Bleaching powder uses price

The most critical factor is the Available Chlorine content, which typically ranges from 30% to 70%. For water treatment, a higher concentration (65-70% Calcium Hypochlorite) is preferred for efficiency. You must also verify the moisture content (usually <3%) to ensure stability and the particle size (granularity) to match your specific application, whether it be water purification, textile bleaching, or surface disinfection.

Suppliers should provide MSDS (Material Safety Data Sheet) and COA (Certificate of Analysis) for every batch. For water treatment applications, look for NSF/ANSI 60 certification. If exporting to the EU, REACH compliance is mandatory. Ensure the product meets UN3077 or UN1748 classifications for the transport of dangerous goods to avoid customs seizures.

Bleaching powder is inherently unstable and decomposes over time, losing available chlorine. High-stability grades (often achieved through specialized granulation) command a 10-15% price premium but offer a longer shelf life. Buyers should ensure the product is stored in cool, dry, and well-ventilated warehouses, away from acids and organic materials, to prevent hazardous chemical reactions.

Industrial Grade (30-35%) is commonly used in the textile and paper industries for whitening fibers. High-Efficiency Grade (65-70%) is the standard for swimming pool sanitation and municipal water treatment. For aquaculture, buyers should seek grades that leave minimal residue to protect aquatic life.

Bleaching powder is classified as a Class 5.1 Oxidizer, making it a hazardous material (HazMat) for shipping. The primary risk is improper packaging leading to moisture ingress or combustion. Ensure the supplier uses UN-approved plastic drums with airtight seals. You must also account for higher freight costs and the requirement for Dangerous Goods (DG) declarations at both departure and arrival ports.

Focus on the price per unit of available chlorine rather than the price per ton of powder. Request a pre-shipment inspection (PSI) by third parties like SGS or Intertek to verify the chlorine percentage before final payment. For large-scale buyers, negotiating tiered pricing based on annual volume rather than individual spot orders can result in 5-8% cost savings.

Always use secure payment terms such as Letter of Credit (L/C) or trade assurance services provided by reputable platforms like Made-in-China.com. This ensures that funds are only released upon verification of the Bill of Lading and Quality Inspection Certificate. Avoid 100% upfront T/T payments for new suppliers in the chemical sector.

Provide your customs broker with the HS Code (usually 2828.10 or 2828.90) and the MSDS well in advance. Be aware of anti-dumping duties that some countries (like India or the USA) may impose on calcium hypochlorite from specific regions. Ensure all labels are bilingual and include necessary hazard pictograms as per the GHS (Globally Harmonized System).