Propylene Glycol (PG)

Ⅰ,Characteristics and Applications
    Propylene Glycol, with molecular formula C₃H₈O₂ and structural formula ,is colorless transparent liquid. Its melting point is -59.5℃ and boiling point is 187.3℃,and can be mixed or solvent with water, alcohol and several organic agent. Propylene glycol is a raw material for producing unsaturated of plasticizer, dehydrant, surface active agent, firming agent and binder. Moreover, PG can be used as antiseptics, ice inhibitor and moisture preserver of tobacco.

 

Ⅱ,Quality Indexes (Pharmaceutical grade accords with the standards of CP2000, USP and BP QJ/YSTL-02-29-1999)

 (The quality system accords with GB/T19001-2000idt ISO9001:2000, and the environmental management system accords with ISO14001:1996)
　

Items	Units	Pharmaceutical  Grade	Food Grade	First Grade	Qualified Grade
Purity	%	≥99.8	≥99.6	≥99.5	≥99.0
Water	%	≤0.2	≤0.2	——	——
Initial boiling point	℃	182	180	——	——
Drying point	℃	189	191	——	——
Distillation Range	℃	184~189	183~190	183~190	182~190
Color(Pt-Co)	——	10	10	15	25
Ash	%	≤0.01	≤0.01	≤0.01	≤0.02
Heavy Metal（Measured with  Pb）	ppm	6	6	——	——
Arsenic	ppm	5	5	——	——
chlorides（Measured with Cl-）	ppm	10	10	——	——
Sulphates（Measured with SO42-）	ppm	10	10	——	——
Density	(25℃)g/cm3	1.037~1.039
Appearance	Colorless, transparent and sticky liquid

Ⅲ,Package

  Packed in iron or high density drums of 200±0.5kg net each

Ⅳ,Storage and Transportation

  Stored in cool, dry and ventilated places, kept far from fire, and transported as a common chemical.