NIST2141

Urea

NIST^® SRM^® 2141

• Sinónimos: Carbamida, Carbonildiamida
• Fórmula lineal: NH₂CONH₂
• Número de CAS: 57-13-6
• Peso molecular: 60.06
• Beilstein/REAXYS Number: 635724
• MDL number: MFCD00008022
• UNSPSC Code: 41116107
• PubChem Substance ID: 329818729
• NACRES: NA.24

Propiedades

• 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

Descripción

General description

SRM 2141_cert

SRM 2141_SDS

Application

Urea Standard reference material (SRM) is certified for calibrating and standardizing microchemical procedures aimed at determining nitrogen in organic matter. Additionally, it serves as a tool for standardizing techniques for nitrogen determination, when carbon and hydrogen are simultaneously analyzed.

Utilizada para la desnaturalización de proteínas y como suave agente de solubilización para las proteínas insolubles o desnaturalizadas. Útil para la renaturalización de proteínas de muestras ya desnaturalizadas con cloruro de guanidina 6 M como los cuerpos de inclusión. Puede utilizarse con clorhidrato de guanidina y ditiotreitol (DTT) en el repliegue de las proteínas desnaturalizadas a su forma nativa o activa.

Features and Benefits

Available with a certificate documentingnitrogen value determined through a modification of the AOAC micro-Kjeldahlmethod.

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

Información de seguridad

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable