Propylene oxide
CAS Number: 75-56-9
Chemical Formula: C3H6O
Synonyms:
PROPYLENOXIDE
PROPYLENEOXIDE,REAGENT
Appearance: Colorless liquid
HS Code: 2910 20 00
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description of Propylene oxide CAS#75-56-9
Propylene oxide, often shortened to P.O., has multiple synonyms including vinyl chloride, 1,2-propylene oxide, and methyl ethylene oxide. It presents as a colorless, flammable, and volatile liquid with a characteristic ether-like scent.
Key Physicochemical Properties，Molecular weight: 58.08，Relative density: 0.823 (measured at 25°C)，Melting point: -112.13°C，Boiling point: 34.23°C，Refractive index: 1.3664，Closed-cup flash point: -35°C，Ignition temperature: 420°C，Vapor Pressure & Solubility，Vapor pressure (per Chemicalbook data, in Pa): 1.04×10⁴ (-20°C), 2.80×10⁴ (0°C), 6.53×10⁴ (20°C), and 7.59×10⁴ (25°C).，Solubility: Dissolves in water at 40.5 (20°C) and 60 (30°C), and is miscible with the majority of common chemical reagents.
Azeotropic Characteristics
It forms a binary azeotrope with water (containing 1% water) at an azeotropic temperature of 39.9°C. Binary azeotropes can also be formed with substances like dichloromethane, ether, cyclohexane, cyclopentane, and pentene.
Parameters
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 | 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 |
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) |
Safety Information
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 |
Product Application of Propylene oxide CAS#75-56-9
As a crucial petrochemical feedstock, it is widely utilized in manufacturing polyether, propylene glycol, surfactants, foaming agents, demulsifiers, mineral processing agents, and other related products.
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