structural formula
| business number | 026d |
|---|---|
| molecular formula | c8h8br2 |
| molecular weight | 263.96 |
| label |
1,2-dibromoethylbenzene 1,2-dibromo-1-phenylethane, styrene dibromide, 1,2-dibromo-2-phenylethane, 1,2-dibromo-1-phenylethane, c6h5ch(br)ch2br |
numbering system
cas number:93-52-7
mdl number:mfcd00000138
einecs number:202-253-4
rtecs number:cz1800100
brn number:907323
pubchem number:24860601
physical property data
1. properties: white flaky crystals. sensitive to light.
2. density (g/ml, 25/4℃): undetermined
3. relative vapor density (g/ml, air=1): undetermined
4. melting point (ºc): 74.3
5. boiling point (ºc, normal pressure): 259.5
6. boiling point (ºc, 2kpa): 139～141
7. refractive index: undetermined
8. flash point (ºc): undetermined
9. specific rotation (º): undetermined
p>
10. autoignition point or ignition temperature (ºc): undetermined
11. vapor pressure (kpa, 25ºc): undetermined
12. saturated 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: soluble in ethanol and benzene, insoluble in water.
toxicological data
none
ecological data
none
molecular structure data
1. molar refractive index: 51.26
2. molar volume (cm3/mol): 149.3
3. isotonic specific volume (90.2k ): 386.8
4. surface tension (dyne/cm): 44.9
5. polarizability (10-24cm3): 20.32
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): 3.3
2. number of hydrogen bond donors: 0
3. number of hydrogen bond acceptors: 0
4. number of rotatable chemical bonds: 2
5. number of tautomers: none
6. topological molecule polar surface area 0
7. number of heavy atoms: 10
8. surface charge: 0
9. complexity: 87.3
10. same asnumber of element atoms: 0
11. determined number of atomic stereocenters: 0
12. uncertain number of atomic stereocenters: 1
13. determined number of chemical bond stereocenters: 0
14. uncertain number of chemical bond stereocenters: 0
15. number of covalent bond units: 1
properties and stability
none
storage method
this product should be sealed and stored in a cool place.
synthesis method
none
purpose
synthetic dyes, quaternary ammonium compounds.
