Registration Dossier
Registration Dossier
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EC number: 267-400-7 | CAS number: 67859-51-2
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of the 54% aqueous solution of EDTA-Zn(NH4)2 is expected to be comparable or slightly lower than water.
Key value for chemical safety assessment
Additional information
The commercial product Dissolvine E-ZN-9 (54% EDTA-Zn(NH4)2 aqueous solution) has no ammonia smell (ammonia odour threshold is 0.45 mg/m3).
Read across: The vapour pressure of Ethylenediaminetetraacetic acid, copper diammonium complex, 55% aqueous solution at 20°C is 2.03 ± 0.05 kPa, which is slightly lower than that of pure water (vapour pressure of water is 2.23 kPa at 20°C)
For the solid substance EDTA-Zn(NH4)2 the endpoint can be waived: as the substance is very low volatile and thus has a negligable vapour pressure.
Based on its multiple carboxylic acid salt functionality the pure substance will exhibit negligible vapor pressure. Because of its high polarity the substance always contains a few % of water so the vapour pressure exhibited by this substance is expected to be that of the adherent water.
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.
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