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EC number: 200-018-0 | CAS number: 50-21-5
Lactic acid in in an aquatic solution containing 88.6 % lactic acid has a density of 1.2 g/ml at 25°C.
The density of an 80% aqueous solution of lactic acid was determined at 25°C with 1.19 g/m3.
The density of a concentrated solution of lactic acid (between 80 and 86%) is ca. 1.2 g/m3; the density of a 93%
solution will be slightly higher.
Density of a concentrated solution of lactic acid depends on the concentration and temperature, but also on the degree of (spontaneous, reversible) polymerisation of lactic acid. The equilibrium is thus that the maximum density is ca 1.2 g/m3.
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