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Propylene glycol CAS 57-55-6

Propylene glycol is a colourless, odourless, slightly sweet viscous liquid with good hygroscopicity and solubility.It is widely used in food, medicine, cosmetics and other fields as humectant, solvent or stabiliser; it is used in industry for synthetic resin, antifreeze and so on.Its safety is high, but it should be noted that high concentration contact may cause slight irritation.
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  • 57-55-6

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  • 57-55-6

Propylene glycol Basic information
Product Name: Propylene glycol
CAS: 57-55-6
MF: C3H8O2
MW: 76.09
EINECS: 200-338-0
Product Categories: Medicine grade;INORGANIC & ORGANIC CHEMICALS;57-55-6
Mol File: 57-55-6.mol
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
Fp 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
color APHA: ≤10
Specific Gravity 1.038 (20/20℃)1.036~1.040
PH 6-8 (100g/l, H2O, 20℃)
Odor at 100.00 %. odorless very slight alcoholic
Odor Type odorless
biological source synthetic
explosive limit 2.4-17.4%(V)
Water Solubility miscible
Sensitive Hygroscopic
Merck 147,855
JECFA Number 925
BRN 1340498
Dielectric constant 32
InChIKey DNIAPMSPPWPWGF-UHFFFAOYSA-N
LogP -0.92
Surface tension 35.44mN/m at 298.15K
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)
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