DYMRON Property

Melting point:

201～206℃

Boiling point:

411.52°C (rough estimate)

Density 

1.0208 (rough estimate)

refractive index 

1.5486 (estimate)

storage temp. 

0-6°C

pka

13.52±0.46(Predicted)

Safety

Toxicity

The acute oral LD₅₀ of male rats is 4000mg/kg and that of male mice is 6500mg/kg; the acute percutaneous LD₅₀ of rats and mice is about 3500mg/kg . No teratogenic, carcinogenic or mutagenic effects were found in chronic toxicity tests. Carp LC₅₀ was 300mg/L (48h).

Hazard and Precautionary Statements (GHS)

DYMRON Chemical Properties,Usage,Production

Chemical Properties

White needle crystal. mp203°C. The solubility at 20°C is: methanol, ethanol 1%, acetone, ether 10%, dimethylformamide 18.2%, dimethyl sulfoxide 20%, insoluble in water. It is stable in the range of pH 2～10 and under heating and ultraviolet light irradiation, and can be hydrolyzed by boiling in 1mol/L hydrochloric acid for 6h.

Uses

Daimuron is a new substituted urea herbicides,it is absorbed by the roots of plants, which can significantly inhibit the elongation of roots and underground stems, so as to control the growth of the above-ground parts.It has special effects on sedge weeds, and can safely control the special-shaped weeds, triangular grasses, and cow hair grasses of crops such as rice, cotton, corn, soybeans, etc., with good results.

Definition

ChEBI: Daimuron is a member of ureas.

Synthesis

Synthesis of daimuron:Add 0.15 mol of p-tolylurea, 0.1 mol of cumene chloride, 48 g of α-methylstyrene and 160 g of acetonitrile, stir and react at 40°C for 6 hours, let stand at room temperature, separate 32 g of crystals, and yield 80%.