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Description of key information

Density: 1.1 g/cm³ at 20 °C (75 % aqueous solution of Choline chloride)
Density: 1.10 g/cm³ at 20 °C, 1.11 g/cm³ at 0 °C, 1.12 g/cm³ at -20 °C (70 % aqueous solution of Choline chloride)

Key value for chemical safety assessment

Relative density at 20C:

Additional information

The density of both a 75 % and 70 % Choline chloride solution was determined to be 1.10 g/cm³ at 20 °C (OECD SIDS, 2004). So the results, although both derived from a secondary source, are consistent and hence indicate a certain reliability. But it should be kept in mind that the density of the pure substance may differ. This is especially for risk assessment less important because the substance is distributed as a 75 % aqueous solution which is the most prevalent form humans could possibly get in contact with. However, due to the reliability of both data sources (Klimisch 4), the available data is not considered as fully sufficient to meet the tonnage-driven data requirements under REACH, and an additional study will be conducted and submitted via spontaneous dossier update.

So, the results will be used for the assessment of choline chloride until the data from the new, planned experimental study will be available.