Epoxy curing agent Knowledge p-Hydroxyphenylarsonic Acid p-Hydroxyphenylarsonic Acid

p-Hydroxyphenylarsonic Acid p-Hydroxyphenylarsonic Acid

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Structural formula of p-hydroxyphenylarsonic acid

Structural formula

Business number 02DF
Molecular formula C6H7AsO4
Molecular weight 218.04
label

p-arsenate phenol,

4-Hydroxyphenylarsonic acid,

p-Oxyphenyl arsonic acid,

Oxarsanilic acid,

Hoc6h4aso(oh)2

Numbering system

CAS number:98-14-6

MDL number:None

EINECS number:202-641-3

RTECS number:CY5075000

BRN number:None

PubChem ID:None

Physical property data

1. Characteristics: White needle-shaped crystals.


2. Density (g/mL,25) : Undetermined


3. Relative vapor density (g/mL,Air=1): Undetermined


4. Melting point (ºC):170- 174


5. Boiling point (ºC,normal pressure): Undetermined


6. Boiling point (ºC, kPa): Not determined


7. Refractive index: Undetermined


8. Flashpoint (ºC): Undetermined


9. Specific optical rotation (º): Undetermined


10. Autoignition point or ignition temperature (ºC):Undetermined


11. Vapor pressure (mmHg, 20ºC): Undetermined


12. Saturated vapor pressure (kPa, 33ºC): Not determined


13. Heat of combustion (KJ/mol): Undetermined


14. Critical temperature (ºC): Undetermined


15. Critical pressure (KPa): Undetermined


16. Oil and water (octanol/Log value of the partition coefficient for water: undetermined


17. ���Explosion upper limit (%,V/V): Undetermined


18. Lower explosion limit (%,V/V): Undetermined


19. Solubility:Easily soluble in water, ethanol or dilute mineral acid, slightly soluble in acetone, extremely insoluble in ether and ethyl acetate.

Toxicological data

Acute toxicity: Rat OralLDLo450 mg/kg
 Rat intravenous injectionLDLo100 mg/kg;
Rat muscleLDLo90 mg/kg;
  Mice intravenously injected LD50: 56mg/kg;

Ecological data

None

Molecular structure data

None

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 3

3. Number of hydrogen bond acceptors: 4

4. Number of rotatable chemical bonds: 1

5. Number of tautomers: 2

6. Topological molecule polar surface area 77.8

7. Number of heavy atoms: 11

8. Surface charge: 0

9. Complexity: 167

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

Storage method

None

Synthesis method

Arsinization of phenol and arsinic acid Produced by chemical reaction. Dissolve arsenic acid in water and heat the solution to 180, dehydrate and concentrate and then cool to 110. Add phenol, add phenol to >℃Stir the reaction 28h. Add water until the relative density of the solution is 1.85-1.90, cool to precipitate crystals, and filter to obtain crude product. The mother liquor is arsenic acid, which can be used after treatment. The crude product is recrystallized with water and decolorized with activated carbon to obtain p-hydroxyphenylarsonic acid. Another preparation method is to diazotize p-aminophenylarsonic acid and then hydrolyze it.

Purpose

P-hydroxyphenylarsinic acid is an anti- It is an intermediate of spirochetal disease drugs and disinfectants, and is also a reagent for detecting titanium and zirconium.

��None

Synthesis method

Arsinization of phenol and arsinic acid Produced by chemical reaction. Dissolve arsenic acid in water and heat the solution to 180, dehydrate and concentrate and then cool to 110. Add phenol, add phenol to >℃Stir the reaction 28h. Add water until the relative density of the solution is 1.85-1.90, cool to precipitate crystals, and filter to obtain crude product. The mother liquor is arsenic acid, which can be used after treatment. The crude product is recrystallized with water and decolorized with activated carbon to obtain p-hydroxyphenylarsonic acid. Another preparation method is to diazotize p-aminophenylarsonic acid and then hydrolyze it.

Purpose

P-hydroxyphenylarsinic acid is an anti- It is an intermediate of spirochetal disease drugs and disinfectants, and is also a reagent for detecting titanium and zirconium.

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