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Diss Factsheets

Physical & Chemical properties

Density

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November, 1941
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 109 (Density of Liquids and Solids)
Deviations:
not specified
GLP compliance:
no
Type of method:
pycnometer method
Specific details on test material used for the study:
In this experimental study only the densities of solutions of Sodium lactate with different concentrations in water have been determined. Crystalline Sodium lactate is hygroscopic and extremely difficult to isolate, thus it is only manufactured and marketed as a concentrated aqueous solution. The concentrations of the Sodium lactate solutions are 1 %, 2 %, 5 %, 10 %, 20 %, 30 %, 40 %, 50 %, 60 %, 70 % and 77.15 %.
Type:
relative density
Density:
1.313 other: dimensionless
Temp.:
25 °C
Remarks on result:
other: 60 % (w/w) solution of Sodium lactate in water.
Type:
relative density
Density:
1.372 other: dimensionless
Temp.:
25 °C
Remarks on result:
other: 70 % (w/w) solution of Sodium lactate in water.
Key result
Type:
relative density
Density:
1.409 other: dimensionless
Temp.:
25 °C
Remarks on result:
other: 77.15 % (w/w) solution of Sodium lactate in water.
Conclusions:
The densities of aqueous solutions of Sodium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 77.15 % (w/w) Sodium lactate in water have the following relative densities:
60 % (w/w): 1.3131;
70 % (w/w): 1.3717;
77.15 % (w/w): 1.4085.
Executive summary:

The densities of aqueous solutions of sodium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 77.15 % (w/w) Sodium lactate in water have the following relative densities:
60 % (w/w): 1.3131;
70 % (w/w): 1.3717;
77.15 % (w/w): 1.4085.

Description of key information

In an experimental study, which is comparable to OECD 109 (pycnometer method), the densities of aqueous solutions of Sodium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 77.15 % (w/w) Sodium lactate in water have the following relative densities:

60 % (w/w): 1.3131;

70 % (w/w): 1.3717;

77.15 % (w/w): 1.4085.

Key value for chemical safety assessment

Relative density at 20C:
1.41

Additional information