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

A16295 Tetramethylurea, 99%

CAS 번호
632-22-4
동의어

사이즈 가격 ($) 수량 재고 여부
50g 29.70
250g 112.00
장바구니에 추가 대량 견적에 추가 항목 보기

Tetramethylurea, 99%

MDL
MFCD00008319
EINECS
211-173-9

화학적 특성

화학식
C5H12N2O
화학 식량
116.16
융점
-1°
비등점
176-178°
인화점
75°(167°F)
밀도
0.969
굴절률
1.4506
용해도
Miscible with water.Miscible with water, petroleum ether and common solvents.

용도

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.

참고

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

참조 문헌

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.

GHS 해저드 및 주의 설명서

해저드 설명서 (EU): H227-H302-H313-H360

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

주의 설명서: 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.

기타 참조

Merck
14,9230
바일슈타인
773898
통합 관세 코드
2924.19
TSCA(독성물질규제법)"
Yes
RTECS(화학물질 독성 등록)
YU2625000

권장

  • 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+%

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