メタアルデヒド 化学特性,用途語,生産方法
外観
白色、結晶性粉末～粉末
溶解性
水、エタノール及びアセトンにほとんど溶けない。
解説
メタアセトアルデヒド，2,4,6,8-tetramethyl-1,3,5-7-tetroxocane．C8H16O4(176.24)．メタアルデヒドともいう．アセトアルデヒドをメタノール中，酸触媒の存在下で重合させると結晶として得られる．融点246 ℃(封管中)，昇華温度110～120 ℃(常圧)．ベンゼン，クロロホルムに可溶，エタノール，エーテル，水に難溶．希酸と加熱すると容易にアセトアルデヒドになる．一般に，より高分子の環状化合物を含む．ナメクジ用毒餌の成分として駆除剤に用いる(アセトアルデヒドや三量体のパラアルデヒドは無効)．固形燃料としても用いられる．魚毒性が強い．LD50 630 mg/kg(ラット，経口)．
用途
ナメクジ駆除剤
使用上の注意
光に不安定である。アルゴン封入
化学的特性
Metaldehyde is a white crystalline powder
with a mild menthol odor.
使用
There are over 50 pesticides containing metaldehyde registered
for use in the United States.
It is commonly used as a pesticide against slugs and snails. It
is formulated in ready to use liquid, paste, granules, pellets,
minipellets, or meal baits. It is also used as a camping fuel. It
may be purchased in a tablet form for the latter use.
农业用途
Molluscicide: A tetramer of acetaldehyde, metaldehyde is a molluscicide used in a variety of vegetable and ornamental
crops in the field or greenhouse. It may be formulated
with or without calcium arsenate and is also available in a
mixed formulation with thiram. A U.S. EPA restricted Use
Pesticide (RUP).
製品名
ANTIMILACE®; ARIOTOX®;
CEKUMETA®; DEADLINE®; DURHAM®;
HALIZAN®; LIMATOR®; META®; METASON®;
NAMEKIL®; SLUG-TOX®; TRAILS END®
安全性プロファイル
Human poison by ingestion. Human systemic effects by ingestion: convulsions or effect on seizure threshold. Moderately toxic by inhalation and skin contact. Experimental reproductive effects. Mutation data reported. A flammable solid. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES.
職業ばく露
It is used as a poison for slugs and
snails, and as a fuel in small heaters.
環境運命予測
Metaldehyde is of low persistence in the soil. It is degraded
aerobically with a half-life of approximately 67 days to inactive
residues. Metaldehyde is soluble in water. Metaldehyde
undergoes rapid hydrolysis to acetaldehyde in an aquatic
environment.
輸送方法
UN1332 Metaldehyde, Hazard Class: 4.1;
Labels: 4.1-Flammable solid
不和合性
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
メタアルデヒド 上流と下流の製品情報
原材料
準備製品