1-amino-8-naphthol-4-sulfonic acid 1-amino-8-naphthol-4-sulfonic acid

structural formula

• numbering system
• physical property data
• toxicological data
• ecological data
• molecular structure data
• computing chemical data
• more
  • properties and stability
  • storage method
  • synthesis method
  • purpose

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.