For procurement professionals in the pharmaceutical, food, and chemical industries, understanding the precise specifications of raw materials like Calcium Citrate (CAS 813-94-5) is fundamental to ensuring product quality and regulatory compliance. Sourcing high-purity Calcium Citrate requires a keen eye for detail regarding its assay, physical characteristics, and adherence to industry standards.

Calcium Citrate, typically presented as a white powder, has a chemical identity confirmed by its CAS number 813-94-5. The most critical specification for buyers is the assay, which indicates the percentage of pure Calcium Citrate present. Reputable manufacturers, often referred to as a Calcium Citrate assay 97.5% manufacturer, guarantee a high purity level, ensuring consistency in formulations. This high assay is particularly vital when the compound is used as an Active Pharmaceutical Ingredient (API) or a key component in dietary supplements.

Beyond the assay, several other parameters are crucial for quality assurance. These include Loss on Drying (LOD), which measures the moisture content and typically ranges from 10.0% to 13.3%, and limits for impurities such as heavy metals, arsenic, and acid-insoluble substances. Compliance with pharmacopoeial standards, such as USP35, is often a benchmark for pharmaceutical applications. Buyers looking to buy Calcium Citrate powder online should always request a Certificate of Analysis (CoA) that details these specifications.

When seeking a Calcium Citrate supplier in China or any other region, it's important to evaluate their adherence to these quality parameters. A trustworthy Calcium Citrate manufacturer will clearly state their product's compliance with relevant standards and provide transparent documentation. This due diligence is especially important when comparing the pharmaceutical grade Calcium Citrate price, as lower prices may sometimes reflect lower purity or compliance levels.

For companies that require Calcium Citrate for food applications, food-grade certifications are paramount, in addition to meeting purity and assay requirements. While pharmaceutical standards like USP35 often serve as a strong indicator of quality, specific food regulations must also be met. Buyers aiming to purchase USP35 standard Calcium Citrate for sale should confirm that the supplier can meet all applicable requirements for their intended use.

The particle size and form of Calcium Citrate can also be important specifications, affecting its dissolution rate and processability in certain applications. Some manufacturers offer fine granular forms for improved handling and formulation. Understanding these specifications allows buyers to select the most appropriate product for their manufacturing process.

In summary, a buyer's guide to Calcium Citrate specifications should emphasize the assay, impurity profiles, and compliance with standards like USP35. By diligently reviewing product documentation and selecting reputable manufacturers and suppliers, businesses can ensure they are obtaining high-quality Calcium Citrate that meets all their application needs and regulatory obligations.