Propylene Glycol

Melting point

-60 °C

Boiling point

187 °C(lit.)

density

1.036 g/mL at 25 °C(lit.)

vapor density

2.62 (vs air)

vapor pressure

0.08 mm Hg ( 20 °C)

FEMA

2940 | PROPYLENE GLYCOL

refractive index

n20/D 1.432(lit.)

Fp

225 °F

storage temp.

Store at RT.

pka

14.49±0.20(Predicted)

form

Viscous Liquid

color

APHA: ≤10

Specific Gravity

1.038 (20/20℃)1.036～1.040

PH

6-8 (100g/l, H2O, 20℃)

explosive limit

2.4-17.4%(V)

Water Solubility

miscible

Sensitive

Hygroscopic

JECFA Number

925

Merck

14,7855

BRN

1340498

Item

Pharm. Grade

Ind. Grade

Appearance

Colorless, viscous and transparent liquid

Colorless, viscous and transparent liquid

PG Content, % (wt)

≥99.8

≥99.5

Moisture, % (wt)

≤0.2

≤0.2

olor No, (Pt-Co)

≤10

≤10

Relative density,d2020g/cm3

1.035-1.039

1.035-1.039

Index of retraction, (nD20)

1.433-1.435

1.433-1.435

Acidity (as acetic acid), %

≤0.20

≤0.20

Chloride, %(wt)

≤0.007

≤0.007

Distillation rang,＞95% (Vol)

184.0-189.0

-

Distillation volume, Vol%

≥95

-

Sulfate, %(wt)

≤0.006

-

Heavy metals, ppm

≤5

-

Organic Volatile impurity Chloroform, µg/g

≤60

-

Organic Volatile impurity 1.4 dioxane, µg/g

≤380

-

Organic Voltile impurity methylene chloride,µg/g

≤600

-

Organic Voltile impurity trichloroethylene, µg/g

≤80

-