Name | Zineb |
Synonyms | Zineb Tiezene Zineb W.P. Dithane Z-78 Zine ethylene-1,2-bisdithiocarbamate zinc ethane-1,2-diylbis(dithiocarbamate) |
CAS | 12122-67-7 |
EINECS | 235-180-1 |
InChI | InChI=1/C4H8N2S4.Zn/c7-3(8)5-1-2-6-4(9)10;/h1-2H2,(H2,5,7,8)(H2,6,9,10);/q;+2/p-1/rC4H6N2S4Zn/c7-3(8)5-1-2-6-4-9-11-10-4/h6H,1-2H2,(H-,5,7,8)/p+1 |
Molecular Formula | C4H6N2S4Zn |
Molar Mass | 275.75 |
Storage Condition | 2-8℃ |
Use | Foliar protective fungicides, mainly used for the control of wheat, vegetables, grapes, fruit trees and tobacco and other crops of a variety of fungal diseases |
Hazard Symbols | Xi - Irritant |
Risk Codes | R37 - Irritating to the respiratory system R43 - May cause sensitization by skin contact |
Safety Description | S8 - Keep container dry. S24/25 - Avoid contact with skin and eyes. S46 - If swallowed, seek medical advice immediately and show this container or label. |
use | broad-spectrum, protective fungicide. It can be used to prevent and control a variety of diseases of rice, wheat, vegetables, grapes, fruit trees, tobacco and other crops, such as wheat rust, corn spot disease, tea red star disease, tobacco blight, anthracnose, wild diseases, peanut brown spot disease, potato blight, scab, black mole disease and apples, pears, peaches, citrus, grapes, vegetables and other diseases. Generally, 80% wettable powder is sprayed 500~800 times. |
use | is a foliar protective fungicide, mainly used to control various fungal diseases of crops such as wheat, vegetables, grapes, fruit trees and tobacco |
use | foliar protective fungicides, mainly used to prevent and control various fungal diseases of crops such as wheat, vegetables, grapes, fruit trees and tobacco |
use | this product is a foliar protective fungicide. It is mainly used to prevent and control various straight bacteria diseases of crops such as wheat, vegetables, grapes, fruit trees and tobacco. |
production method | is obtained by the metathesis of daisenium and zinc oxide. |
production method | First synthesize Dysen sodium. One-step method or two-step method can be used. The two-step method is beneficial to control the generation of by-product sodium trithiocarbonate, with good quality and high yield. The reaction temperature is controlled at <35 ℃, and the dropping acceleration of carbon disulfide is determined by the reaction temperature. Add sodium hydroxide solution in batches, control the alkali temperature at about 35 ℃, and control the pH ≤ 9 in each batch. The 5% sulfuric acid solution is slowly added dropwise to the above-mentioned sodium dysen aqueous solution, and the excess sodium hydroxide and the decomposition by-product sodium trithiocarbonate are neutralized to the pH value of 6-7, and the thiohydrogen gas is eliminated. The neutralized sodium dysen aqueous solution was heated to 40~45 ℃, zinc sulfate aqueous solution was added under stirring, stirred for 30min, centrifuged and separated, washed with clear water, dried at 93kPa at 50~60 ℃ to obtain zinc dysen. |
Toxicity | rats acute oral LD50>5200mg/kg, acute percutaneous LD50>2500mg/kg, feeding dogs for one year no effect dose of 2000mg/kg, mucosal irritation. Carp LC50>40mg/L(48h), non-toxic to bees. |
chemical properties | Pure products are white crystals, and industrial products are white to light yellow powder. Vapor pressure <10-7Pa (20 ℃), relative density 1.74 (20 ℃), flash point> 100 ℃. Soluble in carbon disulfide and pyridine, insoluble in most organic solvents, insoluble in water (10mg/L). It is unstable to light, heat, and humidity, and it is easy to decompose when encountering alkaline substances or copper. Ethylthiourea is found in the decomposition products of zinc, which is more toxic. |
dangerous goods mark | Xi |
hazard category code | 37-43 |
safety instructions | 8-24/25-46 |
dangerous goods transport number | UN 3077 9 / PGIII |
WGK Germany | 3 |
RTECS number | ZH3325000 |
HazardClass | 6.1 |
PackingGroup | III |
customs code | 29309090 |
toxic substance data | 12122-67-7(Hazardous Substances Data) |
Toxicity | LD50 orally in rats: >5000 mg/kg (Gaines) |