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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Physical & Chemical properties


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Description of key information

Tartaric acid and its salts have density values higher than 1.6 g/mL.

The determination of this property was done according to a weight of evidence approach based on available literature reference and QSAR calculation.

Key value for chemical safety assessment

Additional information

A collection of the density values was performed for tartaric acid and its salts (i.e. monosodium, monopotassium, sodium potassium, sodium, potassium and calcium tartrate). All found values are listed below.

EC name

Density (g/mL)

(+)-tartaric acid


(-)-tartaric acid 


(±)-tartaric acid


 mesotartaric acid


 potassium hydrogen tartrate


 potassium sodium tartrate


 calcium tartrate


 sodium hydrogen tartrate


 disodium tartrate

1.78 - 1.82

 dipotassium tartrate


The density values are available for tartaric acid and almost all its salts. Overall, all these values are very similar and, on the whole, are higher than 1.6 g/mL.