Benomyl Fungicide benzimidazloe
Features:
1) Common name: benomyl
2) Structural formula:
3) Chemical name: methyl l-(butylcarbamoyl)benzimidazol-2-ylcarbamate
4) Molecular formula: C
14H
18N
4O
5) Molecular weight: 290.3
6) CAS no.: 17804-35-2
Physical-chemical properties:
1) Appearance: white crystalloid
2) Melting point: 140
oC (decomp.)
3) V.p.: <5.0 x 10
-3 mPa (25
oC)
4) K
OW: logP=l.37
5) S.g./density: bulk density 0.38
6) Solubility:
a) In water 3.6 (pH5), 2.9 (pH7), 1.9 (pH9) (all in μg/L, room temperature)
b) In chloroform 94, acetone 18, dimethylformamide 53, xylene 10, ethanol 4, heptane
0.4 (all in g/kg. 25
oC)
7) Stability:
a) Decomposed by strong acids and strong alkalis
b) Stable to light
c) Stable under dry conditions
d) Easily decomposed into carbendazim in water or plant media
Technical specifications:
1) Benomyl 95% tech.
2) Appearance: white fiber laxity powder
3) a.i. content: 95.0% (minimum)
4) Moisture content: 0.1 % (maximum)
5) pH value: 5 - 7
Formulation: 50WP
Analysis: product analysis by HPLC
Packaging: 25kg/plastic woven bag or cardboard drum lined with plastic bag
Applications:
1) Action: systemic fungicide with protective and curative actions
2) Uses: effective against a wide range of Ascomycetes, Fungi Imperfecti and some
Basidiomycetes in cereals, grapes, pome and stone fruit, rice and vegetables. It
is also effective against mites, primarily as an ovicide. Also used as pre-harvest
spray or dip for the control of storage rots of fruit and vegetables.
3) Typical rates:
a) On field and vegetable crops: 140 - 550 g a.i./ha
b) On tree crops: 550 - 1100 g/ha
c) For post-harvest use: 25 - 200 g/hl
Toxicology:
1) Oral: acute oral LD
50 for rats >5000 mg a.i./kg
2) Skin and eyes: acute percutaneous LD
50 for rabbits >5000mg/kg; negligible
irritant to skin, temporary to eyes (rabbits)
3) Inhalation: LC
50 (4h) for rats > 2mg/L air
4) NOEL: (2y) for rats > 2500 mg/kg diet, no evidence of histopathological changes;
for dogs 500 mg/kg diet
5) ADI: (JMPR) 0.1mg/kg b.w.
6) Birds: eight day dietary LC
50 for mallard ducks and bobwhite quails
> 10000mg/kg diet (using 50% formulation)
7) Fish: LC
50 (96h) for rainbow trout 0.27, goldfish 4.2 mg/L
8) Bees: not toxic to bees LD
50 (contact) > 50 μg/bee
9) Worms: LC Worm: LC
50 (14 d) 10.5mg/kg (14 d) 10.5mg/kg
10) Daphnia LC
50 (48h) 640μg/L
Payment Term: L/C at sight
Price Term: FOB Shanghai
