structural formula

business number	01jv
molecular formula	c2h7aso2
molecular weight	138.00
label	dimethylarsinic acid, herbicide

• 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: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 administrationld50：644mg/kg; rat by inhalationlclo：2600mg/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,dosage10～15kg/ha

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