
structural formula
| business number | 020s |
|---|---|
| molecular formula | c9h8o4 |
| molecular weight | 180.16 |
| label |
α-carboxy o-toluic acid, 2-carboxyphenylacetic acid, α-carboxy-o-toluic acid, 2-carboxyphenylacetic acid, ho2cch2c6h4co2h |
numbering system
cas number:89-51-0
mdl number:mfcd00004326
einecs number:201-913-9
rtecs number:cy1575590
brn number:1872069
pubchem number:24895468
physical property data
1. properties: beige to light green powder.
2. density (g/ml, 25/4℃): undetermined
3. relative vapor density (g/ml, air=1): undetermined
4. melting point (ºc): 183~186
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: soluble in ethanol, slightly soluble in water , ether.
toxicological data
none
ecological data
none
molecular structure data
1. molar refractive index: 44.29
2. molar volume (cm3/mol): 129.4
3. isotonic specific volume (90.2k ): 367.7
4. surface tension (dyne/cm): 65.2
5. polarizability (10-24cm3): 17.56
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): none
2. number of hydrogen bond donors: 2
3. number of hydrogen bond acceptors: 4
4. yes�number of converted chemical bonds: 3
5. number of tautomers: none
6. topological molecule polar surface area 74.6
7. number of heavy atoms :13
8. surface charge: 0
9. complexity: 212
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
none
storage method
this product should be kept sealed.
synthesis method
produced by the reaction of indene and concentrated sulfuric acid.
purpose
used in organic synthesis.

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