Carbendazim
Fungicide benzimidazole
Features:
1) Common name: carbendazim
2) Structure formula:
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3) Chemical name: methyl-benzimidazol-2-ylcarbamate
4) Molecular formula: C
9H
9N
3O
2
5) Molecular weight: l91.2
6) CAS no.: 10605-21-7
Physical-chemical properties:
1) Appearance: white crystalline powder
2) M.p.: 302 - 307
oC (decomp.)
3) V.p.: 0.09mPa (20
oC)
4) K
OW: logP=1.38 (pH5), 1.51 (pH7), 1.49 (pH9)
5) S.g./density: 1.45 (20
oC)
6) Solubility:
a) In water at 24
oC, 29 mg/L (pH4), 8mg/L (pH7)
b) In dimethylformamide 5, acetone 0.3, ethanol 0.3, chloroform 0.1, ethyl acetate
0.135, dichloromethane 0.068, benzene 0.036, cyclohexane <0.01, diethyl ether
<0.01, hexane 0.0005 (all in g/L, 24
oC)
7) Stability:
a) Decomposes at m.p.; stable for at least 2y below 50
oC
b) Slowly decomposes in alkaline solution (22
oC)
c) Stable in acids, forming water-soluble salts
Technical specifications:
1) Appearance: white powder
2) a.i.content: >=98%
3) Water: <=0.25%
4) O-PDA: <=0.2%
5) Acidity (H
2SO
4): <=0.2%
Formulation: 50WP
Analysis: LC (GB 10501-89)
Packaging: 25kg/plastic woven bag or cardboard drum lined with plastic bag
Applications:
1) Action: systemic fungicide with protective and curative actions
2) Uses: control of a wide range of diseases on cereals, fruits, grape, oilseed rape,
sugar beet, ornamentals and vegetables. Application rates vary from 120 - 600g/ha
depending on crop. A seed treatment (0.6 - 0.8g/kg) will control Tilletia,
Ustilago, Fusarium and Septoria in cereals and Rhizoctonia in cotton. Also shows
activity against storage diseases of fruit as a dip (0.3 - 0.5g/L). In addition,
it can be used as a mildew-proofing agent in textiles, papermaking, leather
and paint.
Toxicology:
1) Oral: acute oral LD
50 for rats >15 000, dogs >2500mg/kg
2) Skin and eyes: acute percutaneous LD
2 for rabbits >10000, rats >2000mg/kg
3) Non-irritating to skin and eyes (rabbits). Not a skin sensitiser (guinea pigs)
4) Birds: acute oral LD
50 for quails 5826 - 15595mg/kg
5) Fish: LC
50 (96h) for carp 0.61, rainbow trout 0.83mg/L
6) Bees LD
50 (contact) >50ug/bee
7) Daphnia: LD
50 (48h) 0.13 - 0.22mg/L
Payment Term: L/C at sight
Price Term: FOB Shanghai
