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外観
白色, 結晶～結晶性粉末
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溶解性
水、エタノール及びアセトンに溶ける。
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用途
農薬(殺虫剤)
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説明
Acetamide acid (methomyl) is a carbamate broad-spectrum insecticide. Methomyl is
classified as a restricted use pesticide (RUP). It is a crystalline solid with a slight sulphurous
odour and very soluble in methanol, acetone, ethanol, and isopropanol. It decomposes
with heat and releases hazardous gases/vapours, such as sulphur oxides, methyl
isocyanate, and HCN. Acetamide acid (methomyl) is used both as a contact insecticide and
as a systemic insecticide. It is used as an acaricide to control ticks and spiders; as fly bait;
for foliar treatment of vegetable, fruit, field crops, cotton, and commercial ornamentals;
and in and around poultry houses and dairies.
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化学的特性
Methomyl is a white crystalline solid with
a slight sulfurous odor. A noncombustible solid, that may
be dissolved in flammable liquids that may alter physical
properties listed here.
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使用
Methomyl is a pesticide. This mixture of two stereoisomers
is used as a foliar spary to control field crops,
stables and poultry houses, and in glasshouses on
ornamentals and vegetables, or in flypapers. Cases
have been reported in chrysanthemum growers and in
two women working in a plant nursery.
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定義
ChEBI: A carbamate ester obtained by the formal condensation of methylcarbamic acid with the hydroxy group of 1-(methylsulfanyl)acetaldoxime.
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一般的な説明
White crystalline solid with slight sulfurous smell. Used as a nematocide, and an insecticide on vegetables, tobacco, cotton, alfalfa, soy beans, and corn.
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空気と水の反応
Water soluble.
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反応プロフィール
Methomyl is a carbamate ester. Carbamates are chemically similar to, but more reactive than amides. Like amides they form polymers such as polyurethane resins. Carbamates are incompatible with strong acids and bases, and especially incompatible with strong reducing agents such as hydrides. Flammable gaseous hydrogen is produced by the combination of active metals or nitrides with carbamates. Strongly oxidizing acids, peroxides, and hydroperoxides are incompatible with carbamates.
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危険性
Toxic by ingestion. Acetyl cholinesterase
inhibitor, male reproductive damage, and hematologic effects. Questionable carcinogen.
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健康ハザード
Methomyl has high oral toxicity, moderate inhalation toxicity and low skin toxicity. The probable oral lethal dose for humans is between 7 drops and 1 teaspoon for a 150 pound adult. Death is due to respiratory arrest.
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火災危険
When heated to decomposition, Methomyl emits very toxic fumes of nitrogen oxides and sulfur oxides. Do not subject liquid formulations to temperatures below 32F.
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农业用途
Insecticide, Acaricide: Methomyl is a broad-spectrum insecticide that is
particularly effective against organophosphorus-resistant
pests. It is used as an acaricide to control ticks and spiders. It is used for foliar treatment of vegetable, fruit and
field crops, tobacco, cotton, commercial ornamentals, and
in and around poultry houses and dairies. It is also used as
a fly bait. Methomyl is effective as a “contact insecticide,”
because it kills target insects upon direct contact, and also
as a “systemic insecticide” because of its capability to
cause overall “systemic” poisoning in target insects, after
it is absorbed and transported throughout the pests that
feed on treated plants. It is capable of being absorbed by
plants without being “phytotoxic” or harmful, to the plant.
A U.S. EPA restricted Use Pesticide (RUP).
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製品名
ACINATE®; AGRINATE®; CIMETLE®;
DuPont
TM 1179®; FRAM FLY KILL®; FLYTEK®;
IMPROVED BLUE MALRIN SUGAR BAIT®;
IMPROVED GOLDEN MALRIN BAIT®; INSECTICIDE
1179®; KIPSIN®; KUIK®; LANNATE®; LANNOX®;
LANOX 90®; LANOX 216®; METHOMEX®;
METHOMYL® 20SC; MEMILENE®; METHAVIN®;
NU-BAIT II®; NUDRIN®; PILLARMATE®;
RENTOKILL®; RENTOKIL FRAM FLY BAIT®;
RIDECT®; SD 14999®; SOREX GOLDEN FLY BAIT®;
WL 18236®
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接触アレルゲン
Methomyl is a pesticide agent, a carbamate insecticide with anticholinesterase activity. This mixture of two stereoisomers is used as a foliar spray to control field crops, in stables and poultry houses, and in glasshouses on ornamentals and vegetables, or in flypapers. Cases were reported in chrysanthemum growers and in two women working in a plant nursery
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安全性プロファイル
Poison by ingestion,
inhalation, and subcutaneous routes. Mildly
toxic by skin contact. Wen heated to
decomposition it emits very toxic fumes of
NOx and SOx.
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職業ばく露
Methomyl is a broad-spectrum insecticide used as insecticide in many vegetables, field crops;
certain fruit crops; and ornamentals.
Incompatibilities: Keep away from strong bases, strong oxidizers. Heat causes decomposition forming toxic and irritating fumes including nitrogen oxides; sulfur oxides;
hydrogen cyanide; methylisocyanate
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環境運命予測
Biological. From the first-order biotic and abiotic rate constants of methomyl in
estuarine water and sediment/water systems, the estimated biodegradation half-lives were
75–165 and 39–134 days, respectively (Walker et al., 1988).
Soil. Harvey and Pease (1973) reported that methomyl dissipated rapidly in fine sand
and loamy sand soils. One month following application to a Delaware soil, 1.8% of the
applied dosage was recovered and after 1 year, methomyl was not detected. T
Groundwater. According to the U.S. EPA (1986) methomyl has a high potential to
leach to groundwater.
Plant. The reported half-lives of methomyl on cotton plants, mint plants and Bermuda
grass were 0.4–8.5, 0.8–1.2 and 2.5 days, respectively (Willis and McDowell, 1987).
Chemical/Physical. Emits toxic fumes of nitrogen and sulfur oxides when heated to
decomposition (Sax and Lewis, 1987; Lewis, 1990).
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貯蔵
Acetamidic acid (methomyl) should be kept stored in a sealed container in a cool
(below 0
°
C), dry, area with adequate ventilation. The chemical should be kept away
from incompatible chemical substances, strong oxidizing agents, strong bases, other
pesticides, and food or feed.
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輸送方法
UN2757 Carbamate pesticides, solid, toxic,
Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1;
Labels: 6.1-Poisonous materials, Technical Name Required
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廃棄物の処理
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. Alkaline hydrolysis leads to complete degradation to nontoxic products. May be dissolved in water
and sprayed into a furnace with effluent gas scrubbing
also. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package
label directions or by contacting your local or federal
environmental control agency, or by contacting your
regional EPA office.
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予防処置
Occupational workers should avoid contact of acetamidic acid (methomyl) with the skin,
eyes, or clothing, and avoid exposures to vapor or mist. Workers should be careful when
storing and/or disposing of acetamidic acid, avoid the dust contaminating water, food,
or feed by storage or disposal. Workers should use respiratory protection: Government approved respirator. Hand Protection: Compatible chemical-resistant gloves. Eye
Protection: Chemical safety goggles.chemical safety goggles.
