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75-98-9 - Trimethylacetic acid, 99% - 2,2-Dimethylpropionic acid - Pivalic acid - A10776 - Alfa Aesar

A10776 Trimethylacetic acid, 99%

CAS-Nummer
75-98-9
Synonyme
2,2-Dimethylpropionic acid
Pivalic acid

Größe Preis ($) Menge Verfügbarkeit
500g 43,67
2500g 159,65
10000g 404,00
Zum Warenkorb hinzufügen Zur Angebotsanfrage hinzufügen Artikel anzeigen

Trimethylacetic acid, 99%

MDL
MFCD00004194
EINECS
200-922-5

Chemische Eigenschaften

Formel
(CH3)3CCO2H
Molmasse
102.13
Schmelzpunkt
31-35°
Siedepunkt
163-165°
Flammpunkt
63°(145°F)
Dichte
0.91
Löslichkeit
Soluble in alcohol, ether. Slightly soluble in water

Anwendungen

Trimethylacetic acid can be used as an internal chemical-shift standard for NMR of aqueous solutions. It is a metabolite of oral cephem (β-lactam) antibiotics such as S-1108, containing pivaloyl moieties.

Bemerkungen

Stable under recommended storage conditions. Incompatible with oxidizing agents and bases.

Literaturverweise

S.Albert; H.S.Gutowsky; J.A.Ripmeester. NMR investigations of solid (CH3)3CCOOH (trimethylacetic acid) and (CH3)3CCOOD. J. Chem. Phys. 1976, 64, (8),3277

 

Alfred L.Miller; Newell C.Cook; Frank C.Whitmore. The Ketonic Decarboxylation Reaction1: The Ketonic Decarboxylation of Trimethylacetic Acid2 and Isobutyric Acid. J. Am. Chem. Soc. 1950, 72, (6),2732-2735

In the presence of an Ag(II) species (from silver nitrate and ammonium persulfate in TFA), tert-butyl radicals are generated. With quinoline, the 2-tert-butyl substituted derivative is formed in high yield: Tetrahedron, 46, 2525 (1990), whereas for most other carboxylic acids, both 2- and 4-substitution usually occur.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H314-H318-H302-H312

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

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
14,7511
Beilstein
969480
Gefahrenklasse
8
Verpackungsgruppe
III
Harmonized Tariff Code
2915.90
TSCA
Yes
RTECS
TO7700000

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