1,1-Difluorethylen

Bezeichnung:1,1-Difluorethylen

CAS-Nr75-38-7

Englisch Name:1,1-DIFLUOROETHYLENE

CBNumberCB7240544

SummenformelC2H2F2

Molgewicht64.03

MOL-Datei75-38-7.mol

Synonyma

1,1-Difluorethylen

1,1-Difluorethen

R1132a

1,1-Difluorethylen physikalisch-chemischer Eigenschaften

Schmelzpunkt	−144 °C(lit.)
Siedepunkt	−83 °C(lit.)
Dichte	0,617 g/cm³
Dampfdichte	2.2 (vs air)
Dampfdruck	518 psi ( 21 °C)
Brechungsindex	1.3225 (estimate)
Flammpunkt	<-60°C
Explosionsgrenze	21.3%
BRN	1733321
Dielectric constant	3.0（Ambient）
CAS Datenbank	75-38-7(CAS DataBase Reference)
IARC	3 (Vol. 39, Sup 7, 71) 1999
EPA chemische Informationen	Vinylidene fluoride (75-38-7)

Sicherheit

Kennzeichnung gefährlicher	F+,F
R-Sätze:	12
S-Sätze:	16-7/9
RIDADR	UN 1959 2.1
OEB	D
OEL	TWA: 1 ppm, Ceiling: 5 ppm [use 1910.1017]
WGK Germany	3
RTECS-Nr.	KW0560000
F	4.5
Selbstentzündungstemperatur	1184 °F
Hazard Note	Flammable
TSCA	T
HazardClass	2.1
HS Code	2903590090
Giftige Stoffe Daten	75-38-7(Hazardous Substances Data)
Toxizität	LCLo inhalation in guinea pig: 800ppb/4H

Gefahreninformationscode (GHS)

