1,1,1 Trichloroethane (CH 3 CCl 3 )

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1,1,1 Trichloroethane (CH₃CCl₃)
Categories:	Fluid; Solvent
Material Notes:	Widely used as a solvent and as a cold cleaning and vapor degreasing agent. Previously used in household products, including sprays, spot removers, adhesives, and lubricants. It is being phased out of many uses due to environmental and health concerns. Information provided by Enviro Tech International and the reference(s).
Key Words:	CH3CCl3, a-trichloroethane, chloroethene, methylchloroform, methyltrichloromethane, TCEA, trichloromethylmethane
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Physical Properties	Original Value	Comments

Density	0.00555 g/cc	Vapor Density
	1.32 g/cc @Temperature 25.0 °C
	1.339 g/cc @Temperature 20.0 °C
Viscosity	0.79 cP @Temperature 25.0 °C
Molecular Weight	133.4 g/mol
Vapor Pressure	100 torr @Temperature 20.0 °C
Surface Tension	25.6 dynes/cm	200°C

Electrical Properties	Original Value	Comments
Dielectric Constant	7.252 @Temperature 20.0 °C

Thermal Properties	Original Value	Comments
Heat of Vaporization	57.5 cal/g
Specific Heat Capacity	0.250 BTU/lb-°F
Thermal Conductivity	0.1012 W/m-K @Temperature 20.0 °C
Melting Point	-30.4 °C
Boiling Point	74.0 °C
Decomposition Temperature	200 °C
Flammability Test	8.0 - 13	vol% limits

Optical Properties	Original Value	Comments
Refractive Index	1.437 @Wavelength 589.3 nm	n_D

Descriptive Properties
Atmospheric Lifetime	5.4 years
CAS Number	71-55-6
CAS registry number (CARN)	71-55-6
Chemical Formula	C₂H₃Cl₃
Evaporation Rate (n-Butyl Acetate = 1)	4.55	ASTM D-3539-76
Flash Point TCC	None
Hansen Parameter Non-Polar	17
Hansen Parameter Polar	5.8
Henry's Law Constant (atm m³/mol)	0.003
Hildebrand Parameter	17.4
Kauri Butanol Number	124
Ozone Depletion Potential (ODP)	> 0.10
UN Number	2831

References for this datasheet.

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VORG043 / 74554

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