1,2-Dichloroethylene - Materials / Alfa Chemistry

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1,2-Dichloroethylene

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Catalog Number

ACMA00016754

Product Name

1,2-Dichloroethylene

Category

Polymers

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.;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

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

InChI Key

KFUSEUYYWQURPO-UHFFFAOYSA-N

Boiling Point

118 to 140 °F at 760 mm Hg (NTP, 1992);55.0 °C;55 °C;55 °C;118-140°F;118-140°F

Melting Point

-71 °F (NTP, 1992);-57.0 °C;-57 °C;-57 to -115°F;-57 to -115°F

Flash Point

39 °F (NTP, 1992);6 °C (43 °F) - closed cup;36 °F (2 °C) - closed cup;2 °C c.c.;36-39°F;36-39°F

Density

1.27 at 77 °F (USCG, 1999);Approximately 1.28;Relative density (water = 1): 1.28;1.27;(77°F): 1.27

Solubility

less than 1 mg/mL at 70° F (NTP, 1992);0.04 M;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;Solubility in water: poor;0.4%

Application

1,2-Dichloroethylene serves as a versatile chemical compound, composed of three isomers: sym-, cis-, and trans-, each of which presents different levels of toxicity. At room temperature, these isomers exist as colorless liquids with a slightly acrid, ethereal odor and an odor threshold in the air of 17 ppm. The sym-isomer is commonly utilized as a solvent for substances such as fats, phenol, and camphor, and acts as an intermediate in the synthesis of various chlorinated solvents and compounds, reflecting its role as an important member of the chloroethenes family.

Color/Form

Colorless liquid (usually a mixture of the cis- and trans-isomers) ...;Mobile liquid

Complexity

19.2

Corrosivity

1,2-Dichloroethylene will attack some forms of plastics, rubber, and coatings.

Covalently-Bonded Unit Count

EC Number

208-750-2

Exact Mass

95.953356g/mol

Formal Charge

Heat of Vaporization

130 Btu/lb = 72 cal/g = 3.0X10+5 J/kg

Heavy Atom Count

ICSC Number

0436

Log P

log Kow = 1.86;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

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

Rotatable Bond Count

RTECS Number

KV9360000

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.

UN Number

1150;1150;1150;1150;1150

Vapor Density

3.34 (NTP, 1992) (Relative to Air);3.4 (Air = 1);Relative vapor density (air = 1): 3.34;3.34

Vapor Pressure

180 to 265 mm Hg at 68 °F (NTP, 1992);201.00 mmHg;2.01X10+2 mm Hg at 25 °C;180-265 mmHg;180-265 mmHg

XLogP3

1.9

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