1-amino-8-naphthol-4-sulfonic acid 1-amino-8-naphthol-4-sulfonic acid
structural formula
| business number | 01u5 |
|---|---|
| molecular formula | c10h9no4s |
| molecular weight | 239.24 |
| label |
1-amino-8-naphthol-4-sulfonic acid, 8-amino-1-naphthol-5-sulfonic acid, s acid, 4-amino-5-hydroxy-1-naphthalenesulfonic acid, chicago s acid, 8-amino-1-naphthol-5-sulfonic acid, h2nc10h5(oh)so3h |
numbering system
cas number:83-64-7
mdl number:mfcd00003992
einecs number:201-491-6
rtecs number:qk1295000
brn number:none
pubchem id:none
physical property data
1. appearance: white needle-like crystal
2. density (g/ml, 25/4℃): uncertain
3. relative vapor density (g/ml , air=1): uncertain
4. melting point (ºc): uncertain
5. boiling point (ºc, normal pressure): uncertain
6. boiling point (ºc, 5.2kpa): uncertain
7. refractive index: uncertain
8. flash point (ºc): uncertain
9. specific rotation (º): uncertain.
10. autoignition point or ignition temperature (ºc): uncertain
11. vapor pressure (kpa, 25ºc): uncertain
12. saturation vapor pressure (kpa, 60ºc): uncertain
13. heat of combustion (kj/mol): uncertain
14. critical temperature (ºc): uncertain
15. critical pressure (kpa): uncertain
16. log value of oil-water (octanol/water) partition coefficient: uncertain
17. explosion upper limit (% , v/v): uncertain
18. lower explosion limit (%, v/v): uncertain
19. solubility: soluble in alkali solution, slightly soluble in water , insoluble in ethanol and ether.
toxicological data
1. acute toxicity:
rat caliber ld50: 6210mg/kg;
2. neurotoxicity:
rabbit eye test: 500 mg/ 24hreaction;
ecological data
none yet
molecular structure data
1. molar refractive index: 59.80
2. molar volume (cm3/mol): 147.0
3. isotonic specific volume (90.2k ): 448.3
4. surface tension (dyne/cm): 86.4
5. polarizability (10-24cm3): 23.70
compute chemical data
1. reference value for hydrophobic parameter calculation (xlogp): 1.4
2. number of hydrogen bond donors: 3
3. number of hydrogen bond acceptors: 5
4. number of rotatable chemical bonds: 1
5. number of tautomers: 14
6. topological molecule polar surface area 109
7. number of heavy atoms: 16
8. surface charge: 0
9. complexity: 350
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 yet
storage method
this product should be sealed and stored away from light.
synthesis method
it is obtained by alkali fusion and acidification of 1-naphthylamine-4,8-disulfonic acid at 200-230℃.
purpose
organic synthesis. dye intermediates. an important intermediate for the manufacture of acid dyes and leather dyes, and also used to synthesize chicago ss acid, etc.
