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Propylene Glycol
CAS number:57-55-6
Molecular formula:C3H8O2
Molecular weight:76.09
Customs code:2905320000
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Specification

Tech Grade Standard

Pharm Grade Standard

Appearance

Colorless, transparent, viscous liquid

Content %

99.5 min

99.8 min

Chroma(platinum-cobalt)

10 Max

5 Max

Distillation range(IBP-DP)°C

184-190

184-189

Density (20/25 °C)

1.0350~1.0380

1.0350~1.0380

nD20  Refractive Index nD20

1.431-1.435

1.431-1.435

Moisture %

0.2 Max

0.1 Max

Alkalinity %

0.0020 Max

0.0020 Max

Ash %

0.01 Max

0.01 Max

Heavy metal (as Pb) ppm

--

5 Max

Arsenic (as As2O3)

--

3 Max

Chloride (as NaCl) %

--

0.0007

Sulphate (as Na2SO4) %

--

0.0006