2-Methylpentan-2,4-diol Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
CHEMISCHE GEFAHREN
Reagiert mit starken Oxidationsmitteln und starken Säuren.
ARBEITSPLATZGRENZWERTE
TLV: 25 ppm, (als STEL, ceiling); (ACGIH 2005).
MAK: 10 ppm, 49 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(2); Schwangerschaft: Gruppe D; (DFG 2006).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols.
INHALATIONSGEFAHREN
Beim Verdampfen bei 20°C tritt eine gesundheitsschädliche Kontamination der Luft nicht oder nur sehr langsam ein
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Augen, die Haut und die Atemwege.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen.
LECKAGE
Belüftung. Ausgelaufene Flüssigkeit in abgedeckten Behältern sammeln. Verschüttete Flüssigkeit mit viel Wasser wegspülen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R36/38:Reizt die Augen und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
Hexylene Glycol is an oily colorless liquid with a mild sweet odor. It is an oxygenated solvent derived from acetone which has two alcohol functions. It has a low evaporation rate and it is completely miscible with water.
Verwenden
(^+)-2-Methyl-2,4-pentanediol is used to control the flow properties of industrial products such as paints, coatings, cleansers, solvents, and hydraulic fluids. It acts as a thickening agent in cosmetic products. It serves as a coupling agent and an additive to hydraulic fluids, inks and cement. It is also employed as a blood volume expander. Further, it is used as a solvent for cleaning and colorant products. In addition to this, it is used in laboratory studies as a precipitant and cryoprotectant in protein crystallography.
Vorbereitung Methode
2-Methyl-2,4-pentanediol is prepared commercially by the
catalytic hydrogenation of diacetone alcohol . It is used
as a chemical intermediate, a selective solvent in petroleum
refining, a component of hydraulic fluids, a solvent for inks,
and as an additive for cement .
Industrial exposure is likely to be from direct contact or
from inhalation, particularly if the material is heated.
Definition
ChEBI: A glycol in which the two hydroxy groups are at positions 2 and 4 of 2-methylpentane (isopentane).
Allgemeine Beschreibung
Oily colorless liquid with a mild sweet odor. Floats and mixes slowly with water.
Air & Water Reaktionen
Hygroscopic. Water soluble [Hawley]
Reaktivität anzeigen
2-Methyl-2,4-pentanediol is incompatible with the following: Strong oxidizers, strong acids [Note: Hygroscopic (i.e., absorbs moisture from the air).] .
Hazard
Toxic by ingestion and inhalation; irritant to
skin, eyes, and mucous membranes. Combustible.
Health Hazard
Irritation of eyes, nose and throat; headache, dizziness, and nausea.
Chemische Reaktivität
Reactivity with Water No reaction; Reactivity with Common Materials: Can catch fire when in contact with porous materials such as wood, asbestos, cloth, soil, or rusty metals; Stability During Transport: Stable at ordinary temperatures, however when heated this material can decompose to nitrogen and ammonia gases. The decomposition is not generally hazardous unless it occurs in confined spaces; Neutralizing Agents for Acids and Caustics: Flush with water and neutralize the resulting solution with calcium hypochlorite; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
läuterung methode
Dry the diol with Na2SO4, then CaH2 and fractionally distil it under reduced pressure through a packed column, taking precautions to avoid absorption of water. [Beilstein 1 IV 2565.]
2-Methylpentan-2,4-diol Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Di-tert-butyl-1,1,4,4-tetramethyltetramethylendiperoxid
6-Chlorhexan-1-ol
1,6-Diaminohexan
1,6-Dibromhexan
1-Amino-4-hydroxy-2-[(6-hydroxyhexyl)oxy]anthrachinon
2-ISOPROPOXY-4,4,6-TRIMETHYL-[1,3,2]DIOXABORINANE
4-Methylpenta-1,3-dien
4-Methylpent-4-en-2-ol
3-(3-Hydroxy-1,3-dimethylbutoxy)propanenitrile
4,4,6-Trimethyl-2-phenyl-1,3-dioxan
2,2,4-Trimethyl-7-(1,1,3,3-tetramethylbutyl)chroman-6-ol
5,6-Dihydro-4,4,6-trimethyl-2-vinyl-4H-1,3-oxazin
2-(2-Methoxyphenyl)-4,4,6-trimethyl-1,3,2-dioxaborinane
