acephate
98%, 95%tech, 75%,50%wp, 40%ec
Insecticide
organophosphorus
NOMENCLATURE
Common name acephate (BSI, E-ISO, (m) F-ISO, ANSI, ESA, JMAF)
IUPAC name O,S-dimethyl acetylphosphoramidothioate
Chemical Abstracts name N-[methoxy(methylthio)phosphinoyl]acetamide
CAS RN [30560-19-1] EEC no. 250-241-2 Development codes Ortho 12 420 (Chevron) Official codes ENT 27 822
PHYSICAL CHEMISTRY
Composition Tech. grade is >97% pure. Mol. wt. 183.2 M.f. C4H10NO3PS Form Colourless crystals; (tech., a colourless solid). M.p. 88-90 ºC; (tech., 82-89 ºC) V.p. 0.226 mPa (24 ºC) KOW logP = -0.89 S.g./density 1.35 Solubility In water 790 g/l (20 ºC). In acetone 151, ethanol >100, ethyl acetate 35, benzene 16, hexane 0.1 (all in g/l, 20 ºC). Stability Hydrolysis DT50 50 d (pH 5-7, 21 ¡ãC), photodegradation DT50 (l = 253.7 nm) 55 h.
APPLICATIONS
Biochemistry Cholinesterase inhibitor. Mode of action Systemic insecticide. Uses Control of a wide range of chewing and sucking insects, e.g. aphids, thrips, lepidopterous larvae, sawflies, leaf miners, leafhoppers, cutworms, etc., at 0.5-1.0 kg/ha, in fruit (including citrus), vines, hops, olives, cotton, soya beans, peanuts, macadamia nuts, beet, brassicas, celery, beans, potatoes, rice, tobacco, ornamentals, forestry, and other crops. Of moderate persistence, with residual activity lasting c. 10-21 d. Phytotoxicity Non-phytotoxic to most crops, but marginal leaf burn may occur on Red Delicious apples. Formulation types AE; CG; GR; SP; WP.
|
product name |
acephate 98% tc |
acephate 95% tc |
acephate 75% sp |
acephate 50% wp |
acephate 40% ec |
|
appearance |
white powder |
white powder |
white powder |
loose powder |
|
|
a.i.content |
98.2% |
95.3% |
75.06% |
50.6% |
40.3% |
|
moisture |
0.2% |
0.3% |
0.8% |
0.7% |
0.1% |
|
acidity |
0.47% |
0.47% |
|
|
0.5% |
|
acetamide content |
0.2% |
0.2% |
|
|
|
|
methamidophos content |
0.3% |
0.3% |
|
|
|
|
Suspensibility |
|
|
|
83% |
|
|
ph value |
|
|
4.6 |
4.6 |
5.5 |
|
fineness |
|
|
99% |
95.1% |
|
|
wetting time(s) |
|
|
|
23 |
|
