Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 200-315-5
CAS number: 57-13-6
Urea is a non-flammable, crystalline solid with a melting
point between 133.3 -134 °C. The substance is reported to decompose
before reaching the boiling point (CRC Handbook, 2006). The density and
vapour pressure of urea was measured to be 1.33 g/cm³ (Gwerder et
al, 2009) and 1.2 x 10-5mmHg at 25 °C (Jones, 1960),
respectively. Urea is very water soluble and has a partition coefficient (log
Pow) of < -1.73. The dissociation constant of urea (pKb) is reported
to be 0.1 at 21°C (Perrin, 1965) and is measured to be lower than
0.6 in a modern proprietary study (Gwerderet al, 2009). Urea
is not predicted to have any explosive or oxidising properties based on
a theoretical assessment of its chemical structure.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again