4-Methylpentan-2-ol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT.
PHYSIKALISCHE GEFAHREN
Die Dämpfe sind schwerer als Luft und können sich am Boden ausbreiten. Fernzündung möglich.
CHEMISCHE GEFAHREN
Reagiert mit starken Oxidationsmitteln.
ARBEITSPLATZGRENZWERTE
TLV: 25 ppm (als TWA); 40 ppm (als STEL); Hautresorption; (ACGIH 2005).
MAK: 20 ppm, 85 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Schwangerschaft: Gruppe D (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe und über die Haut.
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. Exposition kann Bewusstseinstrübung verursachen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Die Flüssigkeit entfettet die Haut.
LECKAGE
Belüftung. Ausgelaufene Flüssigkeit möglichst in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Kanalisation spülen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R37:Reizt die Atmungsorgane.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
colourless liquid
Verwenden
(^+)-4-Methyl-2-pentanol is employed as a solvent in organic synthesis, dyes and stains, natural resins and waxes. It is an additive to surface coatings. It finds applications in the manufacture of lube oil additives, zinc dialkyldithiophosphate, brake fluids. It is the precursor to some plasticizers and frother in mineral flotation. It acts as a corrosion inhibitor and also utilized in the characterization of volatile fraction of mono varietal wines and tar sand mining processes.
Vorbereitung Methode
Methyl isobutyl carbinol is prepared commercially as a byproduct
of the synthesis of methyl isobutyl ketone.
Allgemeine Beschreibung
A clear colorless liquid. Flash point 120°F. Less dense than water. Vapors heavier than air.
Air & Water Reaktionen
Flammable. Soluble in water.
Reaktivität anzeigen
4-Methyl-2-pentanol is an alcohol. 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. 4-Methyl-2-pentanol is incompatible with strong oxidizers .
Hazard
Moderate fire risk, explosive limits in air 1–
5.5%. Eye and upper respiratory tract irritant, and
central nervous system impairment.
Health Hazard
Vapor irritates eyes and nose; may cause anesthesia. Prolonged contact with liquid causes irritation and cracking of skin; also irritates eyes.
Brandgefahr
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Chemische Reaktivität
Reactivity with Water: No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Sicherheitsprofil
Moderately toxic by
ingestion, skin contact, and intraperitoneal
routes. Mildly toxic by inhalation. A skin
and severe eye irritant. Inhalation of high
concentrations can cause anesthesia.
Flammable liquid when exposed to heat or
flame; can react with oxidizing materials. A
moderate explosion hazard when exposed to
heat or flame. To fight fire, use alcohol
foam. When heated to decomposition it
emits acrid smoke and fumes.
mögliche Exposition
MIBC is used as a solvent; in the formulation of brake fluids; as an intermediate in organic
synthesis.
Versand/Shipping
UN2053Methyl isobutyl carbinol, Hazard Class: 3;
Labels: 3-Flammable liquid
läuterung methode
Wash the 2-pentanol with aqueous NaHCO3, dry and distil it. Purify it further by converting it to the phthalate ester by adding 120mL of dry pyridine and 67g of phthalic anhydride per mole of alcohol, purifying the ester and steam distilling it in the presence of NaOH. The distillate is extracted with ether, and the extract is dried and fractionally distilled. [Levine & Walti J Biol Chem 94 367 1931, Beilstein 1 IV 1717.]
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 acids, peroxysulfuric
acid, strong bases, caustics, aliphatic amines; isocyanates.
Contact with alkali metals produces hydrogen gas.
Permissibl
Waste disposal
Incineration; other, more
flammable solvent may be added.
4-Methylpentan-2-ol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
