I have found results from400+products and200+suppliers about70% calcium hypochlorite
Buyers must prioritize the Available Chlorine content, which should be strictly ≥70%. Additionally, check the moisture content (typically 5.5%–10% for hydrated form to ensure stability) and the particle size distribution (granules vs. tablets) to match the specific application. For water treatment, a low insolubility rate (<5%) is critical to prevent equipment clogging.
As a Class 5.1 Oxidizer, the product must have a valid MSDS (Material Safety Data Sheet) and COA (Certificate of Analysis). For drinking water treatment, look for NSF/ANSI 60 certification. For European markets, REACH registration is essential, while US-bound goods must comply with EPA registration requirements for disinfectants.
It is primarily used for swimming pool disinfection, municipal water treatment, and industrial bleaching. The functional requirement is high oxidizing power to eliminate bacteria and algae. Buyers should ensure the product is hydrated (Process: Sodium Process) rather than the Calcium Process if they require higher stability and lower impurity levels.
While 70% concentration has a higher unit price than 65%, it offers lower shipping costs per unit of active chlorine and reduced storage footprint. Calculate the cost per kg of available chlorine rather than the cost per drum to determine true value. Bulk orders exceeding 20 metric tons (1x20' FCL) typically trigger significant volume discounts.
Calcium Hypochlorite is classified under UN 2880 (Hydrated). It requires IMDG-compliant packaging (usually IIP-rated plastic drums). You must ensure the supplier provides a 'Dangerous Goods Declaration' and uses specialized DG containers. Avoid shipping during peak summer heat if possible, as high temperatures can lead to thermal decomposition.
Utilize Made-in-China.com's Secured Trading services to protect your payment. Always request a pre-shipment inspection (PSI) by a third party like SGS or Intertek to verify the chlorine percentage and packaging integrity before the balance payment is released. This prevents the risk of receiving 'under-strength' or degraded chemicals.
Negotiate based on raw material price indices (e.g., caustic soda and chlorine gas prices). Request fixed-price contracts for 6-12 months to hedge against market volatility. Additionally, ask for customized labeling (OEM) and specific drum colors to align with your local brand and regulatory labeling requirements.
Ensure all labels are in the destination country's language and include the GHS (Globally Harmonized System) pictograms. Store the product in a cool, dry, well-ventilated area away from organic materials, acids, and fuels, as contact can cause spontaneous combustion or toxic gas release.
