2,4-dinitro-1-naphthol-7-sulfonic acid
Structural formula
| Business number | 052H |
|---|---|
| Molecular formula | C10H6N2O8S |
| Molecular weight | 314.23 |
| label |
2,4-dinitro-1-naphthol-7-sulfonic acid, 2,4-Dinitro-1-naphthol-7-sulfonic acid, Flavianic acid, 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic acid |
Numbering system
CAS number:483-84-1
MDL number:MFCD00149489
EINECS number:207-600-3
RTECS number:QK1810000
BRN number:None
PubChem ID:None
Physical property data
1. Characteristics: Yellow needle-shaped crystals.
2. Density (g/mL,25℃） : Undetermined
3. Relative vapor density (g/mL,air =1): Not determined
4. Melting point (ºC): 151
5. Boiling point (ºC,normal pressure): Undetermined
6. Boiling point (ºC, kPa):Undetermined
7. Refractive index (D20)：Undetermined
8. Flashpoint (ºC): Undetermined
9. Specific rotation (ºC): Undetermined
10. Autoignition point or ignition temperature (ºC): Undetermined
11. Vapor pressure (mmHg, ºC): Undetermined
12. Saturated vapor pressure (kPa, ºC): Undetermined
13. Heat of combustion (KJ/mol): Undetermined
14. Critical temperature (ºC): Undetermined
15. Critical pressure (KPa): Undetermined
16. Oil and water (octanol/Water) logarithm of the partition coefficient:Undetermined
17. Explosion limit (%,V/V): Undetermined
18. Lower explosion limit (%,V/V): Undetermined
19. Solubility:Soluble in water and ethanol.
Toxicological data
Mutagenicity data: microbial organismsTESTSystemic mutation: bacteria–Salmonella Typhimurium:10umol/Tablet
Ecological data
This substance may be harmful to the environment There are hazards and special attention should be paid to water bodies.
Molecular structure data
1、 Molar refractive index:68.25
2、 Molar volume（m3/mol)：168.4
3、 Isotonic specific volume (90.2K):534.5
4、 Surface tension（dyne /cm）：101.4
5、 Polarizability(10-24cm3）：27.05
Compute chemical data
1. Reference value for hydrophobic parameter calculation (XlogP): 1.8
2. Number of hydrogen bond donors: 2
3. Number of hydrogen bond acceptors: 8
4. Number of rotatable chemical bonds: 1
5. Number of tautomers: 3
6. Topological molecule polar surface area 175
7. Number of heavy atoms: 21
8. Surface charge: 0
9. Complexity: 533
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
Use and store according to specifications, no decomposition will occur, and avoid contact with oxides
Storage method
Save in a sealed manner and place it in a ventilated and dry place to avoid contact with other oxides.
Synthesis method
Byα-Naphthol is obtained by sulfonation and nitration. Will 200g25%Slowly add fuming sulfuric acid into 50g α-naphthol, stir to dissolve, and dissolve in 125℃Reaction 1h. After the reaction is completed, cool, and 500g Mix with crushed ice and filter. Add120gConcentrated nitric acid with a relative density of 1.40, in Heating at 50℃ 1.5h. The reactant was left at room temperature for 12h, filtered, recrystallized with dilute hydrochloric acid, and dried to obtain the finished product.
Purpose
Used as organic synthesis intermediates, organic base precipitants, and amino acid reagents. This product can react with 50 a variety of metal ions, but it only precipitates with zirconium and lead in acidic solutions. It has the advantages of strong selectivity and high sensitivity when used to measure zirconium.