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Introduction:Zineb was used to protect fruit and vegetable crops from a wide range of foliar and other diseases. It was available in the U.S. as wettable powder and dust formulations. Zineb can be formed by combining nabam and zinc sulfate in the spray tank.
Common name: Zineb
another name:Aaphytora Aphytora Asporum Bercema Zinc-ethylenebis(dithiocarbamate)
Chemical Name: zinc ethane-1,2-diylbis(dithiocarbamate)
Empirical formula: C4H6N2S4Zn
Mol. Weight: 276.7802
CAS No.: 12122-67-7
Physical/chemical hazards: Not applicable.
Human health hazards: Harmful if swallowed. Irritating to skin.
Effects of Overexposure:
Eyes: Irritation and inflammation.
Skin: Irritation and inflammation.
Ingestion: N/K (FPN/ORNL).
Inhalation: Irritation and inflammation of nose and throat.
Product analysis by acid hydrolysis, converting the carbon disulfide evolved into dithiocarbonate which is estimated by titration with iodine (CIPAC Handbook, 1992, E, 230-235; ibid., 1998, H, 100; AOAC Methods, 17th Ed., 965.15) or by liberation of arsenic which is determined spectrophotometrically (CIPAC Handbook, 1992, E, 231). Identified colorimetrically (CIPAC Handbook, 1994, F, 320) or by u.v. absorbance (ibid., p. 411). ETU content by hplc with u.v. detection, or by paper chromatography (ibid., 1994, F, 399). Determination of zinc ibid., 1994, F, 235. Residues determined by acid hydrolysis, measuring the carbon disulfide evolved using glc (Analyst (London), 1981, 106, 782) or by conversion to a copper/amine complex which is estimated by colorimetry (Pestic. Anal. Man., 1979, II; Manu. Pestic. Residue Anal., 1987, I, S21; Anal. Methods Residues Pestic., 1988, Part II; W. K. Lowen & H. L. Pease, Anal. Methods Pestic., Plant Growth Regul. Food Addit., 1964, 3, 69).
Reviews FAO/WHO 68, 70 (see part 2 of the Bibliography). IARC ref. 12 class 3 Oral Acute oral LD50 for rats >5200 mg/kg. Skin and eye Acute percutaneous LD50 for rats >6000 mg/kg. Slight irritation of skin and mucous membranes. NOEL In feeding trials, growth was inhibited in rats within 74 w at 10 000 mg/kg diet. ADI (JMPR) 0.03 mg/kg b.w. (group ADI with mancozeb, maneb and metiram); ethylenethiourea 0.004 mg/kg b.w. . Other At very high doses, ethylenethiourea, a trace contaminant and breakdown product of zineb, has caused thyroid effects, tumours and birth defects in laboratory animals. Toxicity class WHO (a.i.) U; EPA (formulation) IV EC classification Xi; R37| R43
Fish LC50 for perch 2, roach 6-8 mg/l. Bees Not toxic to bees.
EHC 78 (WHO, 1988; general review of dithiocarbamates). Plants Ethylenethiourea is the major metabolite in plants. Ethylenethiuram monosulfide and presumably ethylenethiuram disulfide and sulfur are also formed.
Packing: required by customer
Usage: Its uses include control of downy mildews, rusts and redfire disease.In the US it was once registered as a "General Use Pesticide", however all registrations were voluntarily cancelled following an EPA special review. It continues to be used in many other countries. Zineb has been described to interfere with glucocorticoid metabolism, by inhibiting the activity of the enzyme 11beta-hydroxysteroiddehydrogenase type 2, which converts cortisol to cortisone.
Application:Biochemistry Non-specific thiol reactant, inhibiting respiration. Mode of action Foliar fungicide with protective action. Uses Control of downy mildews in vines, hops, lettuce, onions, spinach, brassicas, oilseed rape, tobacco, and ornamentals; rusts in currants, berry fruit, plums, vegetables, and ornamentals (especially carnations and chrysanthemums); red fire disease on vines; potato and tomato blights; leaf spot diseases on currants, berry fruit, olives, and celery; anthracnose on beans, vines, and citrus fruit; scab on apples and pears; shot-hole on stone fruit; Cercospora on bananas; tulip fire; Botrytis; needle cast in forestry; etc. Phytotoxicity Non-phytotoxic, except for zinc-sensitive plants such as tobacco and cucurbits.
Customerized Packing label
Zineb FAO standard