Bleaching power

Buyers must prioritize the Available Chlorine content, typically ranging from 60% to 70% for high-grade Calcium Hypochlorite. Ensure the product has low moisture content (usually <3%) to prevent decomposition and maintain stability. For water treatment, verify the solubility rate and ensure the granularity (mesh size) matches your dosing equipment to prevent clogging.

As a chemical product, it must have a valid MSDS (Material Safety Data Sheet). For water purification, look for NSF/ANSI Standard 60 certification. For European markets, REACH registration is essential. Ensure the manufacturer complies with ISO 9001 for quality management and ISO 14001 for environmental standards to ensure consistent chemical potency.

Bleaching powder is a strong oxidant and corrosive material. It must be packed in UN-approved plastic drums (typically 25kg, 40kg, or 50kg) with inner plastic liners to prevent moisture ingress. The drums must be UV-resistant and feature secure locking rings to prevent leakage during transit, which could lead to hazardous reactions.

It is widely used in swimming pool disinfection, textile bleaching, and industrial wastewater treatment. Stability is critical; buyers should request stability test reports showing the annual chlorine loss rate. High-quality stable bleaching powder should lose less than 10% of its active chlorine per year when stored in cool, dry conditions.

Bleaching powder (Calcium Hypochlorite) is classified under IMDG Class 5.1 (Oxidizing Substances), UN No. 1748/2880. You must use a freight forwarder experienced in Dangerous Goods (DG). Ensure the supplier provides a 'Certificate for Safe Transport of Chemical Goods' and a 'Container Packing Certificate'. Shipping must be away from heat sources and organic materials.

Utilize Made-in-China.com's Secured Trading Service to ensure payment is only released after shipping documents are verified. Always request a Pre-shipment Inspection (PSI) by a third party like SGS or Intertek to test the actual chlorine percentage, as 'under-spec' products are a common risk in the chemical industry.

Focus on formula customization and volume-based pricing. Ask for a tiered pricing structure (e.g., 5-10 tons vs. full container loads). Negotiate for free samples (buyer pays shipping) to conduct lab titration tests before committing to a large contract. Discuss lead times clearly, as chemical production cycles can be affected by local environmental protection inspections.

Store in a cool, well-ventilated warehouse away from direct sunlight and moisture. It must be kept strictly separate from acids, fuels, and flammable organic materials, as contact can cause spontaneous combustion or the release of toxic chlorine gas. Ensure your local facility meets local fire safety and hazardous material storage regulations.