Dacthal Chemical Properties
- Melting point:
- Boiling point:
- 448.04°C (rough estimate)
- 1.6496 (rough estimate)
- refractive index
- 1.5282 (estimate)
- Water Solubility
- 0.05 g/100 mL
- CAS DataBase Reference
- 1861-32-1(CAS DataBase Reference)
- NIST Chemistry Reference
- 2,3,5,6-Tetrachloro-1,4-benzenedicarboxylic acid dimethyl ester(1861-32-1)
- EPA Substance Registry System
- Chlorthal-dimethyl (1861-32-1)
Dacthal Usage And Synthesis
Colorless to gray crystalline solid. Practically odorless.
Selective, nonsystemic, preemergent herbicide to control most annual grasses and many broad-leaved weeds.
DCPA is an alkyl phthalate; benzene- dicarboxylic acid herbicide, pesticide pre-emergent herbi- cide is used on annual broadleaf weeds and grasses in a wide spectrum of vegetable crops.
Soil. Bartha and Pramer (1967) reported that DCPA was degraded by soil microorganisms via cleavage of the herbicide molecule into propionic acid and 3,4-dichloroaniline. The acid was mineralized to carbon dioxide and water and two molecules of 3,4-dichloroaniline were condensed to form 3,3′4,4′-tetrachloro-azobenzene. Metabolites identified in soil and turfgrass thatch are monomethyl tetrachloroterephthalate and 2,3,5,6-tetrachloroterephthalic acid (Hartley and Kidd, 1987; Krause and Niemczyk, 1990). Residual activity in soil and the half-life in soil were reported to be approximately 3 months (Hartley and Kidd, 1987; Worthing and Hance, 1991)
UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.
May react violently with strong oxidi- zers, bromine, 90% hydrogen peroxide, phosphorus trichloride, silver powders or dust. Incompatible with silver compounds. Mixture with some silver compounds forms explosive salts of silver oxalate.
Incineration in a unit with efficient gas scrubbing. Containers must be disposed of properly by following package label directions or by con- tacting your local or federal environmental control agency, or by contacting your regional EPA office.
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- Dimethyl fumarate
- Dimethyl ether
- Dimethyl phthalate
- Terephthalic acid
- Dimethyl terephthalate
- Dimethyl Glutarate
- ACETYL-COA: ORTHOPHOSPHATE ACETYLTRANSFERASE
- Dimethyl sulfide
- Dimethyl sulfate
- dibutyl terephthalate
- Dimethyl sebacate
- Dimethyl sulfoxide
- DIMETHYL-D6 TETRACHLOROTEREPHTHALATE