Methylvinylether Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R12:Hochentzündlich.
S-S?tze Betriebsanweisung:
S9:Beh?lter an einem gut gelüfteten Ort aufbewahren.
S16:Von Zündquellen fernhalten - Nicht rauchen.
S33:Ma?nahmen gegen elektrostatische Aufladungen treffen.
Beschreibung
Methoxyethene (MVE) is a colorless and flammable gas with a sweet and pleasant odor at room temperature. It is heavier than air and can diffuse to a relatively distant place at a lower place. MVE is soluble in ethanol, ether and acetone, but it is only slightly soluble in water. MVE is easily polymerized, so potassium hydroxide is often added as a polymerization inhibitor in the finished product.
Chemische Eigenschaften
Colorless compressed gas, or colorless
liquid. Slightly soluble in water; soluble in alcohol
and ether; easily polymerized. Commercial
material contains a small proportion of polymerization
inhibitor.
Verwenden
Copolymers used in coatings and lacquers;
modifier for alkyl, polystyrene, and ionomer resins;
plasticizer for nitrocellulose and adhesives.
Allgemeine Beschreibung
A colorless gas with a sweet odor. Shipped as a liquefied gas under own vapor pressure. Contact with the liquid may cause frostbite. Easily ignited. Vapors are heavier than air. Leaks may either be liquid or vapor. May asphyxiate by the displacement of air. Under prolonged exposure to fire or intense heat containers may rupture violently and rocket.
Air & Water Reaktionen
Highly flammable. Reacts slowly with water to form acetaldehyde, reaction is not hazardous unless water is hot or acids are present. Form dangerous peroxides when exposed to air.
Reaktivit?t anzeigen
Methoxyethene reacts vigorously with oxidizing materials. Explosive in the form of vapor when exposed to heat, flame or strong oxidizing agents. Reacts, possibly explosively with halogens (bromine, chlorine) or hydrogen halides (hydrogen bromide, hydrogen chloride) [Baker, 1980, p. 487]. On contact with dilute acids or even mildly acidic solids (calcium chloride, ceramics) undergoes rapid, exothermic homopolymerization, which cannot be prevented by antioxidants. Must be stored in the presence of base [MVE Brochure, Billingham, ICI, 1962].
Health Hazard
Inhalation causes intoxication, blurring of vision, headache, dizziness, excitation, loss of consciousness. Liquid or concentrated vapor irritates eyes and causes frostbite of skin. Aspiration of the liquid will cause chemical pneumonitis.
Brandgefahr
Behavior in Fire: Containers may explode. Vapor is heavier than air and may travel a considerable distance to a source of ignition and flash back.
Sicherheitsprofil
Mildly toxic by
ingestion. A very dangerous fire hazard
when exposed to heat, flame, or oxiduers.
Explosive in the form of vapor when
exposed to heat or flame. Can react
vigorously with oxidizing materials. To fight
fire, stop flow of gas. Potentially explosive
reaction with halogens (e.g., bromine,
chlorine) or hydrogen halides (e.g., hydrogen
bromide, hydrogen chloride). Reaction with
acids forms acetaldehyde. Weak acids
catalyze the exothermic polymerization of
the ether. The unstabilized ether can form
dangerous peroxides. When heated to
decomposition it emits acrid smoke and
irritating fumes.
Methylvinylether Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
