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Mancozeb Fungicide

Posted at: Offers to Sell and Export | Posted on: Fri 18 Jun, 2010 8:15 am | Product Category: Fungicides [22]
 
mancozeb fungicide
Products Photos CatalogMancozeb Fungicide Photos Catalog



Common name: mancozeb; mancozèbe; manzeb

IUPAC name: manganese ethylenebis(dithiocarbamate) (polymeric)


complex with zinc salt

Chemical Abstracts name: [[1, 2-ethanediylbis[carbamodithioato]](2-)]manganese mixture with [[1, 2-ethanediylbis[carbamodithioato]](2-)]zinc

CAS RN: [8018-01-7] (formerly [8065-67-6]); [8018-01-7] is also applied to other mixed manganese and zinc ethylenebis(dithiocarbamate) complexes

Physical chemistry

Composition: The ISO definition is 'a complex of zinc and maneb containing 20% of manganese and 2.55% of zinc, the salt present being stated (for instance mancozeb chloride)'. Form: Greyish-yellow powder. M.p.: Decomposes at 192-204 șC. V.p.: Negligible at 20 șC. S.g./density: 1.92. Solubility: In water 6.2 ppm (pH 7.5, 25 °C). Insoluble in most organic solvents; dissolves in solutions of powerful chelating agents but cannot be recovered from them. Stability: Stable under normal, dry storage conditions. Slowly decomposed by heat and moisture. On hydrolysis (25 șC), DT50 20 d (pH 5), 17 h (pH 7), 34 h (pH 9). Mancozeb a.i. is unstable and the tech. not isolated; the formulated product is produced in continuous process. F.p.: 137.8 șC (Tag open cup).

Applications

Biochemistry: Non-specific thiol reactant, inhibiting respiration.

Mode of action: Fungicide with protective action.

Uses: Control of many fungal diseases (e.g. blight, leaf spot, rust, downy mildew, scab, etc.) in field crops, fruit, nuts, vegetables, ornamentals, etc. Particular uses include control of early and late blights of potatoes and tomatoes (at 1.36 kg a.i./ha); Rhizoctonia solani and Streptomyces scabies on seed potatoes; leaf spot diseases on celery, cucurbits, beet, berries and currants; rusts on cereals, vegetables, roses, carnations, asparagus, beans, apples and plums (at 1.6 kg/ha); downy mildews on hops, vines, onions, leeks, lettuce, cucurbits, ornamentals and tobacco; Gloeodes pomigena, Glomerella cingulata, Microthyriella rubi and Physalospora obtusa on apples; scab on apples and pears (at 2.4-3.6 kg/ha); sigatoka disease (Cercospora musae) in bananas; shot-hole of stone fruit; anthracnose of beans and cucurbits; damping-off diseases of vegetables; black leg of beet; needle cast in forestry; and many seed-borne diseases of cereals. Used for foliar application or as a seed treatment.

Formulation types: DP; DS; SC; WG; WP.

Mammalian toxicology

Oral: Acute oral LD50 for rats >5000 mg/kg.

Skin and eye: Acute percutaneous LD50 for rats >10 000, rabbits >5000 mg/kg. Mild to moderate skin irritant; moderate eye irritant.

Inhalation: LC50 (4 h) for rats >5.14 mg/l.

ADI: 0.03 mg/kg b.w. (group ADI with maneb, metiram and zineb); ethylenethiourea 0.004 mg/kg b.w.

Other: At very high levels, mancozeb has caused birth defects in test animals; ethylenethiourea, a trace contaminant and breakdown product of mancozeb, has caused thyroid effects, tumours and birth defects in laboratory animals.

Toxicity class: WHO (a.i.) III (Table 5); EPA (formulation) IV

EC hazard: Xi; R37| R43

Ecotoxicology

Birds: In 10-day dietary studies, there were no mortalities in mallard ducks at 6400 mg/kg daily, and in Japanese quail at 3200 mg/kg daily.

Fish: LC50 (48 h) for goldfish 9.0, rainbow trout 2.2, catfish 5.2, carp 4.0 mg/l.

Bees: LC50 0.193 mg/bee.

Environmental fate

Plants: Extensively metabolised in plants, forming ethylenethiourea, ethylenethiuram monosulfide, ethylenethiuram disulfide, and sulfur as transitory intermediates. Terminal metabolites are natural products, especially those derived from glycine.

Soil/Environment Rapidly degraded in the environment by hydrolysis, oxidation, photolysis, and metabolism. DT50 in soil c. 6-15 d. Koc >2000.



Company Contact:

No member photo
Contact Name: Kevin Xu
Company Name: Shanghai Skyblue Chemical Co., Ltd.
Email: Email
Tel: 86-21-58356613
Fax: 86-21-58358362
Street Address: Rm 15A02, Changhang
Mansion, No.800, Zhangyang Road,
Pudong, Shanghai, 200122, China
Website: http://www.skybluechem.com
Member name: skybluechem
Country: China-CN China
Member Since: 17 June 2010
Total Leads: 76 skybluechem Import Export Business Leads
Business focus: Piperonyl Butoxide, D-allethrin, Diethyltoluamide, Cartap, Tetramethrin, Atrazine, Quizalofop-p-ethyl, Tribenuron-methyl, Acetochlor, Ametryn, Simazine
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Product Category: Fungicides [22]
 
 
 

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