Bromacil
Features:
1) Chemical name: 5-bromo-3-sec-butyl-6-methyluracil
2) Molecular formula: C9H13BrN2O2
3) Molecular weight: 261.1
4) CAS number: 314-40-9
5) Specification: 95% tech, 80% WP
6) Physical and chemical properties:
a) Pure bromacil is colourless crystal solid
b) Solubility (25°C): 815mg/L in water; 96g/kg 0.9M in NaOH, 201g/kg in
acetone, 77g/kg in acetonitrile, 155g/kg in ethanol, 33g/kg in toluene
c) Can be decomposed by strong acid
d) Formulation for water-solubility couldn't mix with toluene
e) Salt with calcium may cause deposit
7) Toxicity:
a) Acute oral LD50: 5,200mg/kg (rat)
b) Acute percutaneous LD50: above 5,000mg/kg (rabbit)
8) Stimulation to skin of young guinea pigs, no stimulation to grow up guinea pigs
9) Acute inhalation LD50: above 4.8mg/L (rat)
10) 2 year feeding trials NOEL:250mg/kg diet for rats and dogs; LD50 (96h)
10,000mg/L for mallard and quail; sunfish 71mg/L; rainbow trout 75mg/L;carp
164mg/L
11) Functions:
a) No selective systemic herbicides
b) Controls ruderal with 5 - 15kg AI/ha, annual and perennial ruderal with
2 - 4kg/ha, years ruderal with 3.2 - 8.0kg/ha and 1.8 - 5.5kg/ha in pineapple
c) Effect may be kept more than one season in high dosage
Packing:
25kg/fibre drum
Clopyralid (BSI, ANSI, draft E-ISO, (m) Draft F-ISO)
Features:
1) Chemical name: 3, 6-dichloropyridine-2-carboxylic acid
2) Molecular formula: C6H3Cl2N2O2
3) Assay: ≥ 95%
4) Molecular weight: 192.0
5) CAS number: 1702-17-6
6) Physical properties:
a) White crystal
b) Vapor pressure: 16MPa (25°C)
c) Solubility in water: 1.0g/kg
d) Solubility in propanone: 153g/kg
7) Toxicity: acute oral for rats, LD50, above 4,300 - 5,000mg/kg
Packing:
25kg/paper drum
Tribenuron-methyl (CAS no. 101200-48-0)
Features:
1) Technical and formulations: 98% Tech, 60%,75% WDG, 20%, 10% WP
2) Chemical name: methyl 2-[[[[N-(4-methoxy-6-methyl-1,3,5-triazin-2-yl) methylamino]
carbonyl]amino] carbonyl]amino]sulfonyl] benzoate
3) Molecular formula: C15H17N5O6S
4) Molecular weight: 241.36
5) Physical and chemical properties:
M.P.: 141°C
V.P.: 20°C at 0.05MPa
Solubility in water 280mg/L at 20°C
Solubility low in organic solvents
6) Application: a kind of selective, systemic and transferring post-emergence herbicide.
It can be absorbed and transferred by the stems and leaves of weeds to prevent
from the division of cell and make the weeds die. It can be stable in soil
for 30-45 days and has no harm to the succeeding crops
Packing: 25kg/drum
