Welcome to Shandong Zhonglian Chemical Co., Ltd. Equity Code:880747
02
2026
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05
Silicon Dioxide USP
Zhongqi (Shandong) Silicon Materials Co., Ltd. offers silicon dioxide that fully complies with the United States Pharmacopeia - National Formulary (USP-NF) standards.
USP-NF Compliant Silicon Dioxide for Pharmaceutical Use
Zhongqi (Shandong) Silicon Materials Co., Ltd. offers silicon dioxide that fully complies with the United States Pharmacopeia - National Formulary (USP-NF) standards. Our USP-grade silicon dioxide is trusted by pharmaceutical manufacturers worldwide for its consistent quality and reliable performance.
USP-NF Specifications Compliance:
- SiO₂ content: NLT 99.0% and NMT 100.5% (after ignition at 1000°C for 2 hours)
- Loss on drying: NMT 5.0%
- Loss on ignition: NMT 8.5%
- Heavy metals: NMT 10 ppm
- Arsenic: NMT 3 ppm
- Microbial limits: Total aerobic count ≤ 100 cfu/g, Total yeast and mold ≤ 10 cfu/g, Escherichia coli absent
Product Range:
- USP Colloidal Silicon Dioxide (ZLXIDE™ USP Series)
- USP Precipitated Silicon Dioxide (ZLSIL™ USP Series)
- USP Silica Gel (ZQSIL™ USP Series)
Quality Control System:
Our USP-grade products undergo rigorous testing in our in-house analytical laboratory, which is equipped with advanced instrumentation. We perform all USP-required tests on each batch, including identification, assay, impurities, and specific tests, to ensure full compliance with USP-NF monographs.
Documentation Support:
We provide comprehensive regulatory documentation for our USP-grade silicon dioxide, including Drug Master Files (DMFs) where applicable, to support our customers' regulatory submissions worldwide.
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Jinan City, Shandong Province,China
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Guangzhou City, Guangdong Province
