For any B2B buyer in the chemical, pharmaceutical, or food ingredient sectors, a thorough understanding of product specifications is crucial before making a purchase. Copper Gluconate (CAS 527-09-3) is no exception. This vital compound, used extensively as a nutritional supplement and food additive, requires stringent quality control to ensure efficacy and safety. This guide aims to break down the essential specifications that buyers should consider when sourcing Copper Gluconate from manufacturers and suppliers.

The primary characteristic buyers look for is the Appearance. Copper Gluconate is typically described as a light blue or blue-green crystal or powder. Its visual presentation is an initial indicator of its quality and form. A consistent, correct appearance signals that the product has been processed and stored correctly by the manufacturer.

The Assay, or purity level, is arguably the most critical specification. For Copper Gluconate, this typically ranges from 98.0% to 102.0%. This percentage indicates the concentration of the active compound. Buyers should always prioritize suppliers who guarantee this level of purity, as it directly impacts the effectiveness of the final product, whether it's a dietary supplement or a pharmaceutical formulation. Purchasing from a reputable manufacturer in China often ensures adherence to these high purity standards.

Beyond the main compound, controlling impurities is vital. Key impurities to monitor include Sulfate (typically ≤0.05%), Chloride (≤0.07%), Arsenic (≤3 ppm), and Lead (≤25 ppm). High levels of these substances can render the product unsuitable for food or pharmaceutical use and may pose health risks. Buyers should request Certificates of Analysis (CoA) from their suppliers, detailing these impurity levels, to verify compliance. A dedicated manufacturer will readily provide this documentation.

Another important parameter is the presence of Reducing substance, which is usually limited to 1.0%. This indicates the absence of excessive byproducts from the manufacturing process. The physical properties, such as solubility, are also key; Copper Gluconate is easily soluble in water and insoluble in ethanol, a characteristic important for formulation flexibility.

When you decide to buy Copper Gluconate, ensure your supplier provides comprehensive documentation for all these specifications. Working with a manufacturer that clearly lists these details and can provide samples for testing is a sound procurement strategy. For those looking to purchase Copper Gluconate in bulk, understanding these specifications will help you secure a high-quality product that meets all regulatory and application requirements. Partnering with a trusted supplier in China can provide access to competitively priced, high-specification Copper Gluconate.