Common name: Tralkoxydim
Chemical name(IUPAC): 2-[1-(ethoxyimino)propyl]-3-hydroxy-5-mesitylcyclohex-2-enone
Molecular formula: C20H27NO3
Molecular weight: 329.4
Physical chemistry: Form Slight white powder,M.p.106(tech.,99-104)V.p 3.7¨¬¡§|10-4mpa(20) S.g./density 1.16(25).Solubility In water 6(pH5), 6.7(Ph6.5), 9800(pH9).In hexane 18,methanol 25,acetone 89,ethyl acetate 110,toluene 213,dichloromethane>500(all in g/l,24).Stability Stable>12w(15-25),4w(50).DT50(25) 6d(Ph5) ,113d(Ph7);after 28d.87%unchanged(Ph9).
Use: Post-emergence control of Avena spp.and other grass weeds(including Lolium spp.,Setaria viridis,Phalaris spp.,Alopecurus myosuroides and Apera spica-venti)in wheat and barley.Applied at 150-400g/ha.
Common name: Bromacil
Chemical name: 5-bromo-3-sec-butyl-6-methyluracil(l)
Molecular formula: C9H13BrN2O2
Molecular weight: 261.1
Physical chemistry: Form similar white crystals. M.p. 157.5-160. V.p.4.1¨¢10-2mPa(25) M.p.157.5-160. Solubility In water 807(Ph5),700(Ph 7),1287(Ph9)(all in mg/l 25).In ethanol 134,acetone 167,acetonitrile 71,xylene32.3%,aqueous sodium hydroxide 88(all in g/l,25). Stability Thermally stable up to the melting point.Stable in aqueous bases.Slowly decomposed by concentrated acids.
Use Totel weed and brush control on non-crop land at 5-15kg a.i./ha.Also for selective control of annual and perennial weeds and grasses in citrus and pineapple plantations at rates in the range 1.5-8kg/ha.
Itemindex
Triasulfuron content %, (w/w) ²95.0
Appearancefine white powder
Water %, 0.5
Acidity ( calculated as h2so4 ) %, 0.2
Stabilitystable for more than 2 years under normal storage conditions. Partial decomposition below the melting point. On hydrolysis, dt50 8.2 h (ph 1), 3.1 y (ph 7), 4.7 h (ph 10)
Chemical name: 2-Chrolo-|¨¢,|¨¢,|¨¢-trifluoro-p-totyl-3-ethoxy-4-nitrophenyl ethyl
Molecular formula: C15H11CIF3NO4
Molecular Weight: 361.7.
Physical chemistry: Form slight yellow powder, S.g./density 1.35(73), M.p.85-90; (tech,.65-84) V.p.(pure a.i)0.0267 mPa(25). Solubility In water 0.116mg/l(25). Readily soluble in most organi solvents,e.g.acetone 72.5,cyclohexanone,isophorone 61.5,dimethylformamide>50,chloroform 50-55,mesityl oxide 40-50(all in g/100g,25), Decomposed rapidly by u.v.Irradiation.
Use: Control of annual broad-leaved weeds and grasses in a variety of tropical and subtropical crops,by pre- or post-emergence application at rates in the range0.25-2.0kg a.i./ha.Particular crops include tree fruit(including citrus), vines, nuts, cereals, maize, soya beans, peanuts, rice,cotton,bananas,peppermint,onions,garlic,ornamental trees and shrubs,and conifer seedbeds.When it is used in the field of fruit it can be mixed with Glyphosate to strengthen the efficiency.
Common Name: Tebuthiuron
Chemical Name: N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N'-dimethylurea
Molecular Formula: C9H16N4OS
Molecular Weight: 228.3
Physical Chemistry:
Form Colourless, odourless solid. M.p. 162.85. B.p. decomp.c.275. V.p. 0.04mPa(25, gas saturation method). Kow logP=1.82(20). Henry 3.0¨¢10-5 Pa m3mol-1(calc.). Solubility in water 2.57g/l(20). In benzene 3.7, hexane 6.1, 2-methoxyethanol 60, acetonitrile 60, acetone 70, methanol 170, chloroform 250(all in g/l, 25). Stability Stable at 52(highest storage temperature tested). Stable in aqueous media between pH 5 and 9. On hydrolysis, DT50(25)>64d (pH 3, 6 and 9).
Use:
Broad-spectrum herbicide for control of herbaceous and woody plants (0.6-4.5kg/ha), annual weeds (1.3-4.5kg/ha), many perennial grass and broad-leaved weeds (2.2-6.8kg/ha). Uses include total control of vegetation in non-crop areas, undesirable woody plants in pastrues and rangeland, and grass and broad-leaved weeds in sugar cane.
