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Merck
CN

87849

Tetramethylurea

≥99.5% (GC)

Synonym(s):

1,1,3,3-Tetramethylurea, TMU

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About This Item

Linear Formula:
(CH3)2NCON(CH3)2
CAS Number:
Molecular Weight:
116.16
EC Number:
211-173-9
UNSPSC Code:
12352100
PubChem Substance ID:
Beilstein/REAXYS Number:
773898
MDL number:
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assay

≥99.5% (GC)

impurities

≤0.3% water

ign. residue

≤0.05%

refractive index

n20/D 1.451 (lit.), n20/D 1.452

pH

5-8 (25 °C, 1 M in H2O)

bp

177 °C (lit.), 62-63 °C/12 mmHg (lit.)

mp

−1 °C (lit.)

solubility

H2O: miscible 1 M at 20 °C

density

0.968 g/mL at 20 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤20 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: 1.00, λ: 280 nm Amax: 0.09

SMILES string

CN(C)C(=O)N(C)C

InChI

1S/C5H12N2O/c1-6(2)5(8)7(3)4/h1-4H3

InChI key

AVQQQNCBBIEMEU-UHFFFAOYSA-N

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Other Notes

Liquid denaturing agent for proteins. Used for the dissociation of hemoglobin; TMU delipidates and quantitatively liberates the apoproteins of human serum high-density lipoprotein in soluble form

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Repr. 1B - Skin Irrit. 2

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 3

flash_point_f

167.0 °F - closed cup

flash_point_c

75 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

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Dissociation of human hemoglobin by the ureas and amides. Osmotic pressure and light scattering studies.
D Elbaum et al.
Biochemistry, 13(6), 1268-1278 (1974-03-12)
A rapid electrophoretic technique for identification of subunit species of apoproteins in serum lipoproteins.
J P Kane
Analytical biochemistry, 53(2), 350-364 (1973-06-01)
F A Sylvester et al.
Infection and immunity, 64(4), 1420-1425 (1996-04-01)
Piliated Burkholderia (formerly Pseudomonas) cepacia from sputa of cys tic fibrosis patients in Toronto, Canada, were shown earlier to bind to purified mucins and to a protein receptor on epithelial cells via a 22-kDa adhesin located on unique cable pili.
Y L A Rezus et al.
Physical review letters, 99(14), 148301-148301 (2007-10-13)
We have used femtosecond midinfrared spectroscopy to study the orientational mobility of water molecules in the hydration shells of hydrophobic groups. Our results show that hydrophobic groups are surrounded by a number of water molecules that display much slower orientational
Klaas-Jan Tielrooij et al.
Journal of the American Chemical Society, 132(44), 15671-15678 (2010-10-19)
We study the influence of the amphipilic compound tetramethylurea (TMU) on the dynamical properties of water, using dielectric relaxation spectroscopy in the regime between 0.2 GHz and 2 THz. This technique is capable of resolving different water species, their relative

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