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外観
白色, 結晶性粉末〜粉末
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溶解性
水に難溶 (0.035g/L)。多くの有機溶媒に可溶。水35mg/l(25℃)。ジクロロメタン150,アセトン8, メタノール5, キシレン3(全てg/kg 25℃)。エタノールに溶け、水にほとんど溶けない。
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説明
Thiodicarb, 3,7,9,13-tetramethyl-5,11-
dioxa-2,8,14-trithia-4,7,9,12-tetra-azapentadeca-3,12-di
ene-6,10-dione (IUPAC), consists of colorless crystals, which
are sparingly soluble in water, readily soluble in
dichloromethane, acetone, methanol, and xylene.
Thiodicarb is produced by reaction of N,N -thiobis(methylcarbamic
acid fluoride) with 2-methylthioacetaldoxim in the presence of a base.
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使用
Thiodicarb is used as an insecticide.
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一般的な説明
Colorless to pale tan crystals. Non corrosive. Used as an insecticide.
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空気と水の反応
Hydrolyzed by strong acid or base.
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反応プロフィール
A carbamate derivative. 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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农业用途
Insecticide, Molluscicide, Ovicide: Not approved for use in EU countries. Registered
for use in the U.S. Thiodicarb is used primarily on cotton,
sweet corn, and soybeans. The remaining usage is spread
among leafy vegetables, cole crops, ornamentals, and
other minor use sites. Thiodicarb acts as an ovicide against
cotton bollworms and budworms.
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製品名
CGA® 45156; CHIPCO[C];
DICARBOSULF®; DICARBASULF®; LARVIN®;
LEPICRON®; SEMEVIN®; NIVRAL®; UC-51762®;
UC 51769®; UC 80502®
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環境運命予測
Soil. Under aerobic and anaerobic soil conditions, thiodicarb degrades to methomyl
and methomyl oxime (Hartley and Kidd, 1987). The reported half-life in various soils is
3–8 days (Hartley and Kidd, 1987).
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代謝経路
The initial metabolic reaction of thiodicarb in soils, plants and animals
is the hydrolytic or thiolytic cleavage of the N-S bond to methomyl.
The subsequent metabolic pathway of methomyl involves hydrolysis /
elimination reactions to yield S-methyl-N-hydroxythioacetimidate and
ultimately acetonitrile and CO2 as the major terminal products. The metabolic
pathways of thiodicarb are presented in Scheme l. See also the
methomyl entry.
