Potassium hydroxide 90%

Buyers must prioritize the purity level (min 90%) and the concentration of impurities. Key parameters include low Carbonate (K2CO3) content (typically <0.5%), and trace metal limits for Chloride (Cl), Iron (Fe), and Heavy Metals. For liquid applications, ensure the solubility and clarity of the solution meet your specific industrial grade requirements.

Potassium Hydroxide 90% is widely used in biodiesel production as a catalyst, soap and detergent manufacturing (soft soaps), and as an electrolyte in alkaline batteries. It is also critical in chemical synthesis for potassium salts and in agriculture for liquid fertilizers. Ensure the grade (Industrial vs. Food Grade) matches your downstream application to avoid contamination.

As a hazardous chemical, it must have a valid Material Safety Data Sheet (MSDS/SDS) compliant with GHS standards. For the EU market, REACH registration is essential. If used in food processing, look for ISO 22000 or HACCP certifications. Always verify the Certificate of Analysis (COA) against the actual batch number to ensure consistency with ISO 9001 quality management systems.

Flakes are the most common and cost-effective form for bulk industrial use, offering a high surface area for rapid dissolution. Pellets are often preferred for laboratory or precision dosing due to lower dust generation. Note that KOH is highly hygroscopic, meaning it absorbs moisture from the air; therefore, hermetic sealing in 25kg PP/PE bags or 1000kg IBC tanks is non-negotiable.

Potassium Hydroxide is classified under UN Number 1813 (Solid) or 1814 (Liquid), Class 8 Corrosive substances. It requires UN-approved packaging with clear hazard labeling. When shipping from China, ensure the supplier provides a 'Dangerous Goods Transport Package Use Appraisal Report' to clear customs smoothly. Sea freight is the standard method, but it must be stored away from acids and organic materials.

Utilize Made-in-China.com's Secured Trading services to protect your payment until shipping documents are verified. Conduct third-party pre-shipment inspections (such as SGS or BV) to test the actual KOH concentration, as '90% grade' can sometimes fluctuate. Avoid suppliers who cannot provide a verified factory audit report or those who refuse to send pre-production samples for lab testing.

Chemical prices are heavily influenced by raw material costs (Potassium Chloride) and energy prices. Negotiate based on volume tiers (e.g., 20ft FCL vs. 100 tons) and consider long-term contracts to hedge against price spikes. Ask for FOB (Free On Board) pricing to maintain control over your logistics costs, as shipping rates for hazardous goods can vary significantly between carriers.

Ensure your warehouse is equipped for Class 8 Corrosives, featuring acid-resistant flooring and proper ventilation. Workers must use Personal Protective Equipment (PPE), including alkali-resistant gloves and face shields. Because KOH reacts exothermically with water, storage areas must be strictly dry to prevent accidental heat generation or chemical burns.