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cacodylic acid

Dimethylarsinic acid structural formula

Structural formula

Business number 01JV
Molecular formula C2H7AsO2
Molecular weight 138.00
label

Dimethylarsinic acid,

herbicide

Numbering system

CAS number:75-60-5

MDL number:MFCD00002095

EINECS number:200-883-4

RTECS number:CH7525000

BRN number:1736965

PubChem number:24892235

Physical property data


1. Characteristics: colorless crystals.


2. Density (g/mL,25/4℃): Unsure


3. Relative vapor density (g/mL,AIR=1): Unsure


4. Melting point (ºC):192 -198


5. Boiling point (ºC,Normal pressure): Uncertain


6. Boiling point (ºC,5.2kPa): Unsure


7. Refractive index: Uncertain


8. Flash Point (ºC): Unsure


9. Specific optical rotation (º): Unsure


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


11. Vapor pressure (kPa,25ºC): Unsure


12. Saturated vapor pressure (kPa,60ºC): Unsure


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


14. Critical temperature (ºC): Unsure


15. Critical pressure (KPa): Unsure


16. Oil and water (octanol/Logarial value of partition coefficient for water: Uncertain


17. Explosion limit (%,V/V): Unsure


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


19. Solubility:25Solubility in water at ℃ is200g/100g,Soluble in lower alcohols.



Toxicological data

1, acute toxicity: rat oral administrationLD50644mg/kg; rat by inhalationLCLo2600mg/m3/2H .

Ecological data

It is extremely harmful to water, even in small amounts, to fish and floating fish in water bodies Creatures are poisonous


It is highly toxic to organic matter in the water and fish.

Molecular structure data

None

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP):


2. Number of hydrogen bond donors: 1


3. Number of hydrogen bond acceptors: 2


4. Number of rotatable chemical bonds: 0


5. Number of tautomers:


6. Topological molecular polar surface area (TPSA):37.3


7. Number of heavy atoms: 5


8. Surface charge: 0


9. Complexity: 62


10. Number of isotope atoms: 0


11. Determine the number of atomic stereocenters: 0


12. The number of uncertain atomic stereocenters: 0


13. Determine the number of stereocenters of chemical bonds: 0


14. Uncertain number of chemical bond stereocenters: 0


15. Covalent Number of key units: 1

Properties and stability

Reacts with moisture, air, and oxides.


Storage method

Store airtightly,Store in a cool, dark place Dry warehouse. Avoid contact with moisture, water, and air.

Synthesis method

Reduced by disodium methylarsinate with sulfur dioxide, and then under alkaline conditions It reacts with methyl chloride to form sodium dimethylarsinate, and then it is treated with hydrochloric acid.

Purpose

Used to control weeds in non-crop fields,Dosage1015kg/ha

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