1-Methoxypropan-2-ol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Bildung explosionsfähiger Peroxide wahrscheinlich. Reagiert mit starken Oxidationsmitteln, Säurechloriden, Säureanhydriden, Aluminium und Kupfer.
ARBEITSPLATZGRENZWERTE
TLV: 100 ppm (als TWA); 150 ppm (als STEL); (ACGIH 2005).
MAK: 100 ppm, 370 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(2); Schwangerschaft: Gruppe C; (DFG 2008).
EG Arbeitsplatz-Richtgrenzwerte: 100 ppm, 375 mg/m?(als TWA); 150 ppm, 568 mg/m?(als STEL); Hautresorption (EU 2000).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe oder des Aerosols, über die Haut und durch Verschlucken.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz und der Dampf (in hoher Konzentration) reizen die Augen, die Haut und die Atemwege. Exposition gegenüber sehr hohen Konzentrationen kann zu Depression des Zentralnervensystems führen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Die Flüssigkeit entfettet die Haut.
LECKAGE
Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit viel Wasser wegspülen.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
S-Sätze Betriebsanweisung:
S24:Berührung mit der Haut vermeiden.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
colourless liquid
Verwenden
1-Methoxy-2-propanol acts as a good biological indicator.
Allgemeine Beschreibung
A colorless liquid. Flash point near 89°F. Less dense than water. Contact irritates skin, eyes and mucous membranes. Prolonged exposure to vapors may cause coughing, shortness of breath, dizziness and intoxication. Vapors heavier than air. Used as a solvent and as an antifreeze agent.
Air & Water Reaktionen
Highly flammable. Soluble in water. Oxidizes readily in air to form unstable peroxides that may explode spontaneously [Bretherick 1979 p.151-154, 164].
Reaktivität anzeigen
1-Methoxy-2-propanol is a methoxy alcohol derivative. The ether being relatively unreactive. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides.
Hazard
Flammable, moderate fire risk. TLV: 100
ppm; STEL 150 ppm.
Health Hazard
VAPOR: Irritating to eyes, nose, and throat. LIQUID: Irritating to skin and eyes.
Brandgefahr
FLAMMABLE. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area.
Sicherheitsprofil
Moderately toxic by
intravenous route. Mildly toxic by ingestion,
inhalation, and skin contact. Human
systemic effects by inhalation: general
anesthesia, nausea. A skin and eye irritant.
An experimental teratogen. Many glycol
ethers have dangerous human reproductive
effects. Very dangerous fire hazard when
exposed to heat or flame; can react with
oxidizing materials. To fight fire, use foam,
CO2, dry chemical. When heated to
decomposition it emits acrid smoke and
irritating fumes. Used as a solvent and in
solvent-sealing of cellophane. See also
GLYCOL ETHERS and ETHYLENE
GLYCOL MONOMETHYL ETHER.
mögliche Exposition
Propylene glycol monomethyl ether is
used as a solvent for coatings; cellulose esters and acrylics;
acrylics dyes; inks, and stains. It may also be used as
a heat-transfer fluid.
Versand/Shipping
UN3092 1-Methoxy-2-propanol, Hazard Class: 3;
Labels: 3-Flammable liquid.
Advantages
1-Methoxy-2-propanol has been used as an antifreeze material, principally in ebullient cooling systems and in some heavy-duty diesel engines. Because an azeotrope is formed between 1-methoxy-2-propanol and water, freeze protection also is provided in the vapor phase in ebullient cooling applications. On the other hand, 1-methoxy-2-propanol is more volatile and is more readily expelled along with water vapor through the crankcase vent system. 1-Methoxy-2-propanol also maintains lower metal temperatures than comparative glycolbased coolants. This was an advantage in rotary engines.
Inkompatibilitäten
Vapor 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, acid chlorides, acid anhydrides, isocya-
nates, aluminum, and copper. Hygroscopic (i.e., absorbs
moisture from the air). May slowly form reactive peroxides
during prolonged storage or on exposure to air and light.
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-Methoxypropan-2-ol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
