Urea 

Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form.

ACS reagent

99.0-100.5%

≤0.01% Insoluble matter

≤0.01%

132-135 °C(lit.)

1.335 g/mL at 25 °C(lit.)

chloride (Cl^-): ≤5 ppm

sulfate (SO₄^2-): ≤0.001%

Fe: ≤0.001%

heavy metals (as Pb): ≤0.001%

rat ... Ppm1a(24666)

human ... CA1(759), CA2(760)

Merck 13,9935

Beil. 3,IV,94

Fieser 1,1262 / Fieser 2,455

Corp MSDS 1 (2), 3578:A / FT-IR 2 (1), 1356:D / FT-IR 1 (1), 799:C / IR-Spectra (3), 474:B / IR-Spectra (2), 420:F / NMR-Reference 2 (1), 670:B / RegBook 1 (1), 939:B / Sax 6, 2713 / Structure Index 1, 146:A:1

1

YR6250000