Structural formula
| Business number | 03ZS |
|---|---|
| Molecular formula | C2H2Cl2 |
| Molecular weight | 96.94 |
| label |
None yet |
Numbering system
CAS number:156-59-2
MDL number:MFCD00000925
EINECS number:205-859-7
RTECS number:KV9420000
BRN number:1071208
PubChem number:24872155
Physical property data
1. Properties: Colorless liquid with an odor similar to chloroform.
2. Boiling point (ºC, 101.3kPa): 60.62
3. Melting point (ºC): -81.5
4. Relative density (g/mL, 20/4ºC): 1.2837
5. Refractive index (20ºC): 1.4490
6. Viscosity (mPa·s, gas): 0.467
7. Flash point (ºC, closed): 3.9
8. Heat of vaporization (KJ/mol, b.p.): 30.25
9. Heat of fusion (KJ/mol): 7.211
10. Heat of combustion (KJ/mol, 18.7ºC): 1093.42
11. Specific heat capacity (KJ/(kg·K), 20ºC): 1.18
12. Critical temperature (ºC): 271.0
13. Critical pressure (MPa): 5.87
14. Conductivity (S/m, 25ºC): 8.5×10-9
15. Body expansion coefficient (K-1, 15~45ºC): 0.00127
16. Solubility: slightly soluble in water . Miscible with various organic solvents such as ethanol and ether.
17. Relative density (20℃, 4℃): 1.2837
18. Relative density (25℃, 4℃): 1.2771
19. Normal temperature Refractive index (n20): 1.4490
20. Refractive index at room temperature (n25): 1.4461
21. Solved Degree parameter (J·cm-3)0.5: 19.476
22. van der Waals area (cm2· mol-1): 5.760×109
23. van der Waals volume (cm3·mol-1): 40.180
24. The liquid phase standard claims heat (enthalpy) (kJ·mol-1): -33.8
25. Liquid phase standard hot melt (J·mol-1·K-1): 117.9
26. Gas phase standard claims heat (enthalpy )( kJ·mol-1): -2.8
27. Gas phase standard entropy (J·mol-1·K-1 ): 289.72
28. Gas phase standard formation free energy (kJ·mol-1): 19.7
29. Gas phase standard hot melt (J·mol-1·K-1): 65.00
Toxicological data
None yet
Ecological data
None yet
Molecular structure data
None yet
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): None
2. Number of hydrogen bond donors: 0
3. Number of hydrogen bond acceptors: 0
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: None
6. Topological molecule polar surface area 0
7. Number of heavy atoms: 4
8. Surface charge: 0
9. Complexity: 19.2
10. Number of isotope atoms: 0
11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters: 0
13. Determine the number of chemical bond stereocenters: 1
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
None yet
Storage method
None yet
Synthesis method
Prepared from the reduction of tetrachloroethylene.
Purpose
It is difficult to burn, but the vapors form explosive mixtures with air. Used as a low-temperature extraction agent, refrigerant, and used to prepare varnish and rubber solutions.
