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Propylene glycol Structure

Propylene glycol

Chemical Properties

Melting point -60 °C (lit.)
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)
refractive index  n20/D 1.432(lit.)
FEMA  2940 | PROPYLENE GLYCOL
Flash point 225 °F
storage temp.  Store at +5°C to +30°C.
solubility  Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
pka 14.49±0.20(Predicted)
form  Viscous Liquid
Specific Gravity 1.038 (20/20℃)1.036~1.040
color  APHA: ≤10
PH 6-8 (100g/l, H2O, 20℃)
Odor at 100.00 %. odorless very slight alcoholic
Odor Type odorless
explosive limit 2.4-17.4%(V)
Water Solubility  miscible
Sensitive  Hygroscopic
JECFA Number 925
Merck  14,7855
BRN  1340498
Dielectric constant 32.0
InChIKey DNIAPMSPPWPWGF-UHFFFAOYSA-N
LogP -0.92
CAS DataBase Reference 57-55-6(CAS DataBase Reference)
NIST Chemistry Reference Propylene glycol(57-55-6)
EPA Substance Registry System Propylene glycol (57-55-6)

Safety Information

Safety Statements  24/25
WGK Germany  1
RTECS  TY2000000
Autoignition Temperature 779 °F
TSCA  Yes
HS Code  29053200
Hazardous Substances Data 57-55-6(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 19400 - 36000 mg/kg LD50 dermal Rabbit 20800 mg/kg

MSDS

Usage And Synthesis

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