Amidosulfuron

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Amidosulfuron

中文通用名

酰嘧磺隆

IUPAC

1-(4,6-dimethoxypyrimidin-2-yl)-3-mesyl(methyl)sulfamoylurea

CAS

N-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N-methylmethanesulfonamide

CAS No.

120923-37-7

Molecular Formula

C₉H₁₅N₅O₇S₂

Molecular Structure

General Product Information

Category

Herbicides > Sulfonylurea Herbicides

Activity

Herbicide.
Amidosulfuron is a systemic herbicide intended for spring control of cleavers (Galium aparine). It is primarily absorbed by the leaves of plants but is also absorbed through the roots. Weeds die within six weeks of treatment. Amidosulfuron may be applied from early post-emergence of the crop until GS 49. Cleavers are controlled from emergence through to budding. The product is active at temperatures as low as 2^oC but may only stunt the growth of weeds rather than kill them at these temperatures. The application rate in cereals may be reduced if amidosulfuron is tank-mixed with other broadleaf herbicides. The company recommends only one application per season.
In field trials, amidosulfuron has been shown to be safe on crops grown in rotation with cereals, including oilseed rape, sugar beet and sunflowers, which are sensitive to the product.

CropUse

Crop uses:
wheat, barley, oats, rye, triticale, flax, linseeds

Winter cereals:	30 g ai/ha
Spring cereals:	30 g ai/ha
Pastures:	45 g ai/ha
Flax:	30 g ai/ha
Linseed	30 g ai/ha

Premix

MCPA+Amidosulfuron
Florasulam+Amidosulfuron
Amidosulfuron+iodosulfuron-methyl-sodium

Type	AI concⁿ
Water-dispersible granule (WG)	50% (w/w) 75% (w/w)

Water dispersible granules. Premix Parters: bifenthrin; tralomethrin.

Physical & Safety Data

Physical Properties

Fine, white powder. Molecular weight: 369.4 g/mol;Melting point 160-163℃. Density approx. 1.5 g/cm3.

Toxicology

(Rat): Oral LD₅₀ >5000 mg/kg. Dermal LD₅₀ >5000 mg/kg.

Environmental Profile

WATER SOLUBILITY: 9 mg/l at 20℃(pH 5.8)

Mallard duck	LD₅₀ >2,000 mg/kg Rainbow trout _{[96 hrs]} LC₅₀ >320 mg/litre
Bobwhite quail	LD₅₀ >2,000 mg/kg

Fate in :
Fate in soil:
Amidosulfuron is degraded by microbes in the soil; the half-life is less than 30 days. Degradation in soil is unaffected by soil type and pH. It has low soil mobility. Fate in aquatic systems:
Amidosulfuron has a half-life of 29-120 days in natural systems. Degradation is faster in systems with high organic content.

Transport Information

Signal Word:CAUTION; Hazard Class:III (Slightly hazardous)