Difluormethan

Bezeichnung:Difluormethan

CAS-Nr75-10-5

Englisch Name:Difluoromethane

CBNumberCB6175830

SummenformelCH2F2

Molgewicht52.02

MOL-Datei75-10-5.mol

Synonyma

Difluormethan

Difluormethan physikalisch-chemischer Eigenschaften

Schmelzpunkt	−136 °C(lit.)
Siedepunkt	−51.6 °C(lit.)
Dichte	1.1 g/mL at 25 °C(lit.)
Brechungsindex	1.1960
CAS Datenbank	75-10-5(CAS DataBase Reference)
NIST chemische Informationen	Methane, difluoro-(75-10-5)
EPA chemische Informationen	HFC-32 (75-10-5)

Sicherheit

Kennzeichnung gefährlicher	F,F+
R-Sätze:	11-12
S-Sätze:	9-16-33
RIDADR	UN 3252 2.1
WGK Germany	1
RTECS-Nr.	PA8537500
Hazard Note	Flammable
TSCA	T
HazardClass	2.1
HS Code	2903392100
Giftige Stoffe Daten	75-10-5(Hazardous Substances Data)
Toxizität	LC50 inhalation in mouse: 1810gm/m3

Gefahreninformationscode (GHS)

Difluoromethane Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
S-Sätze Betriebsanweisung:
S9:Behälter an einem gut gelüfteten Ort aufbewahren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
Chemische Eigenschaften
Difluoromethane is a colorless and flammable gas that has a light ethereal odor with poor warning properties.
Verwenden
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.
synthetische
Difluoromethane(HFC-32) is manufactured in closed systems. Possible routes are hydrodechlorination of chlorodifluoromethane (HCFC-22) and hydrofluorination of dichloromethane.
Definition
ChEBI: Difluoromethane is a member of fluoromethanes. It has a role as a refrigerant.
Allgemeine Beschreibung
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.
Air & Water Reaktionen
Highly flammable. Insoluble in water. Easily ignited by heat, sparks or flames. Forms explosive mixtures with air
Reaktivität anzeigen
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.
Health Hazard
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.
Brandgefahr
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.

Difluoromethane Upstream-Materialien And Downstream Produkte

75-10-5, Difluoromethane Verwandte Suche:

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