structural formula
business number | 0195 |
---|---|
molecular formula | c20h16 |
molecular weight | 256.34 |
label |
9,10-dimethyl-1.2benzanthracene, dimethylbenzanthracene, 1,4-dimethyl-2,3-benzophenanthrene, 9,10-dimethyl-1,2-benzanthracene, dimethylbenzanthrene, aromatic hydrocarbons |
numbering system
cas number:57-97-6
mdl number:mfcd00003600
einecs number:200-359-5
rtecs number:cw3850000
brn number:1912135
pubchem number:24893738
physical property data
1. properties: slightly yellow-green leaf-shaped crystals. it fluoresces blue-violet under ultraviolet light.
2. density (g/ml, 25/4℃): undetermined
3. relative vapor density (g/ml, air=1): undetermined
4. melting point (ºc): 122~123
5. boiling point (ºc, normal pressure): undetermined
6. boiling point (ºc, 5.2kpa): undetermined
7. refractive index: undetermined
8. flash point (ºc): undetermined
9. specific rotation (º): undetermined determined
10. autoignition point or ignition temperature (ºc): not determined
11. vapor pressure (kpa, 25ºc): not determined
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: easily soluble in benzene, soluble in acetone , slightly soluble in ethanol, insoluble in water.
toxicological data
none
ecological data
none
molecular structure data
1. molar refractive index: 89.43
2. molar volume (cm3/mol): 224.3
3. isotonic specific volume (90.2k): 594.0
4. surface tension (dyne/cm): 49.1
5. dielectric constant (f/m): 3.13
6. polarizability (10-24cm3): 35.45
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): none
2. hydrogen bond supplynumber of ��: 0
3. number of hydrogen bond acceptors: 0
4. number of rotatable chemical bonds: 0
5. tautomers number: none
6. topological molecule polar surface area 0
7. number of heavy atoms: 20
8. surface charge: 0
9. complexity: 346
10. number of isotope atoms: 0
11. determine the number of atomic stereocenters: 0
12. uncertain number of atomic stereocenters: 0
13. determined number of stereocenters of chemical bonds: 0
14. uncertain number of stereocenters of chemical bonds: 0
15 .number of covalent bond units: 1
properties and stability
1. exist in smoke.
2. it is carcinogenic.
storage method
this product should be kept sealed.
synthesis method
1. from 9,10-dimethyl-9,10-dihydroxy-9,10-dihydro-1,2-benzanthracene or 9,10-dimethyl-9,10-dimethoxy- preparation from 9,10-dihydro-1,2-benzanthracene or 9-methyl-1,2-benzanthracene-10-one.
purpose
for cancer research. dye manufacturing.