|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.)|
|Odor||Ethereal; characteristic; sweet, alcoholyc; like natural gas.|
|Water Solubility||40 g/100 mL (20 ºC)|
|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.|
|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)|
|RIDADR||UN 1280 3/PG 1|
|Autoignition Temperature||430 °C|
|HS Code||2910 20 00|
|Hazardous Substances Data||75-56-9(Hazardous Substances Data)|
|Toxicity||LD50 orally in rats: 1.14 g/kg (Smyth)|
Propylene oxide CAS:75-56-9
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