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EC number: 222-720-6
CAS number: 3586-55-8
The test substance, an UVCB, is a
clear, colourless liquid which is readily soluble in water.
Physico-chemical properties are actually not applicable as the test
substance is a reaction product containing of several constituents. The
measured values depend on the values of the single constituents.
In aqueous solutions, it undergoes
rapid hydrolysis. In technical products an equilibrium is reached which
depends on the concentration. In contrast, in the environment total
hydrolysis to formaldehyde hydrate and ethylene glycol is expected.
Data on formaldehyde
Formaldehyde is a colourless gas which
is well soluble in water and has a low volatilization potential from
water. This can be explained by the formation of methylene glycol
(HOCH2OH) in aqueous solution and by hydrogen bonds which reduce the
tendency to volatilize. Furthermore, formaldehyde has a low logPow and
no surface tension properties. No data on the pH dependence of log Pow
and water solubility is available. As formaldehyde exists in aqueous
solution as methylene glycol or its oligomers and the pKa of the hydrate
is 13.27, an influence of the pH value is not expected. However, the
polymerization of formaldehyde in aqueous solution has a significant
impact on specific values. This should be kept in mind in the
application of physical-chemical properties during modelling.
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.
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