1,1-Difluorethylen 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 m?glich. Es kann sich in tiefer gelegenen Bereichen sammeln und den Luftsauerstoff verdr?ngen. Flie?en, Schütten o.?. kann zu elektrostatischer Aufladung führen.
CHEMISCHE GEFAHREN
Bildung explosionsf?higer Peroxide. Substanz kann polymerisieren und eine gro?e Hitzemenge freisetzen. Feuer- und Explosionsgefahr. Erhitzen kann zu sehr heftiger Verbrennung oder Explosion führen. Zersetzung beim Erhitzen oder Verbrennen unter Bildung giftiger und ?tzender 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 K?rper durch Inhalation.
INHALATIONSGEFAHREN
Eine gesundheitssch?dliche Konzentration des Gases in der Luft wird beim Entweichen aus dem Beh?lter sehr schnell erreicht.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Schnelle Verdampfung kann zu Erfrierungen führen. M?glich sind Auswirkungen auf das Zentralnervensystem.
LECKAGE
Gefahrenbereich verlassen! Fachmann zu Rate ziehen! Belüftung. Wasserstrahl NIEMALS auf die Flüssigkeit richten. Pers?nliche Schutzausrüstung: Vollschutzanzug mit umgebungsluftunabh?ngigem Atemschutzger?t.
R-S?tze Betriebsanweisung:
R12:Hochentzündlich.
S-S?tze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S7/9:Beh?lter dicht geschlossen an einem gut gelüfteten Ort aufbewahren.
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.
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.
Reaktivit?t 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.
m?gliche 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.
Inkompatibilit?ten
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-Difluorethylen Upstream-Materialien And Downstream Produkte
Upstream-Materialien
1,1,1-Trichlorethan
1,1-Difluorethan
Fluorsulfons?ure
1-Chlor-1,1-difluorethan
Fluorwasserstoff
Halothan
2,2,2-trifluoroethylphenylsulfone
1-Chloro-1-fluoroethylene
2,3,3,3-TETRAFLUOROPROPENE
3-((Ethenyloxy)methyl)heptan
1,1,1,2-Tetrachlor-2,2-difluorethan
Trichlortrifluorethan
Chlortrifluorethylen
Hexafluorpropen
Downstream Produkte