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Physical & Chemical properties

Density

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Endpoint:
density
Remarks:
other: Density of an 88.6% aqueous solution
Type of information:
other: Handbook data
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
Compilation of literature data, methods not described.
GLP compliance:
no
Type of method:
other: Review of literature in handbook
Type:
other: Density of an 88.6% aqueous solution
Density:
1.2 g/cm³
Temp.:
25 °C
Conclusions:
Lactic acid in in an aquatic solution containing 88.6 % lactic acid has a density of 1.2 g/ml at 25°C.
Executive summary:

Lactic acid in in an aquatic solution containing 88.6 % lactic acid has a density of 1.2 g/ml at 25°C.

Endpoint:
density
Remarks:
other: Density of an 80% aqueous solution
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Principles of method if other than guideline:
Density was measured using a Density meter DMA 48 A.Paar.
GLP compliance:
no
Type of method:
other: Density meter DMA 48 A.Paar
Type:
other: Density of an 80% aqueous solution
Density:
1.19 g/cm³
Temp.:
25 °C
Conclusions:
The density of an 80% aqueous solution of lactic acid is 1.19 g/m3.
Executive summary:

The density of an 80% aqueous solution of lactic acid was determined at 25°C with 1.19 g/m3.

Description of key information

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.

Key value for chemical safety assessment

Additional information

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.