Strontium oxalate

Vapour pressure

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

vapour pressure

Type of information:

calculation (if not (Q)SAR)

Remarks:

Migrated phrase: estimated by calculation

Adequacy of study:

supporting study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

results derived from a valid (Q)SAR model and falling into its applicability domain, with adequate and reliable documentation / justification

Qualifier:

according to guideline

Guideline:

other: EPI Suite v1.68

Principles of method if other than guideline:

Vapour pressure estimations. Software: MPBPVP (Modified Grain Method)

GLP compliance:

no

Type of method:

other: QSAR model modified grain calculation

Specific details on test material used for the study:

The substance is a mono-constituent substance; the prediction is done on the constituent.

Temp.:

25 °C

Vapour pressure:

0 Pa

Considering that a comparative approach between strontium oxalate and oxalic acid can be a reasonnable assumption for the majority of organic salt compounds (e.g. metal salts of some organic acids).

The presence of a common organic part allows to give the tendancy of the behavior of the organic salt regarding volatility property.

Indeed, the non volatility of the oxalic acid (Vp=0.0056 mm Hg) also estimated by QSAR model MPBPVP v1.43 (Syracuse Research Corp.) corroborate the absence of volatility of the strontium oxalate salt.

Conclusions:

The vapour pressure of the test item was estimated to be 0.000474 Pa at 25 °C with (Q)SAR model Epi Suite Software tool.
The substance is considered as not volatile.

Reference 2

Endpoint:

vapour pressure

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the melting point is above 300°C

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
According to r7a guidance (p50), the substance decomposes from 420-590°C (loss of CO and CO2), the testing is technically not possible.

Description of key information

The substance decomposes from 420-590°C (loss of CO and CO2), the testing is technically not possible.

However, the vapour pressure of the test item was estimated to be 0.000474 Pa at 25 °C with (Q)SAR model Epi Suite Software tool.

The substance is considered as not volatile.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C

Additional information

Considering that a comparative approach between strontium oxalate and oxalic acid can be a reasonnable assumption for the majority of organic salt compounds (e.g. metal salts of some organic acids).

The presence of a common organic part allows to give the tendancy of the behavior of the organic salt regarding volatility property.

Indeed, the non volatility of the oxalic acid (Vp=0.0056 mm Hg) also estimated by QSAR model MPBPVP v1.43 (Syracuse Research Corp.) corroborate the absence of volatility of the strontium oxalate salt.