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Propylene Oxide

Propylene Oxide structure

CAS No:
75-56-9
Chemical Name:
Propylene Oxide
Synonyms:
Oxirane,2-methyl-;Oxirane,methyl-;Propylene oxide;Propane,1,2-epoxy-;Oxypropylene;2-Methyloxirane;1,2-Epoxypropane;Propene oxide;1,2-Propylene oxide;Epoxypropane;Methyloxirane;2,3-Epoxypropane;Propylene epoxide;AD 6 (suspending agent);AD 6;Methyloxacyclopropane;Epihydrin;dl-Propylene oxide;DL-1,2-Epoxypropane;(±)-Methyloxirane;(±)-2-Methyloxirane;(±)-Epoxypropane;(±)-Propylene oxide;(±)-1,2-Epoxypropane;Propozone;rac-Propylene oxide;Chemogas NV;16033-71-9
Categories:
Organic Chemistry > Hydrocarbons and Derivatives

Description

This compound features a three-membered epoxide ring and is a colorless, volatile, low-viscosity liquid with a sharp, ether-like odor. It has a low boiling point (34°C), is highly flammable, and mixes well with water, ethanol, and ether. The strained ring structure makes it highly reactive.

Propylene Oxide Basic Attributes

Molecular Weight：

58.07910

Exact Mass：

58.08

EC Number：

200-879-2

HScode：

2910200000

Characteristics

PSA：

12.53000

XLogP3：

0.40510

Appearance：

Clear Liquid

Density：

0.8 g/cm³

Melting Point：

-112.13 °C

Boiling Point：

34.23 °C

Flash Point：

-37ºC

Refractive Index：

1.365-1.367

Water Solubility：

H2O: 40 g/100 mL (20 ºC);425-450g/l

Storage Conditions：

Flammables area

Vapor Pressure：

29.43 psi ( 55 °C)

Vapor Density：

2 (vs air)

Toxicity：

LD50 orally in rats: 1.14 g/kg (Smyth)

Flammability characteristics：

Class IA Flammable Liquid: Fl.P. below 73°F and BP below 100°F.

Explosive limit：

Explosive limits , vol% in air: 1.9-36.3

Odor：

ODOR IS SWEET, ALCOHOLIC, & LIKE ETHER OR BENZENE

Taste：

In foods, propylene oxide has no residual taste.

Safety Information

Packing level：

Hazard category：

Transport codes：

UN 1280

wgk germany：

hazard class code：

R12; R20/21/22; R36/37/38; R45; R46

safety instructions：

S45-S53

RTECS Number：

TZ2975000

Marks：

Storage features：

Fireproof. Separated from acids, bases and strong oxidants. Dry. Cool. Well closed. Keep in the dark.

Stability/Shelf Life：

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.

Precautionary statement(s)：

P201-P210-P280-P308 + P313-P370 + P378-P403 + P235

Hazard Statements：

H224-H302 + H312-H315-H319-H331-H335-H340-H350

Propylene Oxide Use and Manufacturing

Propylene oxide is an organic compound with the molecular formula CH3CHCH2O. This colourless volatile liquid is produced on a large scale industrially, its major application being its use for the production of polyether polyols for use in making polyurethane plastics. It is a chiral epoxide, although it is commonly used as a racemic mixture.This compound is sometimes called 1,2-propylene oxide to distinguish it from its isomer 1,3-propylene oxide, better known as oxetane.

Computed Properties

Molecular Weight:58.08
Hydrogen Bond Acceptor Count:1
Exact Mass:58.041864811
Monoisotopic Mass:58.041864811
Topological Polar Surface Area:12.5
Heavy Atom Count:4
Complexity:26.5
Undefined Atom Stereocenter Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Ethylbenzene

Propylene

Carbon dioxide

Calcium hydroxide

Sodium hydroxide

Propylene Glycol

Methanol

Propane

Isobutane

Hydrogen peroxide

Downstream Products

1-Methoxy-2-propanol

Propylene carbonate

Triisopropanolamine

1-Ethoxy-2-propanol

Hydroxypropyl methacrylate

Dipropylene glycol monomethyl ether

Dimethyl carbonate

Ethylene oxide-propylene oxide copolymer

Methyl acrylate

Price Analysis

Make your Propylene Oxide purchase based on the price and market insights! ECHEMI provides professional market insights with prices for you to make a better choice. Learn more on Propylene Oxide prices .

Data: 2026-07-17
Price: 9300.00Yuan/mt
Change: 33.33

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