Skip to Content
Merck

1.08488

Millipore

Urea

for biochemistry

Synonym(s):

Carbamide, Carbonyl diamide, Diaminomethanone, Carbonyldiamine, Carbamide, Carbonyldiamide

Sign Into View Organizational & Contract Pricing


About This Item

Linear Formula:
NH2CONH2
CAS Number:
Molecular Weight:
60.06
Beilstein:
635724
MDL number:
UNSPSC Code:
12352111
EC Index Number:
200-315-5
NACRES:
NA.21

Pricing and availability is not currently available.

vapor pressure

<0.1 hPa ( 20 °C)

Quality Level

form

solid

potency

8471 mg/kg LD50, oral (Rat)
8200 mg/kg LD50, skin (Rat)

technique(s)

titration: suitable

pH

9 (20 °C, 100 g/L in H2O)

mp

132-135 °C (lit.)

solubility

1000 g/L

density

1.335 g/mL at 25 °C (lit.)

bulk density

720‑760 kg/m3

Looking for similar products? Visit Product Comparison Guide

Application

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.

Analysis Note

Purity (DSC (differential scanning calorimetry)): ≥ 99.5 %
Identity (IR-spectrum): passes test
Appearance: Colorless crystals or white crystalline powder.
Appearance of solution (100 g/l, water): Clear and colorless.
Melting point (DSC (differential scanning calorimetry)): 132 - 135 °C
UV-Absorption (260 nm; 8 mol/l; 1 cm; water): ≤ 0.1
UV-Absorption (280 nm; 8 mol/l; 1 cm; water): ≤ 0.1
Cyanide (CN): ≤ 0.000001 %
Chloride (Cl): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.0004 %
Fe (Iron): ≤ 0.00002 %
NH₄ (Ammonium): ≤ 0.00001 %
Biuret: ≤ 0.05 %
Sulfated ash (800 °C): ≤ 0.01 %

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service