Import Food Grade Copper Sulfate Pentahydrate 99.5% — Buy in Bulk from Supplier in China

The product is food‑grade copper sulfate pentahydrate with a declared purity of 99.5 %. Its chemical formula is CuSO4·5H2O and the molecular weight is 249.7 g·mol⁻¹, identified by CAS 7758‑99‑8. Physically it appears as a dark‑blue triclinic crystal or a blue crystalline powder that releases a metallic odour. The supplier ships the material in 25 kg bags that have a plastic inner liner and a reinforced woven outer sack.

Copper sulfate is highly soluble in water, forming an acidic solution whose pH is approximately 4.17 at a 0.1 mol L⁻¹ concentration, and it also dissolves readily in glycerol and dilute ethanol while remaining insoluble in absolute ethanol. The compound slowly weathers when exposed to dry air, a characteristic noted in the technical data. In the food sector it is authorised as a nutritional supplement, antimicrobial and firming agent, and it can be used as a processing aid in a range of formulations. Typical industry practice grades the material as food grade and stores it under dry, ventilated conditions away from moisture.

Potential buyers include food manufacturers, feed producers and agricultural supplement distributors who require a reliable source of copper ions. The product is packed in sealed 25 kg bags to protect against moisture, but the supplier advises confirming the minimum order quantity and any required certifications before placing an order. Shipping is performed in dry containers with the recommendation to keep the bags separate from poisonous substances during transport. Payment terms, Incoterms and lead times are not disclosed in the listing and should be clarified with the supplier during negotiation.

Lianyungang Longtaiwei Food Ingredients Co., Ltd is located in the B District of Liangyungang City, Guannan Economic Development Zone, Longtaiwei Road No. 1, Lianyungang, China, postal code 222500. The company is listed with a harbor trust tier, although the response rate shown in the platform data is 0 % and no average response time is recorded.

The supplier’s profile does not disclose production capacity, years in operation or client references. It states that the chemical is packed with a plastic inner layer and a compound plastic woven outer bag, and that it should be stored in a dry, ventilated warehouse away from water and moisture during transport. No additional certifications or quality‑management systems are mentioned in the available data.