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Propylene oxide Structure

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.)
Flash point −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  14,7856
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 0.030
Substances Added to Food (formerly EAFUS) PROPYLENE OXIDE
CAS DataBase Reference 75-56-9(CAS DataBase Reference)
EWG's Food Scores 7-10
FDA UNII Y4Y7NYD4BK
Proposition 65 List Propylene Oxide
IARC 2B (Vol. Sup 7, 60) 1994
NIST Chemistry Reference Propylene oxide(75-56-9)
EPA Substance Registry System Propylene oxide (75-56-9)
Pesticides Freedom of Information Act (FOIA) Propylene oxide

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H224-H302-H311+H331-H319-H335-H340-H350
Precautionary statements P210-P233-P280-P303+P361+P353-P308+P313-P403+P233
Hazard Codes  F+,T
Risk Statements  45-46-12-20/21/22-36/37/38
Safety Statements  53-45
RIDADR  UN 1280 3/PG 1
WGK Germany  3
RTECS  TZ2975000
Autoignition Temperature 430 °C
TSCA  Yes
HS Code  2910 20 00
HazardClass  3
PackingGroup  I
Hazardous Substances Data 75-56-9(Hazardous Substances Data)
Toxicity LD50 orally in rats: 1.14 g/kg (Smyth)
IDLA 400 ppm
NFPA 704:
4
3 2

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Propylene oxide Chemical Properties,Usage,Production

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