PROPYLENE GLYCOL (USP/PGI grade)

Properties

Unit

Sales

Speciication

Typical

Value

Test

Method

MPG Purity ,

on a dry basis

wt.%

Min. 99.5

> 99.70

ASTM E 202

Color

APHA

Max. 10.0

< 3.0

ASTM D 1290

Water

ppm

Max. 2000

< 200

ASTM E 202

Iron

ppm

Max. 0.50

< 0.10

ASTM E 394

Refractive

Index , 25℃

-

1.4300 – 1.4320

1.4315

ASTM E 1028

Distillation

Range , 1 atm

℃

185 - 190

186 - 187

ASTM D 1078

Specific Gravity , 20/20℃

-

1.0370 – 1.0390

1.0381

ASTM E 202

Chlorides

ppm

Max. 3.0

< 1.0

USP XXX

Acidity

ppm

Max. 50.0

< 10.0

ASTM E 202

Residue

ppm

Max. 30

< 10

USP XXX