1,1-DIFLUOROETHYLENE Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSES KOMPRIMIERTES FLüSSIGGAS MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Das Gas ist schwerer als Luft und kann sich am Boden ausbreiten. Fernzündung möglich. Es kann sich in tiefer gelegenen Bereichen sammeln und den Luftsauerstoff verdrängen. Fließen, Schütten o.ä. kann zu elektrostatischer Aufladung führen.
CHEMISCHE GEFAHREN
Bildung explosionsfähiger Peroxide. Substanz kann polymerisieren und eine große Hitzemenge freisetzen. Feuer- und Explosionsgefahr. Erhitzen kann zu sehr heftiger Verbrennung oder Explosion führen. Zersetzung beim Erhitzen oder Verbrennen unter Bildung giftiger und ätzender Rauche mit Fluorwasserstoff, Fluor und Fluoriden. Reagiert sehr heftig mit Oxidationsmitteln und vielen anderen Stoffen unter Feuer- und Explosionsgefahr.
ARBEITSPLATZGRENZWERTE
TLV: 500 ppm (als TWA); Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
MAK: Krebserzeugend Kategorie 3B; (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation.
INHALATIONSGEFAHREN
Eine gesundheitsschädliche Konzentration des Gases in der Luft wird beim Entweichen aus dem Behälter sehr schnell erreicht.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Schnelle Verdampfung kann zu Erfrierungen führen. Möglich sind Auswirkungen auf das Zentralnervensystem.
LECKAGE
Gefahrenbereich verlassen! Fachmann zu Rate ziehen! Belüftung. Wasserstrahl NIEMALS auf die Flüssigkeit richten. Persönliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabhängigem Atemschutzgerät.
R-Sätze Betriebsanweisung:
R12:Hochentzündlich.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S7/9:Behälter dicht geschlossen an einem gut gelüfteten Ort aufbewahren.
Chemische Eigenschaften
Vinylidene fluoride is a colorless gas. Faint ethereal odor. Shipped as a liquefied compressed gas.
Chemische Eigenschaften
Colorless gas; faint ethereal odor. Slightly soluble in water; soluble in alcohol and ether.
Verwenden
1,1-Difluoroethylene is used in the manufacture of polyvinylidene fluoride for its use as a thermal, chemical, and ultraviolet light–resistant agent, and as an anticorrosive agent. The monofilament form is used as filter cloth in the pulp and paper industry. Due to its high melting temperature, it can be used as an insulator. Some of its copolymers are used for their heat- and moisture-resistant properties, primarily in industrial, aerospace, and automotive applications.
Verwenden
Polymers and copolymers, chemical intermediate.
Definition
ChEBI: Vinylidene fluoride is an organofluorine compound and an olefinic compound.
Allgemeine Beschreibung
1,1-DIFLUOROETHYLENE (or vinylidene fluoride) is a colorless gas which is flammable in the ranges of 5.5 to 21%. 1,1-DIFLUOROETHYLENE is toxic by inhalation and contact. 1,1-DIFLUOROETHYLENE is slightly soluble in water and soluble in alcohol and ether. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.
Reaktivität anzeigen
1,1-DIFLUOROETHYLENE is sensitive to heat. 1,1-DIFLUOROETHYLENE is incompatible with oxidizers. 1,1-DIFLUOROETHYLENE can react violently with hydrogen chloride. Alkyl boron and alkyl hyponitrite compounds initiate polymerization. 1,1-DIFLUOROETHYLENE will form peroxides on exposure to pure oxygen. .
Health Hazard
Vapors may cause dizziness or asphyxiation without warning. Some may be toxic 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. Silane will ignite spontaneously in air. May polymerize explosively when heated or involved in a fire. Vapors from liquefied gas are initially heavier than air and spread along ground. 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.
Sicherheitsprofil
Suspected carcinogen with experimental neoplastigenic data. Mildly toxic by inhalation. Mutation data reported. A very dangerous fire hazard when exposed to heat, flame, or oxidzers. Explosive in the form of vapor when exposed to heat or flame. Violent reaction with hydrogen chloride when heated under pressure. To fight fire, stop flow of gas. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES.
mögliche Exposition
Vinylidene fluoride is used in the formulation of many polymers and copolymers, such as chlorotrifluoroethylene-vinylidene fluoride (Kel F), perfluoropropylene-vinylidene fluoride (Viton, Fluorel); polyvinylidene fluoride; and hexafluoropropylene-tetra-fluoroethylene- vinylidene fluoride; elastomeric copolymers. It is also used as a chemical intermediate in organic synthesis. NIOSH has estimated 32,000 workers are exposed annually.
Environmental Fate
Oxidative metabolism of 1,1-Difluoroethylene is mediated by the hepatic microsomal monooxygenase to form epoxide and the inactivation of hemeprotein.
Versand/Shipping
UN1959 Vinylidene fluoride shipped as 1,1-Difluoroethylene or Refrigerant gas R-1132a, Hazard Class: 2.1; Labels: 2.1-Flammable gas. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.
Toxicity evaluation
1,1-Difluoroethylene is a colorless gas. It is slightly soluble in water, but soluble in organic solvents such as alcohol and ether. Its boiling point is -85°C, melting point is -144°C, specific gravity is 0.617 g cm^-3, and vapor pressure is 3.0×10⁴ mm Hg. Its octane/water partition coefficient is 1.24 and Henry’s law constant is 0.4 atm-m³ mol^-1.
Production and use of 1,1-Difluoroethylene result in its release to the environment through various waste streams. It has medium mobility in soil and degrades in soil. It volatilizes from the contaminated water. Aquatic bioconcentration and adsorption to sediment are not very significant. As a gas form in the atmosphere, it reacts with photochemically produced hydroxyl radicals and degrades.
Inkompatibilitäten
idizers (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, aluminum chloride. Capable of forming unstable peroxides, which can cause explosive polymerization. It can re act violently with hydrogen chloride. Alkyl boron and alkyl hyponitrite compounds initiate polymerization. It will form peroxides on exposure to pure oxygen. May accumulate static electricity, and cause ignition of its vapors.
Waste disposal
Return refillable compressed gas cylinders to supplier.

1,1-DIFLUOROETHYLENE Upstream-Materialien And Downstream Produkte

1,1-Difluorethylen Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

75-38-7, 1,1-DIFLUOROETHYLENE Verwandte Suche:

Send Inquriy