Metsulfuron-methyl 95%tc

Procuct Name:Metsulfuron-methyl 95%TC

CAS No.: 74223-64-6

Description:

Metsulfuron-methyl

Herbicide

HRAC B WSSA 2, sulfonylurea

NOMENCLATURE

Chemical Abstracts name methyl 2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]amino]sulfonyl]benzoate

CAS RN [74223-64-6]

PHYSICAL CHEMISTRY

Mol. wt. 381.4

M.f. C14H15N5O6S

Form Colourless crystals, (tech., off-white solid, with a faint ester-like odour).

M.p. 158 C

V.p. 3.3 10-7 mPa (25C)

KOW logP = -1.74 (pH 7)

Henry 2.3, 10-10 Pa m3 mol-1 (calc.)

S.g./density 1.47

Solubility In water 0.55 (pH 5), 2.79 (pH 7), 213 (pH 9) (all in g/l, 25 C). In hexane 0.00079, xylene 0.58, ethanol 2.3, methanol 7.3, acetone 36, dichloromethane 121 (all in g/l, 20 C).

Stability Stable in air up to c. 140 C. Hydrolysis DT50 (25 C), 22 d (pH 5), stable (pH 7 and 9).
pKa 3.3