Import Copper Sulfate — Buy in Bulk from Supplier in China

Copper sulfate pentahydrate supplied by Lianyungang Longtaiwei Food Ingredients Co., Ltd is a blue crystalline chemical with the formula CuSO4·5H2O and a molecular weight of 249.7 g mol⁻¹. Its CAS number is 7758‑98‑7 and it appears as dark‑blue triclinic crystals or powder. The material dissolves readily in water and acidic solutions, producing a 0.1 mol L⁻¹ solution with a pH of approximately 4.17 at 15 °C. The supplier states a CuSO4·5H2O content of 98.0 % to 102.0 % w/w.

The grade conforms to Chinese standard GB 29210‑2012, which limits hydrogen sulfide to 0.3 % w/w, iron to 0.01 % w/w, lead to ≤4 mg kg⁻¹ and arsenic to ≤3 mg kg⁻¹. Such specifications are typical for industrial copper sulfate used in agricultural and processing applications. The product is delivered in 25 kg polyethylene‑lined bags placed inside woven outer bags, a packaging format standard for bulk chemicals.

Typical end‑users include feed manufacturers, agricultural chemical formulators, pharmaceutical processors and water‑treatment companies. The supplier recommends storage in a dry, ventilated warehouse, stacked separately from other toxic items, and ships the bags in protective outer packaging. Buyers should request the supplier’s minimum order quantity, lead‑time and preferred Incoterms before confirming the purchase.

Lianyungang Longtaiwei Food Ingredients Co., Ltd is situated at No. 1 Longtaiwei Road, B District, Guannan Economic Development Zone, Lianyungang, China, 222500. The company is listed with a harbour trust tier, indicating a verified trade credential on the platform. Its response metrics show a response rate of 0 % and no average response time recorded, suggesting that communication may require proactive follow‑up. The firm focuses on supplying food‑grade chemical ingredients, including copper sulfate.

The copper sulfate is packaged in 25 kg polyethylene‑lined bags inside woven outer bags and is stated to meet GB 29210‑2012 impurity limits. No additional certifications such as ISO or HACCP are mentioned, so importers should verify any required compliance directly with the supplier. The supplier’s public profile does not disclose production capacity or export history.