phosphate

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:56-72-4

mdl number:mfcd00041820

einecs number:200-285-3

rtecs number:gn6300000

brn number:327083

pubchem number:24868876

physical property data

1. characteristics: colorless crystal. the industry is brown crystal

2. density (g/ml,25 /4℃): 1.474

3. relative vapor density (g/ml,air=1): undetermined

4. melting point ( ºc): 95℃

5. boiling point ( ºc,normal pressure): undetermined

6.p; boiling point (ºc,5.2kpa): undetermined

7. refractive index: undetermined

8. flashpoint (ºc): undetermined

9. specific optical rotation (º): undetermined

10. autoignition point or ignition temperature (ºc): not ok

11. vapor pressure (kpa,25ºc): undetermined

12. saturation vapor pressure (kpa,60ºc): undetermined

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 partition coefficient for water: undetermined

17. explosion limit (%,v/v): not ok

18. lower explosion limit (%,v/v): not ok

19. solubility:slightly soluble in water

toxicological data

none

ecological data

none

molecular structure data

1. molar refractive index: 86.84

2. molar volume (m³/mol）：261.8

3. isotonic specific volume (90.2k):709.5

4. surface tension (dyne/cm):53.9

5. polarizability（10^-24cm³): 34.42

compute chemical data

1. reference value for hydrophobic parameter calculation (xlogp): 4.5

2. number of hydrogen bond donors: 0

3. number of hydrogen bond acceptors: 6

4. number of rotatable chemical bonds: 6

5. number of tautomers: none

6. topological molecule polar surface area 86.1

7. number of heavy atoms: 22

8. surface charge: 0

9. complexity: 500

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

this product should be kept sealed.

synthesis method

(1)200gethyl acetoacetate and270g so2ci2, respectively dissolved in100mlbenzene, then in10℃, so2ci2it is obtained by dropping a benzene solution into a benzene solution of ethyl acetoacetate. (2) resorcin88gandα-ethyl acetoacetate chloride132gdrip640mlin concentrated sulfuric acid, the temperature is 5obtained by reaction below ℃3-chlorine-4-methyl-7-hydroxycoumarin. 44g 3-chlorine-4- methyl-7-hydroxycoumarin,29ganhydrous potassium carbonate is placed together500mlin methyl ethyl ketone, add dropwise under reflux and stirring40g o,o-diethylphosphorothioate chloride, reflux2h and get fly poison phosphorus.

purpose

fly poison phosphorus-based non-systemic insecticides are particularly effective against dipteran pests. they are also used to control external parasites and are effective in controlling skin flies.

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