Registration Dossier
Registration Dossier
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EC number: 200-018-0 | CAS number: 50-21-5
Density
Administrative data
Link to relevant study record(s)
- Endpoint:
- density, other
- Remarks:
- Density of an 88.6 % aqueous solution
- Type of information:
- other: handbook data
- Adequacy of study:
- key study
- Study period:
- 1971
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Qualifier:
- no guideline followed
- Guideline:
- other: handbook 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
- Key result
- Type:
- other: Density of an 88.6% aqueous solution
- Density:
- 1.2 g/cm³
- Temp.:
- 25 °C
- Conclusions:
- The density of an 88.6% aqueous solution of lactic acid is 1.2 g/cm³.
- Executive summary:
According to Holten, the density of an 88.6% aqueous solution of lactic acid is 1.2 g/cm³.
- Endpoint:
- density, other
- Remarks:
- Density of an 80 % aqueous solution
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 1996
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Principles of method if other than guideline:
- Density was measured using a Density meter DMA 48 A.Paar.
- GLP compliance:
- no
- Type of method:
- oscillating densitimeter
- Specific details on test material used for the study:
- 80% solution of lactic acid.
- 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/cm³.
- Executive summary:
The density of an 80% aqueous solution of lactic acid is 1.19 g/cm³.
Referenceopen allclose all
Description of key information
The density of a concentrated solution of lactic acid (between 80 and 86 %) is ca. 1.2 g/cm3; the density of a 93 % solution will be slightly higher.
Key value for chemical safety assessment
- Relative density at 20C:
- 1.2
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/cm3.
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