Nicosulfuron 95%TC 4%SC 75%WDG Herbicide Cas No 111991-09-4 Control Grassy Weeds in Various Crops in Agriculture Agrochemicals

Active ingredient

Nicosulfuron

Chemical name

2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamide

Classification

Herbicide / Agrochemical

Biochemistry

Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acids valine
and isoleucine, hence stopping cell division and plant growth. Maize selectivity derives from selective metabolism (P450-mediated
pyrimidine-5-hydroxylation, followed by conjugation with glucose).

Mode of action

Selective systemic herbicide, absorbed by the foliage and roots, with rapid translocation in xylem and phloem to the meristematic
tissues.

Usage

Selective post-emergence control in maize of annual grass weeds including Setaria, Echinochloa, Digitaria, Panicum, Lolium, and
Avena spp., broad-leaved weeds including Amaranthus spp. and Cruciferae, and perennials such as Sorghum halepense and Agropyron
repens. Applied at 35-70 g/ha.

Mammalian Toxicology

Oral: Acute oral LD50 for male and female rats and mice >5000 mg/kg.
Skin and eye: Acute percutaneous LD50 for male and female rats >2000 mg/kg. Moderate eye irritant; not a skin irritant (rabbits);
not a skin sensitiser (guinea pigs). The 75% formulation is not an eye irritant.
Inhalation: LC50 for rats (4 h) 5.47 mg/l.

Certificate of quality

Nicosulfuron 95% TC

Item
Appearance
Content of a.i.
Water
Acidity (as H2SO4)

Specification
White crystalline or powders
≥95%
≤0.5%
≤0.3%

Nicosulfuron 40g/L SC

ItemAppearance
Content of a.i.
Suspensibility
Wet sieve (through 44µm sieve)
pH

SpecificationWhite to tan suspension liquid
≥40g/L
≥80%
≥98%
3-7

Nicosulfuron 75% WDG

Item
Appearance
Content of a.i.
Wetting time
Wet sieve (through 44µm sieve)
Suspensibility
Dispersibility

Specification
Flowable granules
≥75%
≤20s
≥98%
≥70%
≥70%