トリオキシメチレン 化学特性,用途語,生産方法
外観
白色もしくは無色粉末～結晶
解説
化学式 C3H6O3 。トリオキシメチレンは，トリオキサン，メタホルムアルデヒドともいう。無色の結晶。融点 64℃，沸点 114.5℃。弱酸性で加水分解されるが，中性，アルカリ性では安定である。ホルムアルデヒド3分子が環状に重合した構造をもつ。さらに重合すると鎖状の高分子ポリオキシメチレンを生じる。
ブリタニカ国際大百科事典 小項目事典 ブリタニカ
用途
アセタール共重合樹脂製造原料
化学的特性
Trioxane is a most unusual chemical. It is an excellent solvent for many classes of materials. Concentrated aqueous solutions of trioxane have solvent properties which are not possessed by trioxane itself. Molten trioxane dissolves numerous organic compounds, such as naphthalene, urea, camphor, dichlorobenzene, etc. It is stable in alkaline or neutral solutions, yet it is depolymerized to formaldehyde by small amounts of strong acid or acid-forming materials, and the rate of depolymerization can be readily controlled.
使用
1,3,5-Trioxane is used in organic chemical processes such as aldol condensation of amides and syntheses of chloromethyl esters or other plastics.
定義
ChEBI: A saturated organic heteromonocyclic parent that is cyclohexane in which the carbon atoms at positions 1, 3 and 5 are replaced by oxygen atoms.
一般的な説明
Transparent crystals or white crystalline solid with a pleasant odor resembling the odor of chloroform. Melts at 62°C; boils at 115°C without polymerization. The cyclic trimer of formaldehyde.
空気と水の反応
Highly flammable. Water soluble.
反応プロフィール
s-Trioxane is stable under normal laboratory conditions but is unstable in the presence of acids, which initiate polymerization. Sublimes readily. May react with oxidizing matter . A stable polymeric product of formaldehyde that in the presence of strong aqueous acids will depolymerize (reforming the parent formaldehyde). Inert to strong alkalis. Readily converted in non aqueous solutions to the monomeric formaldehyde by small concentrations of acid---the rate of conversion is directly proportional to the concentration of the acid.
健康ハザード
ACUTE/CHRONIC HAZARDS: s-Trioxane is toxic and flammable. It can emit toxic fumes on contact with acid or acid fumes.
火災危険
s-Trioxane is combustible.
安全性プロファイル
Mutation data reported.
Can evolve toxic formaldehyde fumes when
heated strongly or in contact with strong
acids or acid fumes. Flammable liquid when
exposed to heat, flame, or oxidzers. May
explode when heated. Explosive in the form
of vapor when exposed to heat or flame.
Explodes on impact, possibly due to
peroxide contamination. Mixtures with
hydrogen peroxide are explosives sensitive
to heat, shock, or contact with lead.
Mixtures with liquid oxygen are highly
explosive. Incompatible with oxidizing
materials. To fight fire, use foam, CO2, or
dry chemical. When heated to
decomposition it emits acrid smoke and
irritating fumes. See also
FORMALDEHYDE.
職業ばく露
Paraformaldehyde is used in polyacetal
resin manufacture; as a food additive; and as an
odorless fuel.
輸送方法
UN2213 Paraformaldehyde, Hazard Class: 4.1;
Labels: 4.1-Flammable solid.
純化方法
Crystallise 1,3,4-trioxane from sodium-dried diethyl ether or water, and dry it over CaCl2. It can also be purified by zone refining. [Beilstein 19 H 381, 19 II 392, 19 III/IV 4710, 19/9 V 103.]
不和合性
Paraformaldehyde dust forms an explosive
mixture with air. Decomposes on contact with oxidizers,
strong acids; acid fumes; and bases; with elevated temperatures,
forming formaldehyde. May explode when heated.
May explode on impact if peroxide contamination develops.
Mixtures with hydrogen peroxide or liquid oxygen are
explosives sensitive to heat, shock, or contact with lead.
廃棄物の処理
Dissolve or mix the material
with a combustible solvent and burn in a chemical incinerator
equipped with an afterburner and scrubber. All federal,
state, and local environmental regulations must be observed.
トリオキシメチレン 上流と下流の製品情報
原材料
準備製品
5-(クロロメチル)-1,3-ベンゾジオキソール
1,1,1,2-テトラクロロ-3-(2,3,3,3-テトラクロロプロポキシ)プロパン
CHLOROMETHYL ISO-PROPYL ETHER
3,4-メチレンジオキシフェニルアセトニトリル
クロロメチルメチルエーテル
N-(エトキシメチル)-N-(2-エチル-6-メチルフェニル)-2-クロロアセトアミド
5-クロロ-2-テニルクロリド
グリシン
water-proofing agent PF
CHLOROMETHYL BUTYL ETHER
クロロメチルエチルエーテル
methyl triC^{9～11^} alkyl ammonium chloride
3-メチルクロトン酸メチル
1,3,5-トリアジン-1,3,5(2H,4H,6H)-トリス(エタノール)