Catalog Number
ACMA00017413
Product Name
trans-1,2-Dichloroethylene
Description
1,2-dichloroethylene, (mixed isomers) appears as a clear colorless liquid with ether-like odor. Mixture of cis and trans isomers. Flashpoint 36 - 43° F. Denser than water and insoluble in water. Vapors heavier than air.;1,2-dichloroethylene, (trans isomers) is a clear colorless liquid with a pleasant odor. Flash point 43°F.;Liquid;COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.;Colorless liquid (usually a mixture of the cis & trans isomers) with a slightly acrid, chloroform-like odor.;Colorless liquid (usually a mixture of the cis & trans isomers) with a slightly acrid, chloroform-like odor.
IUPAC Name
(E)-1,2-dichloroethene
Molecular Weight
96.94g/mol
Molecular Formula
C2H2Cl2;ClCH=CHCl;C2H2Cl2
Canonical SMILES
C(=CCl)Cl
InChI
InChI=1S/C2H2Cl2/c3-1-2-4/h1-2H/b2-1+
InChI Key
KFUSEUYYWQURPO-OWOJBTEDSA-N
Boiling Point
118 to 140 °F at 760 mm Hg (NTP, 1992);117 °F at 745 mm Hg (NTP, 1992);54.4 °C;55 °C;47.64 °C;55 °C;118-140°F;118-140°F
Melting Point
-71 °F (NTP, 1992);-58 °F (NTP, 1992);-64.9 °C;-57 °C;-49.8 °C;-57 to -115°F;-57 to -115°F
Flash Point
39 °F (NTP, 1992);43 °F (NTP, 1992);6 °C (43 °F) - closed cup;36 °F (2 °C) - closed cup;6.0 °C (42.8 °F) - closed cup;2 °C c.c.;36-39°F;36-39°F
Density
1.27 at 77 °F (USCG, 1999);1.2743 at 77 °F (NTP, 1992);Approximately 1.28;1.2565 g/cu cm at 20 °C;Relative density (water = 1): 1.28;1.27;(77°F): 1.27
Solubility
less than 1 mg/mL at 70° F (NTP, 1992);less than 1 mg/mL at 64° F (NTP, 1992);In water, 3.50X10+3 mg/L at 25 °C;Insoluble in water;Soluble in alcohol, ether, and most other organic solvents;Soluble in most organic solvents;In water, 4.52X10+3 mg/L at 25 °C;In water, 0.63 g/100 g at 25 °C;Slightly soluble in water;Miscible with ethanol, ethyl ether, acetone; very soluble in benzene, chloroform;Solubility in water: poor;0.4%
Application
Trans-1,2-Dichloroethylene is a colorless liquid at room temperature with a slightly acrid, ethereal odor, and serves as an important industrial chemical. It comprises 40% of the trans and cis isomeric forms of 1,2-Dichloroethylene, distinguished by its variation in toxicity relative to the other forms. This compound is primarily utilized as a solvent for various applications and functions as an intermediate in the synthesis of chlorinated solvents and compounds. The odor threshold for this chemical in the air is 17 ppm, which indicates its presence at low concentrations in industrial environments.
Color/Form
Colorless liquid (usually a mixture of the cis- and trans-isomers) ...;Mobile liquid;Colorless, light liquid
Corrosivity
1,2-Dichloroethylene will attack some forms of plastics, rubber, and coatings.
Covalently-Bonded Unit Count
1
EC Number
205-860-2;208-750-2
Heat of Vaporization
130 Btu/lb = 72 cal/g = 3.0X10+5 J/kg;73.7 cal/g at BP
Log P
1.86 (LogP);log Kow = 1.86;log Kow = 2.09;2
MeSH Entry Terms
1,2-dichloroethene;1,2-dichloroethylene;1,2-dichloroethylene, (E)-isomer;1,2-dichloroethylene, (Z)-isomer
Monoisotopic Mass
95.953356g/mol
Odor
Ethereal, slightly acrid;Pleasant;Sweet, slightly irritating chloroform-like odor;... Slightly acrid, chloroform-like odor;Sweetish
Other Experimental
log Kow = 2.00 /average of cis- and trans-isomers/;Decomposes slowly on exposure to air, light, and moisture;Waste water treatment: evaporation from water at 25 °C of 1 ppm solution: 50% after 18 min (cis); 90% after 83 min (trans);Liquid-Water Interfacial Tension: (est) 30 dynes/cm = 0.030 N/m at 20 °C; Vapor (Gas) Specific Gravity: 3.34;Henry's Law constant = 4.08X10-3 atm-cu m/mol at 25 °C;Hydroxyl radical reaction rate constant = 2.09X10-12 cu cm/molecule-sec at 25 °C;MP: -49.4 °C; BP: 47.2 °C at 745 mm Hg;BP: 47-49 °C;Specific heat: 0.270 cal/g at 20 °C;Residue on evaporation: 0.0007% by weight maximum;Vapor pressure = 35.3 mPa at 20 °C;Partition coefficients at 37 °C for trans-1,2-dichloroethylene into blood = 58; into oil = 189.;Vapor pressure: 395 mm Hg at 30 °C;Waste water treatment: Evaporation from water at 25 °C of 1 ppm solution was 50% after 24 minutes and 90% after 83 minutes; measured half-life for evaporation from 1 ppm aqueous solution at 25 °C, still air, and an average depth of 6.5 cm was 24 minutes;Enthalpy of Vaporization: 36.04 kJ/mol at 25 °C;Heat of Formation (liquid): -24;3 kJ/mol; Heat of vaporization at BP: 28.9 kJ/mol;Forms explosive mixtures with air;Henry's Law constant = 9.28X10-3 atm-cu m/mole at 24 °C;Hydroxyl radical reaction rate constant = 2.34X10-12 cu cm/molecule-sec at 25 °C
Refractive Index
Index of refraction: 1.4454 at 20 °C
Stability
Stable under recommended storage conditions.;... Gradually decomposed by light, air, and moisture, forming /hydrogen chloride/.;May form organic peroxides following prolonged contact with air.;Stable under recommended storage conditions.;Noticeable subject to air oxidation.
UN Number
1150;1150;1150;1150;1150;1150
Vapor Density
3.34 (NTP, 1992) (Relative to Air);3.34 (NTP, 1992) (Relative to Air);3.4 (Air = 1);3.67 g/L at bp at 760 mm Hg;Relative vapor density (air = 1): 3.34;3.34
Vapor Pressure
180 to 265 mm Hg at 68 °F (NTP, 1992);200 mm Hg at 57 °F ; 400 mm Hg at 87.4° F (NTP, 1992);2.01X10+2 mm Hg at 25 °C;3.31X10+2 mm Hg at 25 °C;180-265 mmHg;180-265 mmHg
Viscosity
0.41 cP at 20 °C
