Overview
Pharmaceutical grade glycine is a purified form of the simplest amino acid, meeting strict quality standards for medical use. It serves as a fundamental building block in protein synthesis and plays critical roles in metabolic processes. As a pharmaceutical excipient, it functions as a buffering agent, stabilizer and sweetener in injectable formulations and oral medications. Its high purity (>99%) distinguishes it from industrial or food-grade variants, with stringent limits on heavy metals and microbial contamination.
Physical and Chemical Properties
This crystalline powder exhibits excellent water solubility (25 g/100 mL at 25°C) with a sweet taste. The zwitterionic nature of glycine gives it unique pH-buffering capabilities, particularly effective in the physiological pH range. Thermal decomposition begins around 240°C without melting. Its molecular structure allows participation in various biochemical reactions, including serving as a neurotransmitter in the central nervous system. The pharmaceutical grade maintains consistent particle size distribution (typically 20-100 mesh) for optimal formulation performance.
Main Applications
In IV solutions, glycine acts as an irrigation fluid component in urological procedures. It's widely used as a diluent in antibiotic preparations and as a pH adjuster in parenteral nutrition formulations. The supplement industry utilizes it in amino acid infusion therapies and sports nutrition products. Emerging applications include its use as a cryoprotectant in biopharmaceutical storage and as a component in cell culture media for vaccine production.
Safety and Storage
While generally safe, workplace exposure limits are typically set at 10 mg/m³ for inhalable dust. Proper ventilation should be maintained during handling to prevent airborne particulate accumulation. Storage requires moisture-proof containers at ambient temperature (15-30°C). Bulk quantities should be palletized with proper segregation from strong oxidizers. Shelf life typically exceeds 3 years when stored correctly in original packaging.
B2B Procurement Guide
Pharmaceutical buyers should prioritize suppliers with current GMP certification and batch-specific CoAs verifying USP/EP/JP compliance. Key specifications to validate include: assay (99.0-101.0%), residue on ignition (<0.1%), and heavy metal content (<10 ppm). For large-volume purchases (tonnage quantities), consider regional production facilities to minimize logistics costs. Technical agreements should include provisions for stability testing data and regulatory support documentation. Many manufacturers offer toll processing and customized particle size solutions.
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