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Propylene Glycol - USP

CAS #: 57-55-6
Property Unit: Test Method: Specification:
Acidity as Acidity Acid % by wt HOC-0210 0.02 Maximum
Appearance   Visual Clear and Viscous Liquid
Assay, as PG a dry basis % by wt HOC-0540 99.5 Minimum
Chlorides as CL ppm HOC-0221 0.5 Maximum
Color (APHA) PT-CO HOC-0641 10 Maximum
Heavy Metals as Pb ppm HOC-0275 5 Maximum
Iron ppm HOC-0290 0.5 Maximum
Odor   HOC-0610 Practically Odorless
Suspended Matter   HOC-0171 Subst. Free
Water % by wt HOC-0316 0.20 Maximum
Arsenic as AS ppm HOC-0242 1 Maximum
CONEG metals as Cd, Hexavalent Cr, Pb & Hg   ASTM D3335 Passes
IBP (@ 760 mm Hg) °C HOC-0154 186 Minimum
DP(@ 760 mm Hg) °C HOC-0154 189 Maximum
IR Spectrum   HOC-0411 Passes
Organic Volatile Impurities   USP 467 No OVI
Residue on Ignition % by wt HOC-0140 0.005 Maximum
Solubility ( @25 in all proportions with water, acetone   HOC-0160 Miscible
Specific Gravity (@20/20)   HOC-0132 1.0377 - 1.0389
Specific Gravity (@25/25)   HOC-0132 1.0352 - 1.0364
Sulfate % by wt HOC-0225 0.006 Maximum