maneb
maneb
CAS: 12427-38-2
Molecular Formula: C4H6MnN2S4
maneb - Names and Identifiers
| Name | maneb |
| Synonyms | MEB MAZIN maneb MANZATE POLICRITT TRIMANGOL MULTI-W FL Manganese(Ⅱ)ethylenebis(dithiocarbamate) bis(methylcarbamothioylsulfanyl)manganese Manganese ii ethylenebis(dithiocarbamate) manganese(2+) ethane-1,2-diylbis(dithiocarbamate) ((1,2-ethanediylbis(carbamodithioato))(2-))-manganes |
| CAS | 12427-38-2 |
| EINECS | 235-654-8 |
| InChI | InChI=1/2C2H5NS2.Mn/c2*1-3-2(4)5;/h2*1H3,(H2,3,4,5);/q;;+2/p-2/rC4H8MnN2S4/c1-6-3(8)10-5-11-4(9)7-2/h1-2H3,(H,6,8)(H,7,9) |
maneb - Physico-chemical Properties
| Molecular Formula | C4H6MnN2S4 |
| Molar Mass | 265.3 |
| Density | 1.92 g/cm3(Temp: 25 °C) |
| Melting Point | 131°C |
| Water Solubility | Insoluble in water |
| Vapor Presure | Negligible at 20 °C |
| Appearance | solid |
| Merck | 13,5743 |
| BRN | 3747585 |
| Storage Condition | 0-6°C |
| Sensitive | 7: reacts slowly with moisture/water |
| Physical and Chemical Properties | Yellow powder, used as fungicide. |
maneb - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R43 - May cause sensitization by skin contact R37 - Irritating to the respiratory system R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36 - Irritating to the eyes R20 - Harmful by inhalation R63 - Possible risk of harm to the unborn child |
| Safety Description | S22 - Do not breathe dust. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S46 - If swallowed, seek medical advice immediately and show this container or label. S24/25 - Avoid contact with skin and eyes. S8 - Keep container dry. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. S36/37 - Wear suitable protective clothing and gloves. |
| UN IDs | 2210 |
| WGK Germany | 1 |
| RTECS | OP0700000 |
| TSCA | No |
| Hazard Class | 4.2 |
| Packing Group | III |
| Toxicity | LD50 oral in rat: 3gm/kg |
maneb - Reference Information
| (IARC) carcinogen classification | 3 (Vol. 12, Sup 7) 1987 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | the acute oral LD50 of rats is 10000mg/kg, the acute oral LD50 of rabbits is> 10000mg/kg, and the oral non-acting dose of rats for 90d is 16mg/kg. LC50 for carp was 14.0mg/L (48h). It has irritating effect on rabbit skin and mucous membrane. No triple phenomenon was seen in animal experiments. |
| use | broad-spectrum protective fungicide. It is effective for various vegetable and fruit tree diseases. Spray 500~700 times of 70% wettable powder can prevent and control vegetable early blight, gray mold, downy mildew and melon anthracnose. In addition, it can also be used to prevent fruit tree scab, red star disease, anthracnose, etc. Manganese is a broad-spectrum fungicide with a wide range of applications. Mainly used in vegetables and fruit trees, can prevent various anthracnose, downy mildew, scab, blight, spot disease, etc. It is often used with 400-650 times of 70% wettable powder. According to different diseases, its dosage is 75-750g of original medicine/mu. |
| Production method | is obtained by the reaction of daisenium and manganese oxide. The 40% amosenium was added to the reactor, manganese oxide was added under stirring, and the temperature was raised to 40 ℃ for 2 hours. Cooling, filtering, drying, that is, the generation of manganese. It can also be reacted with manganese chloride and NaHSO3 as stabilizer with a yield of 95%. By the reaction of ethylenediamine and carbon disulfide, sodium dysen is generated in the presence of NaOH (see the preparation method of zinc for the two-step method); sodium dysen reacts with manganese sulfate to generate manganese; manganese dysen reacts with zinc chloride to generate manganese zinc. |
| category | spontaneous combustion items |
| toxicity classification | poisoning |
| acute toxicity | oral-rat LD50: 3000 mg/kg; Oral-mouse LD50:2600 mg/kg |
| flammability hazard characteristics | it is easy to ignite spontaneously in the air; when heated or open flame, it emits nitrogen oxide and sulfur oxide poison mist |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from oxidant and acid |
| fire extinguishing agent | sand, water, foam |
| occupational standard | TWA 5 mg (manganese)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
