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Name

Acetone

CAS

67-64-1

EINECS

200-662-2

Molecular Formula

C3H6O

Molar Mass

58.08

Density

0.791g/mL at 25°C(lit.)

Melting Point

-94°C(lit.)

Boling Point

56 °C760 mm Hg(lit.)

Flash Point

1°F

JECFA Number

139

Water Solubility

soluble

Solubility

Miscible with water and with ethanol (96 per cent).

Vapor Presure

184 mm Hg ( 20 °C)

Vapor Density

2 (vs air)

Appearance

Liquid

Specific Gravity

0.79 (25/25℃)

Color

Colorless, invisible vapor

Odor

Characteristic pungent odor detectable at 33 to 700 ppm (mean = 130 ppm)

BRN

14,66

Storage Condition

Store at +5°C to +30°C.

Explosive Limit

2.6-12.8%(V)

Refractive Index

n20/D 1.359(lit.)

LogP

-0.16

Toxicity

LD50 in rats: 10.7 ml/kg orally (Smyth)

HS Code

29141100

Hazard Class

3

Packing Group

II

Physical and Chemical Properties

Appearance and properties: colorless, transparent and easy to flow liquid, aromatic odor, volatile.
melting point (℃): -94.6
boiling point (℃): 56.5
relative density (water = 1): 0.80
relative vapor density (Air = 1): 2.00
saturated vapor pressure (kPa): 53.32(39.5 ℃)
heat of combustion (kJ/mol): 1788.7
critical temperature (℃): 235.5
critical pressure (MPa): 4.72
logarithm of octanol/water partition coefficient: -0.24
flash point (℃): -20
ignition temperature (℃): 465
Upper Explosive limit%(V/V): 2.5
lower explosive limit%(V/V): 13.0
solubility: miscible with water, miscible with ethanol, ether, chloroform, oil, most organic solvents such as hydrocarbons

Flammability and Explosibility

Acetone is extremely flammable (NFPA rating = 3), and its vapor can travel a considerable distance to an ignition source and "flash back." Acetone vapor forms explosive mixtures with air at concentrations of 2 to 13% (by volume). Carbon dioxide or dry chemical extinguishers should be used for acetone fires.

pKa

19.3(at 25℃)

Dielectric constant

1.0（0℃）

Merck

14,66

Exposure limit

TLV-TWA 1780 mg/m3 (750 ppm), STEL2375 mg/m3 (ACGIH); 10 h–TWA 590mg/m3 (250 ppm); IDLH 20,000 ppm(NIOSH).

PH

5-6 (395g/l, H2O, 20°C)

Relative polarity

0.355

Odor Threshold

42ppm

IDLA

2,500 ppm