Structural formula
| Business number | 06RB |
|---|---|
| Molecular formula | C2H4I2 |
| Molecular weight | 281.86 |
| label |
Ethylene diiodide, 1,2-diiodoethane, Ethylene diiodide, Ethylene diodide, Ethylene iodide, ICH2CH2I |
Numbering system
CAS number:624-73-7
MDL number:MFCD00001093
EINECS number:210-859-5
RTECS number:None
BRN number:1730870
PubChem number:24893381
Physical property data
1. Properties: light brown lens powder.
2. Density (g/mL, 25/4℃): 2.13
3. Liquid phase standard claims heat (enthalpy) (kJ·mol-1
sup>): 1.1
4. Melting point (ºC): 81.5
5. Boiling point (ºC, normal pressure): 200
6. Boiling point (ºC) ,5.2kPa): Undetermined
7. Refractive index: 1.871
8. Gas phase standard claims heat (enthalpy) (kJ·mol-1) : 66.8
9. Gas phase standard entropy (J·mol-1·K-1): 348.5
10. Gas phase standard free energy of formation (kJ·mol-1): 78.7
11. Vapor pressure (kPa, 25ºC): Undetermined
12. Saturation Vapor pressure (kPa, 60ºC): Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Log value of oil-water (octanol/water) partition coefficient: Undetermined
17. Explosion upper limit (% , V/V): Undetermined
18. Lower explosion limit (%, V/V): Undetermined
19. Solubility: Insoluble in water.
Toxicological data
None yet
Ecological data
Generally not hazardous to water, do not discharge material into the surrounding environment without government permission.
Molecular structure data
1. Molar refractive index: 37.25
2. Molar volume (cm3/mol): 99.2
3. Isotonic specific volume (90.2K ): 259.6
4. Surface tension (dyne/cm): 46.9
5. Polarizability (10-24cm3): 14.76
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. RotatableNumber of �� bonds: 1
5. Number of tautomers: None
6. Topological molecule polar surface area 0
7. Number of heavy atoms :4
8. Surface charge: 0
9. Complexity: 6
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: 0
14. Number of uncertain chemical bond stereocenters: 0
15. Number of covalent bond units: 1
Properties and stability
Keep away from oxidizing agents and light.
Storage method
Store in an airtight container and keep refrigerated away from light. Keep away from oxidizing agents and light.
Synthesis method
Derived from the reaction of ethylene and iodine. Pour ethylene into a mixture of iodine and ethanol until the color of iodine completely disappears and needle-like crystals appear. After the reaction is completed, filter and wash, and the obtained crude product is recrystallized with ethanol to obtain 1,2-diiodoethane.
Purpose
Used in organic synthesis.
