3-メチルアクリル酸 化学特性,用途語,生産方法
外観
白色～わずかにうすい褐色, 顆粒
溶解性
水、エタノール及びアセトンに溶ける。
解説
炭素数4個の不飽和カルボン酸，CH
3CH＝CHCOOH．二重結合の配置の違いによる幾何異性体があり，トランス形の酸をクロトン酸，シス形の酸をイソクロトン酸という．酢酸ビニルとの共重合体合成に用いられ，塗料，樹脂などの原料になる．
用途
コモノマーの様々な共重合体の合成
用途
有機合成(合成樹脂、医薬、香料、農薬)原料。
化学的特性
Crotonic acid is a white or colorless, crystalline solid with a pungent odor. May be transported as a molten liquid.
使用
Crotonic acid is used in the synthesis of resins, polymers,
plasticizers, and drugs. It is also used as a softening
agent for synthetic rubber and in medicinal chemicals.
定義
Exists in cis and trans isomeric forms, the latter being
the stable isomer used commercially. The cis form
melts at 15C and is sometimes called isocrotonic
acid.
一般的な説明
A white crystalline solid. Shipped as either a solid or liquid. Melting point 59°F. Soluble in water and less dense than water. Flash point 190°F. Corrosive to metals and tissue.
空気と水の反応
Soluble in water.
危険性
Strong irritant to tissue.
健康ハザード
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
火災危険
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
安全性プロファイル
Poison by
intraperitoneal route. Moderately toxic by
ingestion, skin contact, and subcutaneous
routes. A powerful corrosive and irritant.
Flammable when exposed to heat or flame;
can react with oxidizing materials. To fight
fire, use alcohol foam, CO2, dry chemical.
When heated to decomposition it emits
acrid smoke and irritating fumes.
職業ばく露
Used to make plastics, resins, plasticizers, lacquers, and medicines; other chemicals as a chemical intermediate.
輸送方法
UN2823 Crotonic acid, solid, Hazard class: 8; Labels: 8-Corrosive material.
不和合性
May form explosive mixture with air. A strong reducing agent. The aqueous solution is a weak acid. Violent reaction with oxidizers, combustibles, strong bases; peroxides. Moisture or strong sunlight (UV) may cause explosive polymerization. May accumulate static electrical charges, and may cause ignition of its vapors. Combustible when exposed to heat or flame. Compounds of the carboxyl group react with all bases, both inorganic and organic (i.e., amines) releasing substantial heat, water, and a salt that may be harmful. Incompatible with arsenic compounds 938 Crotonic Acid (releases hydrogen cyanide gas), diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, sulfides (releasing heat, toxic, and possibly flammable gases), thiosulfates, and dithionites (releasing hydrogen sulfate and oxides of sulfur).
3-メチルアクリル酸 上流と下流の製品情報
原材料
準備製品