p-nitrophenylazoresorcinol

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: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

extended-reading:https://www.bdmaee.net/wp-content/uploads/2022/08/-17-pc-amine-ma-190-amine-balance-catalyst.pdf
extended-reading:https://www.bdmaee.net/fentacat-f50-catalyst-cas122695-73-9-solvay/
extended-reading:https://www.morpholine.org/polyurethane-catalyst-pc41/
extended-reading:https://www.newtopchem.com/archives/44424
extended-reading:https://www.bdmaee.net/wp-content/uploads/2022/08/115.jpg
extended-reading:https://www.newtopchem.com/archives/925
extended-reading:https://www.newtopchem.com/archives/1870
extended-reading:https://www.newtopchem.com/archives/44436
extended-reading:https://www.bdmaee.net/wp-content/uploads/2021/05/2-6.jpg
extended-reading:https://www.bdmaee.net/dabco-bl-16-catalyst-cas8001-28-0–germany/