1,2,3-Trimethylbenzol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Reagiert mit Oxidationsmitteln unter Feuer- und Explosionsgefahr.
ARBEITSPLATZGRENZWERTE
TLV: 25 ppm (als TWA); (ACGIH 2005).>
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Augen, die Haut und die Atemwege. Möglich sind Auswirkungen auf das Zentralnervensystem. Verschlucken kann zur Aufnahme in der Lunge führen; Gefahr der Aspirationspneumonie.
LECKAGE
Ausgelaufene Flüssigkeit in abgedeckten Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Kanalisation spülen.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R37:Reizt die Atmungsorgane.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
Chemische Eigenschaften
colourless liquid
Physikalische Eigenschaften
Clear, colorless, flammable liquid with an aromatic odor similar to propylbenzene, ethylbenzenes,
or xylenes.
Verwenden
Raw material for chemical synthesis.
Definition
ChEBI: A trimethylbenzene carrying methyl groups at positions 1, 2 and 3. It has been found in Centaurium erythraea.
Hazard
Combustible. Central nervous system
impairment, asthma, and hematologic effects.
Sicherheitsprofil
Mildly toxic by
ingestion, Flammable liquid when exposed
to heat, sparks, or flame. To fight fire, use
water spray, mist, dry chemical, CO2, foam.
When heated to decomposition it emits
acrid smoke and irritating fumes.
mögliche Exposition
(1,2,3-and 1,2,4-isomers): These materials
are used as solvents and in dye and perfume manufacture.
The 1,2,3-isomer is used as raw material in chemical
synthesis and as an UV stabilizer. The 1,2,4-isomer is used
as the raw material for trimellitic anhydride manufacture.
These compounds are found in diesel engine exhaust
fumes.
Environmental Fate
Photolytic. Glyoxal, methylglyoxal, and biacetyl were produced from the photooxidation of
1,2,3-trimethylbenzene by OH radicals in air at 25 °C (Tuazon et al., 1986a). The rate constant for
the reaction of 1,2,3-trimethylbenzene and OH radicals at room temperature was 1.53 x 10
-11
cm
3/moleculesec (Hansen et al., 1975). A rate constant of 1.49 x 10
-8 L/moleculesec was reported
for the reaction of 1,2,3-trimethylbenzene with OH radicals in the gas phase (Darnall et al., 1976).
Similarly, a room temperature rate constant of 3.16 x 10
-11 cm
3/moleculesec was reported for the
vapor-phase reaction of 1,2,3-trimethylbenzene with OH radicals (Atkinson, 1985). At 25 °C, a
rate constant of 2.69 x 10
-11 cm
3/moleculesec was reported for the same reaction (Ohta and
Ohyama, 1985). 2,3-Butanedione was the only products identified from the OH radical-initiated
reaction of 1,2,4-trimethylbenzene in the presence of nitrogen dioxide. The amount of 2,3-
butanedione formed decreased with increased concentration of nitrogen dioxide (Bethel et al.,
2000).
Chemical/Physical. 1,2,3-Trimethylbenzene will not hydrolyze because it does not contain a
hydrolyzable group (Kollig, 1993).
Versand/Shipping
UN3295 Hydrocarbons, liquid, n.o.s., Hazard
Class: 3; Labels: 3-Flammable liquid. UN1993 Flammable
liquids, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid,
Technical Name Required. 1,3,5-Trimethylbenzene;
UN2325, Hazard Class: 3; Labels: 3-Flammable liquid.
1,2,4-Trimethylbenzene:
Inkompatibilitäten
Vapors may form explosive mixture with
air. Incompatible with oxidizers (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.
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.
1,2,3-Trimethylbenzol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
2,3-Dimethylbenzaldehyde
2,6-Dimethylbenzoesure
3,4,5-TRIMETHYLBENZOIC ACID
2,3,4-TRIMETHYLBENZENESULFONIC ACID
Benzaldehyde, 2,3,4-trimethyl- (6CI,8CI,9CI)
