Chemical Property of Chlorsulfuron
Chemical Property:
- Appearance/Colour:Colorless crystal
- Melting Point:174-178 °C
- Refractive Index:1.617
- Boiling Point:563oC
- PKA:4.21±0.10(Predicted)
- PSA：131.55000
- Density:1.536 g/cm3
- LogP:2.89710
- Storage Temp.:0-6°C
- XLogP3:2.3
- Hydrogen Bond Donor Count:2
- Hydrogen Bond Acceptor Count:7
- Rotatable Bond Count:4
- Exact Mass:357.0298527
- Heavy Atom Count:23
- Complexity:514
- Transport DOT Label:Class 9
- Purity/Quality:
-
98% *data from raw suppliers
Chlorosulfuron *data from reagent suppliers
Safty Information:
- Pictogram(s):
N, 
Xi
- Hazard Codes:N,Xi
- Statements:
50/53
- Safety Statements:
60-61-36-26
- MSDS Files:
-
SDS file from LookChem
Useful:
- Chemical Classes:Pesticides -> Herbicides, Sulfonylurea
- Canonical SMILES:CC1=NC(=NC(=N1)OC)NC(=O)NS(=O)(=O)C2=CC=CC=C2Cl
-
Uses
Intrinsic and super-efficient sulfonylurea herbicide. When absorbed by surfaces or roots of weeds, the agent is conducted to the whole plant. It inhibits the synthesis of branched chain amino acids, valine and leucine by inhibiting the activity of acetyl lactase, thereby stopping cell division, producing chlorosis and withering away to death. It is used to control broadleaf weeds and grass weeds in cereal crop fields, such as goosefoot, polygonum, amaranth, cleaver, piemarker, field bindweed, cirsium arvense, black bindweed, german camomile, setaria viridis, ryegrass, bluegrass, allium macrostemon bunge and so on. Not effective for avena fatua and solanum nigrum. It is used early before or after germination and usually administered after autumn crops are sowed but before germination or after germination of spring weeds. It is more suitable to provide leaf surface treatments after germination. Mix 0.15~0.6 grams of active ingredient per 100m2 with water to spray. It has good effects when mixed with chlortoluron and isoproteron. The crops such as corn, rape and so on are sensitive to the second stubble. It has little effect on the following rice when the dosage exceeds 0.6g.
Chlorsulfuron is a new type of sulfonylurea herbicide developed by DuPont Company of America in 1978. DuPont has turned it into a commercial product from 1981. The product is a super-efficient herbicide with low toxicity characterized by high activity, broad spectrum, selective safety of wheat seedlings. Triazine urea herbicide used to control broad-leaved weeds and some annual grass
weeds. Chlorsulfuron is used as a postemergence herbicide for the
control of dicotyledonous weeds, with excellent safety for
wheat and other cereals crops. While chlorsulfuron is primarily
used to control weeds in cereals, it can also be used in range
and pasture applications. It is currently only used to a minor
extent for nonfood industrial applications and right-of-way
purposes.
-
Description
Chlorsulfuron is one of the first sulfonylurea herbicides
developed and commercialized by DuPont. Dr George Levitt
and his team at DuPont first synthesized chlorsulfuron in 1976,
and it was commercialized for use as a herbicide in 1981. It is
currently registered by DuPont in the United States, Canada,
the European Union, Russia, the Ukraine, Australia, New
Zealand, South Africa, Saudi Arabia, and in several countries of
South America.
Compared with many other herbicides that are applied at
levels of pounds per acre (or kilograms per acre), sulfonylureas
are highly effective at use rates of less than an ounce per acre
(approximately 6 g per acre for chlorsulfuron).
