bromacil
95%tech, 80%wp,
Herbicide
NOMENCLATURE
Common name bromacil (BSI, E-ISO, (m) F-ISO, ANSI, WSSA, JMAF)
IUPAC name 5-bromo-3-sec-butyl-6-methyluracil
Chemical Abstracts name 5-bromo-6-methyl-3-(1-methylpropyl)-2,4(1H,3H)-pyrimidinedione
CAS RN [314-40-9] Development codes DPX N976 (Du Pont)
PHYSICAL CHEMISTRY
Mol. wt. 261.1 M.f. C9H13BrN2O2 Form Colourless crystals. M.p. 157.5-160 ¡ãC V.p. 4.1 ´ 10-2 mPa (25 ºC) KOW logP = 1.88 (pH 5) S.g./density 1.59 (23 ºC) Solubility In water 807 (pH 5), 700 (pH 7), 1287 (pH 9) (all in mg/l, 25 ºC). In ethanol 134, acetone 167, acetonitrile 71, xylene 32, 3% aqueous sodium hydroxide 88 (all in g/l, 25 ºC). Stability Thermally stable up to the melting point. Stable in aqueous bases. Slowly decomposed by concentrated acids. pKa 9.27, v. weak acid
APPLICATIONS
Biochemistry Photosynthetic electron transport inhibitor at the photosystem II receptor site. Mode of action Herbicide, absorbed mainly through the roots, with slight absorption through the leaves and stems. Uses Total weed and brush control on non-crop land at 5-15 kg a.i./ha. Also for selective control of annual and perennial weeds and grasses in citrus and pineapple plantations at rates in the range 1.5-8 kg/ha. Formulation types GR; SL; WP. Compatibility Water-soluble formulations are incompatible with ammonium sulfamate and liquid preparations of amitrole. Herbicides containing soluble calcium salts form precipitates when used with water-soluble formulations of bromacil.
|
product name |
bromacil 95%tc |
bromacil 80% wp |
|
a.i.content |
95.3% |
80.2% |
|
appearance |
off-white powder |
type white powder |
|
water |
1.0 % |
0.2% |
|
insoluble matter in acetone |
0.1% |
|
|
fineness |
|
99.1% passing 400 mesh |
|
suspensibility |
|
89% |
|
wetting time(s) |
|
30s |
|
ph value: |
|
6.0 |
