Home Categories Organic Chemistry (±)-Propylene oxide
A4226014

(±)-Propylene oxide , 99% , 75-56-9

Synonym(s):
(±)-Methyloxirane;(±)-Propylene oxide;1,2-Epoxypropane;1,2-Epoxypropane, Methyloxirane;1,2-Propylene oxide

CAS NO.:75-56-9

Empirical Formula: C3H6O

Molecular Weight: 58.08

MDL number: MFCD00005126

EINECS: 200-879-2

Update time: 2022-07-08

PRODUCT 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

Description and Uses

Propylene oxide is an allergic and irritant agent, used as a solvent and raw material in the chemical industry as starting material and intermediate for a broad spectrum of polymers.

Chemical intermediate in preparation of polyethers to form polyurethanes; in preparation of urethane polyols and propylene and dipropylene glycols; in preparation of lubricants, surfactants, oil demulsifiers. As solvent; fumigant; soil sterilant.

Safety

Symbol(GHS) 
GHS02,GHS06,GHS08
Signal word  Danger
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
Toxicity LD50 orally in rats: 1.14 g/kg (Smyth)
IDLA 400 ppm

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