| Chemical Properties | Light yellow solid or powder at roomtemperature. Characteristic dithiocarbamate odor. |
| Uses | Metriram is a polymeric dithiocarbamic fungicide used in agriculture. Metiram is present as a mixture rather than a complex and is not assigned an ISO name. Metiram is used commonly in the protection of grapevines, apples, tomatoes, potatoes as well as other crops. |
| Definition | ChEBI: Zineb is a polymeric complex of zinc with the ethylene bis(dithiocarbamate) anionic ligand. Formerly used as an agricultural fungicide for the control of downy mildews and rusts, its use is no longer permitted in the US or the EU. It has a role as an antifungal agrochemical. It is a macromolecule, a zinc coordination entity and a dithiocarbamate salt. It contains an ethylenebis(dithiocarbamate). |
| General Description | Yellow powder. Non corrosive. Insoluble in water. Used as an fungicide. |
| Air & Water Reactions | Thio and dithiocarbamates slowly decompose in aqueous solution to form carbon disulfide and methylamine or other amines. Such decompositions are accelerated by acids and bases. Insoluble in water. |
| Reactivity Profile | METIRAM is a dithiocarbamate. Flammable gases are generated by the combination of thiocarbamates and dithiocarbamates with aldehydes, nitrides, and hydrides. Thiocarbamates and dithiocarbamates are incompatible with acids, peroxides, and acid halides. |
| Hazard | Toxic by ingestion and inhalation. |
| Agricultural Uses | Fungicide: Metiram is used to protect fruits, vegetables, fieldcrops and other crops and ornamentals against many typesof fungi and other foliar diseases. |
| Trade name | ATLAS® BRAND[C]; AMAREX®;NIA 9102®[C]; NIAGARA[C]; POLYCARBACIN®;POLYCARBACINE®; POLYCARBAZIN®;POLYCARBAZINE®; POLYMARCIN®;POLYMARCINE®; POLYMARSIN®; POLYMARZIN®;POLYMARZINE®; POLYRAM® |
| Synthesis | Metiram can be obtained by oxidizing and precipitating ethylenedithiocarbamic acid with a soluble zinc salt. |
| Potential Exposure | Metiram is a dithiocarbamate fungicideused on fruits, vegetables, field crops and other cropsand on ornamentals to protect against many types of fungiand other foliar diseases. |
| Shipping | UN3077 Environmentally hazardous substances,solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneoushazardous material, Technical Name Required. |
| Incompatibilities | Combustible material. Dust may formexplosive mixture in air. Incompatible with oxidizers (chlorates,nitrates, peroxides, permanganates, perchlorates,chlorine, bromine, fluorine, etc.); contact may cause firesor explosions. Keep away from alkaline materials, strongbases, strong acids, oxoacids, epoxides. Dithiocarbamateesters are combustible. They react violently with powerfuloxidizers such as calcium hypochlorite. Poisonous gasesare generated by the thermal decomposition of dithiocarbamatecompounds, including carbon disulfide, oxides ofsulfur, oxides of nitrogen, hydrogen sulfide, ammonia, and methylamine. Thio and dithiocarbamates slowly decomposein aqueous solution to form carbon disulfide and methylamineor other amines. Such decompositions are acceleratedby acids. Flammable gases are generated by thecombination of dithiocarbamate with aldehydes, nitrides,and hydrides. Dithiocarbamate are incompatible with acids,peroxides, and acid halides. Thermal decomposition productsin fire includes oxides of nitrogen and sulfur.Corrosive to iron, copper brass and zinc metals, especiallyin the presence of moisture. Heat alkalies (lime), moisturecan cause decomposition. Decomposes on prolonged storage.Degradation produces ethylene thiourea. |
| Waste Disposal | Do not discharge into drainsor sewers. Dispose of waste material as hazardous wasteusing a licensed disposal contractor to an approved landfill.Consult with environmental regulatory agencies for guidanceon acceptable disposal practices. Generators of waste containingthis contaminant (≥100 kg/mo) must conform toEPA regulations governing storage, transportation, treatment,and waste disposal. A potential candidate for liquid injectionincineration at a temperature range of 650 to 1600℃ and aresidence time 0.1 to 2 seconds. Also, a potential candidatefor rotary kiln incineration at a temperature range of 820 to1600℃ and residence times of seconds for liquids and gases,and hours for solids. |
