メチレンジフルオリド 化学特性,用途語,生産方法
解説
ジフルオロメタン，フロンの一。メタンを構成する水素原子2個を弗素原子2個と置換した化合物。半導体集積回路の製造工程において、ドライエッチングの洗浄剤として用いられる。弗化メチレン。HFC-32。化学式CH2F2
用途
冷却剤
化学的特性
Difluoromethane is a colorless and flammable gas that has a light ethereal odor with poor warning properties.
使用
Difluoromethane is use as refrigerant, as an important component in some refrigeration mixtures, and as a reactive ion etching gas in semiconductor materials processing applications.
製造方法
Difluoromethane(HFC-32) is manufactured in closed systems. Possible routes are hydrodechlorination of chlorodifluoromethane (HCFC-22) and hydrofluorination of dichloromethane.
定義
ChEBI: Difluoromethane is a member of fluoromethanes. It has a role as a refrigerant.
一般的な説明
A colorless odorless gas. Insoluble in water and has a high thermal stability. Its vapors are heavier than air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. Contact with the unconfined liquid can cause frostbite. Used as a refrigerant.
空気と水の反応
Highly flammable. Insoluble in water. Easily ignited by heat, sparks or flames. Forms explosive mixtures with air
反応プロフィール
Difluoromethane can react with some metals to form dangerous products. May react violently with aluminum. Incompatible with strong oxidizing and reducing agents. Also incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides.
健康ハザード
Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases.
火災危険
EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. CAUTION: Hydrogen (UN1049), Deuterium (UN1957), Hydrogen, refrigerated liquid (UN1966) and Methane (UN1971) are lighter than air and will rise. Hydrogen and Deuterium fires are difficult to detect since they burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.) Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.
メチレンジフルオリド 上流と下流の製品情報
原材料
準備製品