Poly[oxy(methyl-1,2-ethanediyl)], .alpha.-[2-[bis(phosphonomethyl)amino]methylethyl]-.omega.-[2-[bis(phosphonomethyl)amino]methylethoxy]-, sodium salt (1:?)

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is a solid having a melting point <= 160°C

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING

The present substance is a low melting solid (see IUCLID section 4.2), therefore it fulfills the exemption criteria.
Moreover, ECHA recommends self-heating (UN N4, IUC 4.13), instead of relative self-ignition of solids (EU A16, IUC 4.12), because the UN N4 test is the standard used for CLP classification purpose. However, the same waiver applies to self-heating.

References:
1. REACH Regulation (EC) 1907/2006, Annex VII, column 2
2. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.1.10.7, v6.0, July 2017).

Reason / purpose for cross-reference:

data waiving: supporting information

Reference 2

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

9 June 2011 and 18 July 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Relative self-ignition temperature:

> 400 °C

Remarks on result:

other: The test item has been determined not to have a relative self-ignition temperature below 400°C.

Results

Please see the illustration (picture/graph) section for the temperature/time curve.

Observations after the test.

The cube contained a lightweight, grey charred solid that had expanded in volume and was over-hanging the cube.

Conclusions:

The test item has been determined not to have a relative self-ignition temperature below 400°C.

Executive summary:

The test item was heated in an oven and the relative self ignition temperature determined. Testing was conducted using a procedure designed to be compatible with Method A16 Relative Self-Ignition Temperature for Solids of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Result: Please see the illustration (picture/graph) section for the temperature/time curve.

Observations after the test.

The cube contained a lightweight, grey charred solid that had expanded in volume and was over-hanging the cube.

Conclusion

The test item has been determined not to have a relative self-ignition temperature below 400°C.

Description of key information

The test item has been determined not to have a relative self-ignition temperature below 400°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

400 °C

Additional information

Due to substance properties (i.e. low melting solid), testing was not required. But an experimental study was available, and is presented as supporting information.

The test item was heated in an oven and the relative self ignition temperature determined. Testing was conducted using a procedure designed to be compatible with Method A16 Relative Self-Ignition Temperature for Solids of Commission Regulation (EC) No 440/2008 of 30 May 2008.