Cookies disclaimer

I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.

123-76-2 - Levulinic acid, 98% - 4-Ketopentanoic acid - 4-Oxopentanoic acid - A10813 - Alfa Aesar

A10813 Levulinic acid, 98%

CAS-Nummer
123-76-2
Synonyme
4-Ketopentanoic acid
4-Oxopentanoic acid

Größe Preis ($) Menge Verfügbarkeit
250g 34,21
1000g 96,75
5000g 334,40
Zum Warenkorb hinzufügen Zur Angebotsanfrage hinzufügen Artikel anzeigen

Levulinic acid, 98%

MDL
MFCD00002796
EINECS
204-649-2

Chemische Eigenschaften

Formel
C5H8O3
Molmasse
116.12
Schmelzpunkt
26-31°
Siedepunkt
245-246°
Flammpunkt
137°(278°F)
Dichte
1.134
Brechungsindex
1.4415
Sensitivität
Light Sensitive
Löslichkeit
Soluble in water ( 675g/L at 20°C).

Anwendungen

Mainly used as an intermediate for medicines, agricultural chemical and organic synthesis. Used as raw material of perfume, modifier and solvent of plastics. It is also employed as an additive of polymer, paints and lubricating oil. Also used as a surfactant and auxiliary for making printing ink, rubber flux and cosmetics(including shampoo).

Bemerkungen

Light Sensitive. Store in dark. Store away from oxidizing agents and bases.

Literaturverweise

Joseph J Bozell.; L Moens.; D.C Elliott.; Y Wang.; G.G Neuenscwander.; S.W Fitzpatrick.; R.J Bilski.; J.L Jarnefeld. Production of levulinic acid and use as a platform chemical for derived products. Resources, Conservation and Recycling. 2000, 28 (3-4), 227-239.

Jaroslav Horvat.; Branimir Klai?.; Biserka Metelko.; Vitomir Šunji?. Mechanism of levulinic acid formation. Tetrahedron Letters. 1985, 26 (17), 2111-2114.

Alcohols and phenols can be protected as levulinate (Lev) esters. Ester formation has been brought about, e.g. by reaction with an alcohol in the presence of DCC and DMAP: Tetrahedron Lett., 4875 (1976); 23, 2615 (1982). The same references describe facile, selective cleavage by the use of hydrazine hydrate in pyridine/acetic acid. For use of 2-Chloro-1-methyl­pyridinium iodide, A12820, in the formation of Lev esters, see: Tetrahedron Lett., 21, 381 (1980). Alternative cleavage methods include: borohydride in water: J. Am. Chem. Soc., 97, 1614 (1975); MeMgI: benzoate esters unaffected: J. Chem. Soc., Chem. Commun., 681 (1992); sodium sulfite/ bisulfite under neutral conditions, effective for Lev esters of nucleosides, carbohydrates and steroids: Chem. Lett., 585 (1988). Lev esters have also been prepared using 2-Ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline, A13724: Tetrahedon Lett., 23, 2615 (1982).

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H314-H318-H302

Causes severe skin burns and eye damage. Causes serious eye damage. Harmful if swallowed.

Sicherheitshinweise: P280-P305+P351+P338-P309-P310

Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF exposed or if you feel unwell: Immediately call a POISON CENTER or doctor/physician.

Weitere Referenzen

Merck
14,5472
Beilstein
506796
Gefahrenklasse
8
Verpackungsgruppe
III
Harmonized Tariff Code
2918.30
TSCA
Yes
RTECS
OI1575000

Empfohlen

Kürzlich angesehen

Chemikalien

Life science

Metalle und Stoffe

Katalysatoren

Forschungs- und Laborbedarf