Potassium (S)-lactate

Density

Link to relevant study record(s)

Reference

Reference 1

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 Potassium lactate with different concentrations in water have been determined. Crystalline Potassium lactate is hygroscopic and extremely difficult to isolate, thus only manufactured and marketed as a concentrated aqueous solution.
The concentrations of the Potassium lactate solutions are 1 %, 2 %, 5 %, 10 %, 20 %, 30 %, 40 %, 50 %, 60 %, 70 % and 78 %.

Type:

relative density

Density:

1.331 other: dimensionless

Temp.:

25 °C

Remarks on result:

other: 60 % (w/w) solution of potassium lactate in water.

Type:

relative density

Density:

1.393 other: dimensionless

Temp.:

25 °C

Remarks on result:

other: 70 % (w/w) solution of potassium lactate in water.

Type:

relative density

Density:

1.443 other: dimensionless

Temp.:

25 °C

Remarks on result:

other: 78 % (w/w) solution of potassium lactate in water.

Conclusions:

The densities of aqueous solutions of Potassium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 78 % (w/w) Potassium lactate in water have the following relative densities:
60 % (w/w): 1.3307;
70 % (w/w): 1.3928;
78 % (w/w): 1.4426.

Executive summary:

In this experimental study, which is comparable to OECD 109 (pycnometer method), the densities of aqueous solutions of Potassium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 78 % (w/w) Potassium lactate in water have the following relative densities:

60 % (w/w): 1.3307;

70 % (w/w): 1.3928;

78 % (w/w): 1.4426.

Reference 2

Endpoint:

relative density

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Justification for type of information:

For details and justification of read-across please refer to the read-across report attached to IUCLID section 13.

Reason / purpose for cross-reference:

read-across source

Type:

relative density

Density:

1.331 other: dimensionless

Temp.:

25 °C

Remarks on result:

other: 60 % (w/w) solution of potassium lactate in water.

Type:

relative density

Density:

1.393 other: dimensionless

Temp.:

25 °C

Remarks on result:

other: 70 % (w/w) solution of potassium lactate in water.

Type:

relative density

Density:

1.443 other: dimensionless

Temp.:

25 °C

Remarks on result:

other: 78 % (w/w) solution of potassium lactate in water.

Conclusions:

The densities of aqueous solutions of Potassium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 78 % (w/w) Potassium lactate in water have the following relative densities:
60 % (w/w): 1.3307;
70 % (w/w): 1.3928;
78 % (w/w): 1.4426.

Executive summary:

In this experimental study, which is comparable to OECD 109 (pycnometer method), the densities of aqueous solutions of Potassium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 78 % (w/w) Potassium lactate in water have the following relative densities:

60 % (w/w): 1.3307;

70 % (w/w): 1.3928;

78 % (w/w): 1.4426.

This information is used in a read-across approach in the assessment of the target substance. For justification of read-across please refer to the read-across report atached to IUCLID section 13.

Description of key information

In an experimental study, which is comparable to OECD 109 (pycnometer method), the densities of aqueous solutions of Potassium lactate were determined by the pycnometer method at 25 °C. The highly concentrated solutions with 60 %, 70 % and 78 % (w/w) Potassium lactate in water have the following relative densities:

60 % (w/w): 1.3307;

70 % (w/w): 1.3928;

78 % (w/w): 1.4426.

Key value for chemical safety assessment

Relative density at 20C:

1.4

Additional information

This information is used in a read-across approach in the assessment of the target substance. For justification of read-across please refer to the read-across report attached to IUCLID section 13.