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632-22-4 - Tetramethylurea, 99% - A16295 - Alfa Aesar

A16295 Tetramethylurea, 99%

Número CAS
632-22-4
Nombre Alternativo

Tamaño Precio ($) Cantidad Disponibilidad
50g 29,56
250g 111,24
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Tetramethylurea, 99%

MDL
MFCD00008319
EINECS
211-173-9

Propiedades químicas

Fórmula
C5H12N2O
Peso molecular
116.16
Punto de fusión
-1°
Punto de ebullición
176-178°
Punto de inflamabilidad
75°(167°F)
Densidad
0.969
Índice de refracción
1.4506
Solubilidad
Miscible with water.Miscible with water, petroleum ether and common solvents.

Aplicaciones

Tetramethylurea is used as a solvent in dyestuff industries, in condensation reaction and intermediates in surfactant. It is utilized for base catalyzed isomerization and alkylation hydrocyanation due to its low permittivity. It reacts with oxalyl chloride to prepare tetramethyl chloroformamidinium chloride, which is used for the conversion of carboxylic acids and dialkyl phosphates to anhydrides and pyrophosphates respectively.

Notas

Hygroscopic. Keep the container tightly closed in a dry and well-ventilated place. Incompatible with strong oxidizing agents.

Referencias documentales

High-boiling dipolar aprotic solvent. The polar nature, wide liquid range and high solvent power of tetraalkylureas make them suitable solvents for a wide range of reactions; review: Angew. Chem. Int. Ed., 18, 503 (1979).

Reacts with oxalyl chloride to give tetramethyl chloroformamidinium chloride, a useful reagent for the conversion of carboxylic acids and dialkyl phosphates to anhydrides and pyrophosphates respectively: Bull. Chem. Soc. Jpn., 56, 3529 (1983).

Indra, S.; Biswas, R. Hydrogen-bond dynamics of water in presence of an amphiphile, tetramethylurea: signature of confinement-induced effects. Mol. Simul. 2015, 41 (5-6), 471-482.

Krakowiak, J.; Wawer, J. Effect of temperature and ionic strength on volumetric and acoustic properties of solutions of urea alkyl derivatives in aqueous NaCl. J. Chem. Thermodyn. 2015, 90, 232-241.

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H360-H302-H227-H313

May damage fertility or the unborn child. Harmful if swallowed. Combustible liquid. May be harmful in contact with skin.

Indicaciones de precaución: P210-P201-P280-P281-P301+P312-P312-P308+P313-P405-P403+P235-P501a

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Obtain special instructions before use. Wear protective gloves/protective clothing/eye protection/face protection. Use personal protective equipment as required. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. IF exposed or concerned: Get medical advice/attention. Store locked up. Store in a well-ventilated place. Keep cool. Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Merck
14,9230
Beilstein
773898
Código de tarifa arancelaria unificado
2924.19
TSCA
Yes
RTECS
YU2625000

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