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Propylene oxide 75-56-9


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  • 75-56-9

  • bosschemical

  • 75-56-9

Propylene oxide Basic information
Product Name: Propylene oxide
CAS: 75-56-9
MW: 58.08
EINECS: 200-879-2
Mol File: 75-56-9.mol
Propylene oxide Chemical Properties
Melting point -112 °C
Boiling point 34 °C(lit.)
density 0.83 g/mL at 25 °C(lit.)
vapor density 2 (vs air)
vapor pressure 29.43 psi ( 55 °C)
refractive index n20/D 1.366(lit.)
Fp −35 °F
storage temp. 2-8°C
solubility 425-450g/l
form Liquid
color Clear
Odor Ethereal; characteristic; sweet, alcoholyc; like natural gas.
explosive limit 1.9-36%(V)
Water Solubility 40 g/100 mL (20 ºC)
FreezingPoint -112.13℃
Merck 147,856
BRN 79763
Henry's Law Constant Not an environmentally important parameter because propylene oxide reacts rapidly with water
Exposure limits TLV-TWA 50 mg/m3 (20 ppm) (ACGIH), 240 mg/m3 (100 ppm) (OSHA); IDLH 2000 ppm.
Stability: Stable. Incompatible with acids, bases, oxidizing agents, copper, copper alloys, brass, bronze, iron, metal chlorides, peroxides and a wide variety of other materials. Reacts with compounds containing labile hydrogen. Extremely flammable - note low boiling point, low flash point and very wide explosion limits. Moisture sensitive.
LogP 0.03
CAS DataBase Reference 75-56-9(CAS DataBase Reference)
NIST Chemistry Reference Propylene oxide(75-56-9)
IARC 2B (Vol. Sup 7, 60) 1994
EPA Substance Registry System Propylene oxide (75-56-9)



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