Structural formula
| Business number | 01HH |
|---|---|
| Molecular formula | C12H9N3O4 |
| Molecular weight | 259.22 |
| label |
Try Magnesium Spirit, azo violet, Oxygen violet, 2,4-dihydroxy-4′-nitroazobenzene, 4-(4-Nitrophenylazo)resorcinol, p-nitroazobenzeneresorcinol, 4-(p-Nitrophenylazo)resorcinol, 4-(4-Nitrophenylazo)resorcinol, p-Nitroazobenzene-2,4-diol, 4-(4′-Nitrophenylazo)resorcinol, 2,4-Dihydroxy-4′-nitroazobenzene, O2NC6H4N=NC6H3-1,3-(OH)2 |
Numbering system
CAS number:74-39-5
MDL number:MFCD00007310
EINECS number:200-808-5
RTECS number:VH2810000
BRN number:674709
PubChem number:24847188
Physical property data
1. Properties: reddish-brown powder
2. Density (g/mL, 25/4?): Uncertain
3. Relative vapor density (g/mL, Air=1): Uncertain
4. Melting point (ºC): 195-200 (dec.)(lit.)
5. Boiling point (ºC, normal pressure): No Confirm
6. Boiling point (ºC, 5.2 kPa): Uncertain
7. Refractive index: Uncertain
8. Flash point (ºC): Uncertain Determine
9. Specific rotation (º): Uncertain
10. Autoignition point or ignition temperature (ºC): Uncertain
11. Vapor Pressure (kPa, 25 ºC): Uncertain
12. Saturated vapor pressure (kPa, 60 ºC): Uncertain
13. Heat of combustion (KJ/mol): Uncertain
14. Critical temperature (ºC): Uncertain
15. Critical pressure (KPa): Uncertain
16. Oil and water (octanol/water) Log value of distribution coefficient: Uncertain
17. Explosion upper limit (%, V/V): Uncertain
18. Explosion lower limit (%, V/V): Uncertain
19. Solubility: Soluble in dilute alkali, it turns red-purple, slightly soluble in boiling fermentation, acetone, acetic acid and toluene, all turn yellow, insoluble in water
Toxicological data
Acute toxicity: rat oral LD50: >500 mg/kg;
Ecological data
Generally speaking, it is not harmful to water bodies
Do not use it without government permission.Discharge material into surrounding environment.
Molecular structure data
1. Molar refractive index: 66.22
2. Molar volume (cm3/mol): 178.1
3. Isotonic specific volume (90.2K ): 504.3
4. Surface tension (dyne/cm): 64.2
5. Polarizability (10-24cm3): 26.25
Compute chemical data
1. Hydrophobic parameter calculation reference value (XlogP): 1.9
2. Number of hydrogen bond donors: 2
3. Number of hydrogen bond acceptors: 6
4. Number of rotatable chemical bonds: 2
5. Number of tautomers: 12
6. Topological molecular polar surface area (TPSA): 105
p>
7. Number of heavy atoms: 19
8. Surface charge: 0
9. Complexity: 468
10. Number of isotope atoms : 0
11. Determine the number of atomic stereocenters: 0
12. Uncertain number of atomic stereocenters: 0
13. Determine the chemical bond configuration Number of centers: 1
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
Dissolve 138g of p-nitroaniline in 250ml of hot concentrated hydrochloric acid, cool to 0-5°C, and add dropwise a saturated aqueous solution containing 85g of nitrous acid while stirring, with the temperature not exceeding 5°C. Then 100g of resorcinol and dilute alkali solution were added to this diazonium salt solution. The coupling product is filtered, dried, and recrystallized with alcohol to obtain p-nitrophenylazoresorcinol.
Purpose
Reagent for measuring magnesium, adsorption indicator
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