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Propylene glycol CAS#57-55-6
Chemical Name：Propylene glycol
CAS No.:57-55-6
Appearance: Viscous Liquid
Molecular Formula：C3H8O2
Molecular weight:76.09
Sample: Available
Products Description of Propylene glycol CAS#57-55-6
1,2-Propanediol (propylene glycol, CAS 57-55-6) industrial product purity ≥ 99.5%, colorless viscous liquid almost tasteless with slight sweet smell. Melting point -59℃, boiling point 187℃. Vapor pressure 0.011kPa (20℃), relative density 1.036 (20℃). Solubility in water miscible in all proportions (25℃), miscible with most organic solvents. Stable, incompatible with strong oxidants.
Parameters
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 | n |
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 |
Optical Rotation | -0.11° (C=1.00g/100ml, CHCL3) |
biological source | synthetic |
explosive limit | 2.4-17.4%(V) |
Water Solubility | miscible |
Sensitive | Hygroscopic |
Merck | 14,7855 |
JECFA Number | 925 |
BRN | 1340498 |
Dielectric constant | 32.0 |
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) |
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 |
Product Application of Propylene glycol CAS#57-55-6
Propylene glycol is used for similar applications as other glycols.
Propylene glycol is an important raw material for unsaturated polyester, epoxy resin, and polyurethane resin. The use amount in this area accounts for about 45% of the total consumption of propylene glycol. Such unsaturated polyester is used extensively for reinforced plastics and surface coatings. Propylene glycol is excellent in viscosity and hygroscopicity and is non-toxic, and thus is widely used as hygroscopic agent, antifreeze, lubricants and solvents in the food, pharmaceutical and cosmetic industry.
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