Chemical Properties
Light yellow solid or powder at room
temperature. 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, field
crops and other crops and ornamentals against many types
of 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®
Potential Exposure
Metiram is a dithiocarbamate fungicide
used on fruits, vegetables, field crops and other crops
and on ornamentals to protect against many types of fungi
and other foliar diseases.
Shipping
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous
hazardous material, Technical Name Required.
Incompatibilities
Combustible material. Dust may form
explosive mixture in air. Incompatible with oxidizers (chlorates,
nitrates, peroxides, permanganates, perchlorates,
chlorine, bromine, fluorine, etc.); contact may cause fires
or explosions. Keep away from alkaline materials, strong
bases, strong acids, oxoacids, epoxides. Dithiocarbamate
esters are combustible. They react violently with powerful
oxidizers such as calcium hypochlorite. Poisonous gases
are generated by the thermal decomposition of dithiocarbamate
compounds, including carbon disulfide, oxides of
sulfur, oxides of nitrogen, hydrogen sulfide, ammonia, and methylamine. Thio and dithiocarbamates slowly decompose
in aqueous solution to form carbon disulfide and methylamine
or other amines. Such decompositions are accelerated
by acids. Flammable gases are generated by the
combination of dithiocarbamate with aldehydes, nitrides,
and hydrides. Dithiocarbamate are incompatible with acids,
peroxides, and acid halides. Thermal decomposition products
in fire includes oxides of nitrogen and sulfur.
Corrosive to iron, copper brass and zinc metals, especially
in the presence of moisture. Heat alkalies (lime), moisture
can cause decomposition. Decomposes on prolonged storage.
Degradation produces ethylene thiourea.
Waste Disposal
Do not discharge into drains
or sewers. Dispose of waste material as hazardous waste
using a licensed disposal contractor to an approved landfill.
Consult with environmental regulatory agencies for guidance
on acceptable disposal practices. Generators of waste containing
this contaminant (≥100 kg/mo) must conform to
EPA regulations governing storage, transportation, treatment,
and waste disposal. A potential candidate for liquid injection
incineration at a temperature range of 650 to 1600℃ and a
residence time 0.1 to 2 seconds. Also, a potential candidate
for rotary kiln incineration at a temperature range of 820 to
1600℃ and residence times of seconds for liquids and gases,
and hours for solids.
