Shaoxing Huawei Chemical Co., Ltd. is one of the leading manufacturers and suppliers of high-purity tetrachlorophthalic anhydride (≥99.5%) in China. If you're going to buy bulk high-purity tetrachlorophthalic anhydride (≥99.5%) made in China, welcome to get pricelist and quotation from our factory. All customized products are with high quality and competitive price.

Manufactured in strict alignment with high-purity pharmaceutical intermediate industry standards and ICH Q7 guidelines for active pharmaceutical ingredient (API) production, High-purity tetrachlorophthalic anhydride (≥99.5%) guarantees a minimum purity of no less than 99.5%, with tetrachlorophthalic anhydride as its primary active component. It features tightly controlled trace impurity levels, zero irritant odor, consistent batch-to-batch physical properties, and excellent anti-deliquescence performance even in high-humidity storage environments, fully satisfying the stringent quality and safety requirements of pharmaceutical production.Its core application is as a critical cyclization intermediate in the production of high-end pharmaceutical APIs and intermediates, including but not limited to quinolone antibiotics, anti-tumor agents, and anti-inflammatory drug molecules. When integrated into the pharmaceutical synthesis process, it effectively suppresses unwanted side reactions, improves the yield and purity of target products, and enhances the long-term stability and safety compliance of final pharmaceutical formulations. Optimized for large-scale continuous pharmaceutical production, we also offer customized specification adjustment and batch consistency control solutions to meet the unique production standards and process requirements of different pharmaceutical manufacturers.

To ensure that High-purity tetrachlorophthalic anhydride (≥99.5%) fully meets the stringent quality requirements of pharmaceutical production and global regulatory standards, we have established a closed-loop, full-lifecycle quality management system (QMS) covering every link from raw material sourcing to finished product delivery. All incoming raw materials undergo strict incoming quality control (IQC) testing and must meet pharmaceutical-grade specifications before being released to production. The entire production process is executed in a dust-controlled workshop, with in-process quality control (IPQC) monitoring at every key production node to eliminate the risk of cross-contamination and impurity introduction.Each batch of finished products must pass comprehensive finished quality control (FQC) testing before leaving the factory, with strict inspection of core indicators including purity, impurity profile, trace metal content, moisture content, and anti-deliquescence performance. We provide a complete official Certificate of Analysis (CoA) for every batch, along with traceable production records, to fully verify product qualification and regulatory compliance. This zero-compromise quality control system has earned the long-term trust and recognition of over 90% of domestic GMP-certified pharmaceutical manufacturers, forming a solid foundation for sustained, stable long-term cooperation.