1,8-Naphthalimide 1,8-Naphthalimide
Structural formula
| Business number | 01SF |
|---|---|
| Molecular formula | C12H7NO2 |
| Molecular weight | 197.19 |
| label |
None yet |
Numbering system
CAS number:81-83-4
MDL number:MFCD00006920
EINECS number:201-379-7
RTECS number:None
BRN number:153150
PubChem number:24897515
Physical property data
1. Appearance: Off-white to white powder 2. Density (g/mL, 25/4℃): Uncertain
3. Relative vapor density (g/mL, air=1): Uncertain
4. Melting point (ºC): 299
5. Boiling point (ºC, normal pressure): Uncertain
6. Boiling point (ºC, 5.2kPa): Uncertain
p>
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. Saturated 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: Uncertain
Toxicological data
None yet
Ecological data
None yet
Molecular structure data
1. Molar refractive index: 55.26
2. Molar volume (cm3/mol): 141.6
3. Isotonic specific volume (90.2K ): 395.9
4. Surface tension (dyne/cm): 61.0
5. Polarizability (10-24cm3): 21.90
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): None
2. Number of hydrogen bond donors: 1
3. Number of hydrogen bond acceptors: 2
4. Number of rotatable chemical bonds: 0
5. Number of tautomers: 2
6. Topological molecule polar surface area 46.2
7. Number of heavy atoms: 15
8. Surface charge: 0
9. Complexity: 285
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 in a dry and dark place.
Synthesis method
Obtained from the amination of 1,8-naphthalenedicarboxylic acid. Add 290kg of 1,8-naphthalenedicarboxylic acid; 414kg of 20% ammonia water and 414kg of water into the reaction pot, heat to 100-110°C, and the pressure is 0.2-0.25MPa. Keep warm for 5 hours. Then cool to below 40°C, filter and wash to obtain 242kg of 1,8-naphthalenedicarboximide.
Purpose
Dye intermediates. Used to synthesize perylene dyes and pigments, such as reduced gray BG, reduced brilliant orange 3RK, soluble anthracene brilliant orange IRK and fluorescent whitening agents, etc. Also used in the preparation of pesticides.