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外観
ほとんど無色〜うすい黄色, 澄明の液体
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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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農薬用途
殺虫剤、ダニ駆除剤
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使用上の注意
アルゴン封入
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説明
Demeton-S-methyl is pale yellow in colour and oily and has a sulphur-like odour. It is
sparingly soluble in water but very rapidly soluble in common polar organic solvents such
as dichloromethane, 2-propanol, toluene, and n-hexane. It is a highly toxic, systemic, and
contact insecticide and acaricide and classified as Category I. It is used for the control of
insects, aphids, sawflies, and spider mites on cereals, fruits, vegetables, and ornamental
plants. On heating, demeton-S-methyl undergoes decomposition and emits very toxic
fumes, phosphorus oxides, and sulphur oxides.
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化学的特性
Demeton-S-methyl is pale yellow in color, oily and has a sulfur-like odor. It is sparingly
soluble in water, but is very rapidly soluble in common polar organic solvents, such as
dichloromethane, 2-propanol, toluene, and n-hexane. It is a highly toxic, systemic, and
contact insecticide and acaricide and is classifi ed as Category I. It is used for the control
of insects, aphids, saw-fl ies, and spider mites on cereals, fruits, vegetables, and ornamental
plants. On heating, demeton-s-methyl undergoes decomposition and emits very toxic
fumes, phosphorus oxides, and sulfur oxides.
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使用
Demeton-S-methyl is a systemic insecticide used to control
sucking insects and mites in a wide range of crops and ornamentals.
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一般的な説明
Pale yellow oil. Used as an insecticide. Not registered as a pesticide in the U.S.
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反応プロフィール
Organophosphates, such as DEMETON-S-METHYL, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.
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健康ハザード
DEMETON-S-METHYL inhibits the nervous system and is absorbed readily through the skin. DEMETON-S-METHYL is a liquid organophosphorus insecticide. Poisonous; may be fatal if inhaled, swallowed or absorbed through skin. Contact may cause burns to skin and eyes.
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火災危険
When heated to decomposition, DEMETON-S-METHYL emits very toxic fumes of oxides of phosphorus and sulfur. DEMETON-S-METHYL is a liquid organophosphorus insecticide. DEMETON-S-METHYL may burn but does not ignite readily. Container may explode in heat of fire. Fire may produce irritating or poisonous gases. Runoff from fire control water may give off poisonous gases. Hydrolyzed by alkali.
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安全性プロファイル
Poison by ingestion,
inhalation, sh contact, intraperitoneal, and
intravenous routes. Mutation data reported.
An insecticide. When heated to
decomposition it emits very toxic fumes of
POx and SOx. See also DEMETON-0 +
DEMETON-S and other demeton entries.
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職業ばく露
An organophosphate insecticide.
Those engaged in the manufacture, formulation and appli-
cation of the insecticide and acaricide on agricultural and
horticultural crops.
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代謝経路
The initial step for the biotransformation and photolytic activation of
demeton-S-methyl is by thiooxidation to oxydemeton-methyl; consequently
the metabolism of the two insecticides is very similar and
metabolic routes determined for oxydemeton-methyl should be taken as
applicable to the behaviour of demeton-S-methyl in the same system.
Most studies on the biotransformations of these compounds have used
oxydemeton-methyl.
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貯蔵
Demeton-S-methyl should be kept stored separately and away from food and feedstuffs.
Keep in a well-ventilated room.
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輸送方法
UN3278 Organophosphorus compound, liquid,
toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous
materials, Hazard Technical Name Required, Potential
Inhalation Hazard (Special Provision 5). UN3017
Organophosphorus pesticides, liquid, toxic, flammable,
flash point not , 23
C, Hazard class: 6.1; Labels: 6.1-
Poisonous materials, 3-Flammable liquid. UN2810 Toxic
liquids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-
Poisonous materials, Technical Name Required.
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不和合性
ncompatible 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, and epoxides. Strong oxidi-
zers may cause release of toxic phosphorus oxides.
Organophosphates, in the presence of strong reducing
agents such as hydrides, may form highly toxic and
flammable phosphine gas. Keep away from alkaline
materials.
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廃棄物の処理
The thiono-and thiolo-isomers of
this mixture are 50% hydrolyzed in 75 minutes and 0.85 min-
ute, respectively @ 20℃
and pH 13. At pH 9 and 70 ℃
, the
half-life of Demeton is 1.25 hour, but an pH 1-5 it is over
11 hours. Sand and rushed limestone may be added together
with a flammable solvent; the resultant mixture may be burned
in a furnace with afterburner and alkaline scrubber
.In
accordance with 40CFR165, follow recommendations for the
disposal of pesticides and pesticide containers. Must be dis-
posed 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
During handling and use of demeton-S-methyl, occupational workers should use a face
shield or eye protection in combination with breathing protection, protective gloves, and
protective clothing. During use and handling of the chemical substance, workers should
not eat, drink, or smoke during work and wash hands before eating. Workers should
prevent generation of chemical mists and observe strict hygiene.
