Consentement d'utilisation des Cookies

J'accepte. Notre site sauvegarde des traceurs textes (cookies) sur votre appareil afin de vous garantir de meilleurs contenus et à des fins de collectes statistiques.Vous pouvez désactiver l'usage des cookies en changeant les paramètres de votre navigateur. En poursuivant votre navigation sur notre site sans changer vos paramètres de navigateur vous nous accordez la permission de conserver des informations sur votre appareil.

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

A16295 Tetramethylurea, 99%

Numéro de CAS
632-22-4
Synonymes

Conditionnement Prix ($) Quantité Disponibilité
50g 29,70
250g 112,00
Ajouter au panier Ajouter au devis en vrac Afficher l'article

Tetramethylurea, 99%

MDL
MFCD00008319
EINECS
211-173-9

Propriétés chimiques

Formule
C5H12N2O
Poids moleculaire
116.16
Point de fusion
-1°
Point d'ébullition
176-178°
Point d'éclair
75°(167°F)
Densité
0.969
Indice de réfraction
1.4506
Solubilité
Miscible with water.Miscible with water, petroleum ether and common solvents.

Applications

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.

Notes

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

Références bibliographiques

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.

Mentions de danger et de prudence du SGH

Mentions de danger (UE): H227-H302-H313-H360

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

Mentions de prudence: P210u-P201-P280-P301+P312a-P405-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. IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Autres références

Merck
14,9230
Beilstein
773898
Code tarifaire harmonisé
2924.19
TSCA
Yes
RTECS
YU2625000

Recommandé

  • A11156

    Trichloroacetic acid, 99%
  • A18012

    Oxalyl chloride, 98%
  • L09968

    1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone, 98%
  • 39651

    Tungstosilicic acid hydrate, Reagent Grade
  • 40001

    Triethyl phosphate, 99+%

Consulté récemment

Produits chimiques

Sciences de la vie

Métaux et matériaux

Catalyseurs

Analytique et matériel de laboratoire