Understanding purity thresholds, pharmacopeial testing monographs, and industry-specific selection criteria for chemical procurement.
Both USP (United States Pharmacopeia) Grade and Food Grade Propylene Glycol share the same CAS number (57-55-6) and high purity (typically ≥99.8%), but key differences exist in regulatory testing, certification, and intended application.
USP Grade is subjected to stringent pharmacopeial testing monographs including assay purity, chloride/sulfate testing, heavy metals limit testing, and residual solvent analysis. It is mandatory for pharmaceutical tablet coatings, oral syrups, topical ointments, and injectable preparations.
Food Grade Propylene Glycol complies with FCC (Food Chemicals Codex) and FSSAI standards. It is ideal for food flavor solvent carriers, bakery humectants, and secondary coolant loops in dairy and brewery chiller tanks.
Skylon Global supplies both USP Grade and Food Grade Propylene Glycol with complete batch COA documentation across Maharashtra.
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