NIST2141

Urea

NIST^® SRM^® 2141

• Synonym(s): Carbamide, Carbonyldiamide
• Linear Formula: NH₂CONH₂
• CAS Number: 57-13-6
• Molecular Weight: 60.06
• Beilstein: 635724
• MDL number: MFCD00008022
• UNSPSC Code: 41116107
• PubChem Substance ID: 329818729
• NACRES: NA.24

Properties

• grade: certified reference material
• Quality Level: 100
• form: crystals
• packaging: pkg of 2 g
• manufacturer/tradename: NIST^®
• mp: 132-135 °C (lit.)
• density: 1.335 g/mL at 25 °C (lit.)
• application(s): clinical testing
• SMILES string: NC(N)=O
• InChI: 1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
• InChI key: XSQUKJJJFZCRTK-UHFFFAOYSA-N

Description

General description

SRM 2141_cert

SRM 2141_SDS

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.

Other Notes

Example analytes are listed below as a reference. Please download a current certificate at nist.gov/SRM for current analytes and certified values.
Nitrogen (N)

See certificate for values and more details at nist.gov/SRM.

Legal Information

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable