Disodium β-glycerophosphate

Stability: thermal, sunlight, metals

Administrative data

Endpoint:

thermal stability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

27 July 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)

Version / remarks:

1981

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Disodium β-glycerophosphate

EC Number:

212-464-3

EC Name:

Disodium β-glycerophosphate

Cas Number:

819-83-0

Molecular formula:

C3H7O6P.2Na

IUPAC Name:

disodium β-glycerophosphate

impurity 1

Reference substance name:

Disodium α-glycerophosphate

EC Number:

216-304-3

EC Name:

Disodium α-glycerophosphate

Cas Number:

1555-56-2

Molecular formula:

C3H9O6P.2Na

IUPAC Name:

disodium 2,3-dihydroxypropyl phosphate

impurity 2

Reference substance name:

Water

EC Number:

231-791-2

EC Name:

Water

Cas Number:

7732-18-5

Molecular formula:

H2O

IUPAC Name:

Oxidane

Test material form:

solid: particulate/powder

Details on test material:

Batch No.: 11769400
Storage: 15-25°C

Results and discussion

For thermal stability study

Test substance thermally stable:

yes

Operating temperature

Operating temperature 1

Key result

Operating temp.:

50 °C

Remarks on result:

other: exothermic effect

Operating temperature 2

Key result

Operating temp.:

80 °C

Remarks on result:

other: endothermic effect

Operating temperature 3

Key result

Operating temp.:

210 °C

Remarks on result:

other: endothermic effect

Operating temperature 4

Key result

Operating temp.:

230 °C

Remarks on result:

other: exothermic effect

Operating temperature 5

Key result

Operating temp.:

370 °C

Remarks on result:

other: exothermic effect

Sublimation:

not determined

Transformation products:

not specified

Any other information on results incl. tables

Starting at a temperature of 50 °C a first exothermic effect with an energy release of -20 J/g can be observed. This effect is directly followed by an endothermic effect, starting at 80 °C. A second endothermic effect is detected starting at a temperature of 210 °C. This effect leads into a second exothermic effect starting at 230 °C with an energy release of -20 J/g. Subsequently a third exothermic effect starting at 370 °C with an energy release of -20 J/g is observed.

Applicant's summary and conclusion

Conclusions:

The test item Disodium beta-glycerophosphat (CAS no. 819-83-0) showed three exothermic effects at temperatures of 50, 230 and 370 °C with an overall decomposition energy of -60 J/g.

Executive summary:

The test item Disodium beta-glycerophosphat (CAS no. 819-83-0) showed three exothermic effects at temperatures of 50, 230 and 370 °C with an overall decomposition energy of -60 J/g.