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EC number: 201-766-0
CAS number: 87-69-4
Tartaric acid and its salts are solid at 1013 hPa.
The determination of this property was done according to a weight of
evidence approach based on available literature references.
The melting point for tartaric acid and its salts ranges, according to
literature and experimental data, between 70 and 230 °C.
A collection of the melting point values was performed for tartaric acid
and its salts. All found values are listed below.
Range of melting point (°C)
Interpretation of data
168 - 171
168 - 172
170 - 206
140 - 147
potassium hydrogen tartrate
potassium sodium tartrate
70 - 100
decomposes at 165.2 +/- 0.3 C°
sodium hydrogen tartrate
Based on melting point values, tartaric acid and its salts are solid at
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