1,3,5-Trioxan Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R37:Reizt die Atmungsorgane.
R63:Kann das Kind im Mutterleib möglicherweise schädigen.
S-Sätze Betriebsanweisung:
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.
Chemische Eigenschaften
Trioxane is a most unusual chemical. It is an excellent solvent for many classes of materials. Concentrated aqueous solutions of trioxane have solvent properties which are not possessed by trioxane itself. Molten trioxane dissolves numerous organic compounds, such as naphthalene, urea, camphor, dichlorobenzene, etc. It is stable in alkaline or neutral solutions, yet it is depolymerized to formaldehyde by small amounts of strong acid or acid-forming materials, and the rate of depolymerization can be readily controlled.
Verwenden
1,3,5-Trioxane is used in organic chemical processes such as aldol condensation of amides and syntheses of chloromethyl esters or other plastics.
Definition
ChEBI: A saturated organic heteromonocyclic parent that is cyclohexane in which the carbon atoms at positions 1, 3 and 5 are replaced by oxygen atoms.
Allgemeine Beschreibung
Transparent crystals or white crystalline solid with a pleasant odor resembling the odor of chloroform. Melts at 62°C; boils at 115°C without polymerization. The cyclic trimer of formaldehyde.
Air & Water Reaktionen
Highly flammable. Water soluble.
Reaktivität anzeigen
s-Trioxane is stable under normal laboratory conditions but is unstable in the presence of acids, which initiate polymerization. Sublimes readily. May react with oxidizing matter . A stable polymeric product of formaldehyde that in the presence of strong aqueous acids will depolymerize (reforming the parent formaldehyde). Inert to strong alkalis. Readily converted in non aqueous solutions to the monomeric formaldehyde by small concentrations of acid---the rate of conversion is directly proportional to the concentration of the acid.
Health Hazard
ACUTE/CHRONIC HAZARDS: s-Trioxane is toxic and flammable. It can emit toxic fumes on contact with acid or acid fumes.
Brandgefahr
s-Trioxane is combustible.
Sicherheitsprofil
Mutation data reported.
Can evolve toxic formaldehyde fumes when
heated strongly or in contact with strong
acids or acid fumes. Flammable liquid when
exposed to heat, flame, or oxidzers. May
explode when heated. Explosive in the form
of vapor when exposed to heat or flame.
Explodes on impact, possibly due to
peroxide contamination. Mixtures with
hydrogen peroxide are explosives sensitive
to heat, shock, or contact with lead.
Mixtures with liquid oxygen are highly
explosive. Incompatible with oxidizing
materials. To fight fire, use foam, CO2, or
dry chemical. When heated to
decomposition it emits acrid smoke and
irritating fumes. See also
FORMALDEHYDE.
mögliche Exposition
Paraformaldehyde is used in polyacetal
resin manufacture; as a food additive; and as an
odorless fuel.
Versand/Shipping
UN2213 Paraformaldehyde, Hazard Class: 4.1;
Labels: 4.1-Flammable solid.
läuterung methode
Crystallise 1,3,4-trioxane from sodium-dried diethyl ether or water, and dry it over CaCl2. It can also be purified by zone refining. [Beilstein 19 H 381, 19 II 392, 19 III/IV 4710, 19/9 V 103.]
Inkompatibilitäten
Paraformaldehyde dust forms an explosive
mixture with air. Decomposes on contact with oxidizers,
strong acids; acid fumes; and bases; with elevated temperatures,
forming formaldehyde. May explode when heated.
May explode on impact if peroxide contamination develops.
Mixtures with hydrogen peroxide or liquid oxygen are
explosives sensitive to heat, shock, or contact with lead.
Waste disposal
Dissolve or mix the material
with a combustible solvent and burn in a chemical incinerator
equipped with an afterburner and scrubber. All federal,
state, and local environmental regulations must be observed.
1,3,5-Trioxan Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
5-Chlor-1,3-benzodioxol
Bis(2,3,3,3-tetrachlorpropyl)ether
CHLOROMETHYL ISO-PROPYL ETHER
3,4-(Methylendioxy)phenylacetonitril
Chlormethyl-methylether
2-Chlor-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)acetamid
2-Chloro-5-chloromethylthiophene
Glycin
water-proofing agent PF
CHLOROMETHYL BUTYL ETHER
Chlormethoxyethan
methyl triC^{9～11^} alkyl ammonium chloride
Methyl-3-methyl-2-butenoat
2,2',2''-(Hexahydro-1,3,5-triazin-1,3,5-triyl)triethanol
