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

A10813 Levulinic acid, 98%

Codice CAS
123-76-2
Sinonimi
4-Ketopentanoic acid
4-Oxopentanoic acid

Dimensioni Prezzo ($) Quantità Disponibilità
250g 34,80
1000g 95,10
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Levulinic acid, 98%

MDL
MFCD00002796
EINECS
204-649-2

Proprietà chimiche

Formula
C5H8O3
Peso formula
116.12
Punto di fusione
26-31°
Punto di ebollizione
245-246°
Punto di infiammabilità
137°(278°F)
Densità
1.134
Indice di rifrazione
1.4415
Sensibilità
Light Sensitive
Solubilità
Soluble in water ( 675g/L at 20°C).

Applicazioni

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).

Note

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

Letteratura

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).

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H302-H314-H318

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

Dichiarazioni precauzionali: P280-P305+P351+P338-P309-P310a

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/doctor

Altri riferimenti

Merck
14,5472
Beilstein
506796
Classe di rischio
8
Gruppo di imballaggio
III
Codice tariffe armonizzato
2918.30
TSCA
Yes
RTECS
OI1575000

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