Propylene Glycol Propylene Glycol tech grade Structural formula:C3H8O2 Specification: Relative Molecular weight : 76.09 CAS No.: 57-55-6 Quality indexes: Item Index Color, APHA Max. 10 Content% Min. 99.0 Moisture% Max. 0.2 Specific Gravity (20/20) 1.035-1.039 Free acid,(CH3OOH),ppm Max. 75 Residue, ppm Max. 80 Distillation range>95% 184-190 Index of refraction 1.433-1.435 Packing:In 215kgs galvanized iron drums,17.2tons/20’fcl. In flexitank, 22tons/20’fcl. In IBC drums, 20tons/20’fcl. In ISO tank, 23.6tons/20’fcl. Other packing: According to the client’s requirement. Application of propylene glycol tech grade: Anti-freezen: PG is one of the most important raw material of antifreeze. Solvent: PG is used as solvent in resin, detergent, painting, pesticide and dope industry, etc Propylene Glycol pharma grade Specification: Relative Molecular weight: 76.09 CAS No.: 57-55-6 Quality indexes: Item Index Color Tone (APHA) 10 max Water,% 0.2 max Specific gravity (20/25 °C) 1.0350~1.0410 Refractive index(25°C) 1.4307~1.4317 Distillation range (L), °C 184.0~189.0 Distillation range (U),°C 184.0~189.0 Distillation volume, Vol% 95 min Identification passed Acidity, ml 0.20 max Chloride, % 0.007 max Sulfate, % 0.006 max Heavy metals, ppm 5 max Residue on ignition, % 0.07 max Organic Volatile impurity Chloroform, µg/g 60 max Organic Volatile impurity 1.4 dioxane, µg/g 380 max Organic Voltile impurity methylene chloride,µg/g 600 max Organic Voltile impurity trichloroethylene, µg/g 80max Assay, GLC% 99.5 min Packing:In 215kgs galvanized iron drums,17.2tons/20’fcl. In flexitank, 22tons/20’fcl. In IBC drums, 20tons/20’fcl. In ISO tank, 23.6tons/20’fcl. Other packing: According to the client’s requirement. Application of propylene glycol pharma grade: Cosmetic: PG could be used as humidor, emollient and solvent in cosmetic and industry. Pharmacy: PG is used as the carrier of medicine and agent for particle medicine. Food: PG is used as solvent of perfume and edible pigment,emollient in food packing,and anti-adhesive. Tobacco: Propylene glycol is used as tobacco flavor, lubricated solvent,and preservative.

Taking customer satisfaction as the goal in past ten years, Shijiazhuang Longze Chemical Co., Ltd. has experienced diversified and rapid development. At present, our business scope includes custom synthesis of chemicals and pharmaceutical excipients, contract processing, and trade of chemicals, plastic products and waterproof materials; we are a specialized company in the research, development and production of pharmaceutical excipients and specialty chemicals.
Longze attaches great significance to honest business and construction of brand. Committing to such idea of "providing core values for the upstream and downstream suppliers and customers in this industry", we keep introducing talents and seeking for a way of getting sustainable development. We strive to create society more values and provide customers with the most quality and efficient services.
Looking to the future, Longze will take China as base to expand business into global market, and strive to establish long-term cooperative relations with professional companies all around the world. With harmonious and enterprising spirit and professional & focusing attitude, we keep making innovations and seeking to be a outstanding company, and working hard to make Longze a competitive, united, honest and sustainable enterprise.