Sodium glyoxylate

Vapour pressure

Administrative data

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 13 September 2017. Experimental completion date: 02 October 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Deviations:

yes

Remarks:

During study plan preparation the test item was identified by Safelink SPM-01only. Subsequently a batch number (G150201) and appearance (colorless to slightly yellow powder) were provided. This didn't affect the integrity or validity of the study.

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Deviations:

yes

Remarks:

During study plan preparation the test item was identified by Safelink SPM-01only. Subsequently a batch number (G150201) and appearance (colorless to slightly yellow powder) were provided. Thisdidn't affect the integrity or validity of the study.

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: vapour pressure balance

Test material

Test material information

Constituent 1

Reference substance name:

Sodium glyoxylate

EC Number:

220-298-8

EC Name:

Sodium glyoxylate

Cas Number:

2706-75-4

Molecular formula:

C2H2O3.Na

IUPAC Name:

sodium oxoacetate

Specific details on test material used for the study:

Identification: Safelink SPM-01
Appearance/Physical state: Colorless to slightly yellow powder
Batch: G150201
Purity: 99.9%
Expiry date: Not supplied
Storage conditions: Room temperature in the dark

Results and discussion

Vapour pressure

Key result

Temp.:

25 °C

Vapour pressure:

0 Pa

Any other information on results incl. tables

Summary of Results

The values of vapor pressure at 25 °C extrapolated from each run are summarized in the following table:

Run	Log10[Vp(25 ºC)]
6	-6.95
7	-6.68
8	-6.61
9	-6.23
10	-6.32
Mean	-6.56
Vapor Pressure	2.75 x 10^-7Pa

The test item did not change in appearance under the conditions used in the determination.

Discussion

A total of 10 runs were completed for the main sequence. Equilibrium with regard to vapor pressure was assessed to have been reached over the final 5 runs. Thus the final 5 runs have been used to calculate the definitive vapor pressure value for the test item.

The results may represent rounded values obtained by calculations based on the exact raw data.

Applicant's summary and conclusion

Conclusions:

The vapor pressure of the test item has been determined to be 2.8 x 10-7 Pa at 25 ºC.

Executive summary:

The vapor pressure of Safelink SPM-01 has been determined to be 2.8 x 10^-7Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.