IBC containers (1000 L). All packaging is UN-rated for corrosive substances. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by specification, packaging and destination. Common commercial discussions use 25 kg bag/drum formats, pallet quantities and production-campaign planning; smaller samples may be reviewed for qualified formulation teams.
> Regulatory & Compounding Context
Potassium Hydroxide is monographed in USP-NF and Ph.Eur. Listed in the FDA Inactive Ingredients Database. Approved as food additive E525 in the EU (Regulation (EC) 1333/2008) and GRAS in the US (21 CFR 184.1631). REACH-registered. Classified as Corrosive (GHS H314) — packaging, labeling, transport and storage must comply with ADR/IMDG/DOT regulations for corrosive substances. Buyers must confirm transport classification and local chemical handling requirements.
> Alias Index
- IUPAC: Potassium hydroxide
- CAS Number: 1310-58-3
- Formula: KOH (MW 56.11 g/mol)
- Common names: Caustic potash, Potassium hydrate, Potash lye, Kaliumhydroxid
- EU food additive: E525
- Pharmacopoeial names: Kalii hydroxidum (Ph.Eur.), Potassium Hydroxide (USP-NF)
- GHS classification: Corrosive, Category 1 (H314)
- InChIKey: KWYUFKZDYYNOBT-UHFFFAOYSA-M
- Commercial request terms: caustic potash supplier, KOH flakes, potassium hydroxide pharma grade, E525, TCS Industries Limited
> FAQ
What forms of Potassium Hydroxide does TCS supply?
TCS sources KOH in flake, pellet and solution (45–50% w/w) forms. Available grades include technical, food (FCC/E525), pharmaceutical (USP-NF/Ph.Eur.) and ACS reagent. Specify the physical form, grade and intended application at inquiry.
What documents are available for Potassium Hydroxide -– Strong Alkali for pH Adjustment & Saponification orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Can TCS Industries Limited support Potassium Hydroxide -– Strong Alkali for pH Adjustment & Saponification supply to South America?
Yes. We support B2B buyers in Argentina, Colombia, Chile, Peru, Ecuador, Uruguay, Bolivia, Brazil, Paraguay, Venezuela, Guyana and Suriname, subject to route and document review.
Do you support Europe, the United Kingdom, Australia, New Zealand, Mexico and Canada?
Yes. These destinations can be reviewed for project supply, import documents, packaging and logistics planning before quotation.
Is Potassium Hydroxide classified as dangerous goods for transport?
Yes. KOH is classified as UN 1813 (solid) or UN 1814 (solution), Class 8 Corrosive under ADR/IMDG/DOT regulations. Packaging must be UN-rated. Transport documentation (DGD) is required. TCS arranges compliant packaging and shipping documentation for all corrosive shipments.
What is the difference between KOH and NaOH?
Potassium Hydroxide (KOH, CAS 1310-58-3) produces softer, more soluble potassium soaps — used for liquid soaps and shampoos. Sodium Hydroxide (NaOH, CAS 1310-73-2) produces harder sodium soaps — used for bar soaps. KOH is also preferred for alkaline battery electrolytes. Specify which alkali is required.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is Potassium Hydroxide -– Strong Alkali for pH Adjustment & Saponification packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
Is Potassium Hydroxide used in pharmaceutical manufacturing?
Yes. KOH is monographed in USP-NF and Ph.Eur. and listed in the FDA IID. It is used as a pH adjuster and alkalizing agent in parenteral solutions, oral liquids, topical preparations and capsule shell formulations. Pharmaceutical-grade material must meet pharmacopoeial purity limits.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.