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Physical & Chemical properties

Flammability

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Endpoint:
substances / mixtures which in contact with water emit flammable gases
Type of information:
other: expert statement
Adequacy of study:
key study
Study period:
August 17, 2011 - January 5, 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Based on the molecular structure of the components of the substance an expert statement rather than a full study is considered sufficient to cover this endpoint.
Qualifier:
according to
Guideline:
other: United Nations (UN), UN no. ST/SG/AC.10/11/Rev.5: Recommendations on the Transport of Dangerous Goods, Appendix 6: “Screening Procedures”, 2009
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.12 (Flammability (Contact with Water))
Deviations:
no
Qualifier:
according to
Guideline:
other: UN no. ST/SG/AC.10/11/Rev.5: Recommendations on the Transport of Dangerous Goods, Part III: Classification Procedures, Test Methods and Criteria Relating to Class 2, Class 3, Class 4, Division 5.1, Class 8 and Class 9, Test N.5, 2009
Deviations:
no
GLP compliance:
yes (incl. certificate)

- The chemical structure of the components of the substance does not contain groups (metals or metalloids) that might lead to ignition in contact with water and/or to the evaluation of a flammable gas;

- Experience in production and handling shows that the substance does not react with water, for instance, during the determination of the surface tension;

- The substance is known to be soluble in water to form a stable mixture

Interpretation of results:
other: the substance is considered "not highly flammable" in contact with water
Conclusions:
The molecular structure of the components of the substance was evaluated for the presence or absence of groups (metals or metalloids) that might lead to ignition in contact with water and/or to the evaluation of a flammable gas. As the molecular structure of the components of the substance does not contain such groups, the substance is considered "not highly flammable" in contact with water.
Endpoint:
flammability
Type of information:
other: expert statement
Adequacy of study:
key study
Study period:
August 17, 2011 - January 5, 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Based on experience during handling under normal laboratory conditions, an expert statement rather than a full study is considered sufficient to cover this endpoint (according UN Guideline).
Qualifier:
according to
Guideline:
other: United Nations (UN), UN no. ST/SG/AC.10/11/Rev.5: Recommendations on the Transport of Dangerous Goods, Appendix 6: “Screening Procedures”, 2009
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.13 (Pyrophoric Properties of Solids and Liquids)
Deviations:
no
Qualifier:
according to
Guideline:
other: UN no. ST/SG/AC.10/11/Rev.5: Recommendations on the Transport of Dangerous Goods, Part III: Classification Procedures, Test Methods and Criteria Relating to Class 2, Class 3, Class 4, Division 5.1, Class 8 and Class 9, Test N.3, 2009
Deviations:
no
GLP compliance:
yes (incl. certificate)

The substance was handled under normal laboratory conditions during the determination of its physical-chemical properties. It demonstrated that the test substance does not ignite in contact with air.

Interpretation of results:
other: non pyrophoric
Conclusions:
Based on experience during handling under normal laboratory conditions, it was concluded that the substance has no pyrophoric properties.
Endpoint:
flammable solids
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Reason / purpose:
read-across source

- The flame of the gas burner did ignite the test substance pile. The test substance melted, burned with a yellow flame and turned into a light brown to black residue. Grey smoke was observed. After removal of the ignition source, the flame extinguished after 2 seconds and no propagation of combustion was observed.

- As no propagation of combustion of the test substance along 200 mm length of the pile within 4 minutes was observed, performance of the burning rate test is not required in accordance with the guidelines.

Interpretation of results:
other: not highly flammable
Conclusions:
A preliminary screening test was performed for the determination of the flammability of REWOTERIC AM 2 L freeze-dried (amphoacetates C12-C14) in accordance with United Nations (UN) Test N.1 (2009), EU Method A.10 (2008) and according to GLP principles. As no propagation of combustion of the test substance along 200 mm length of the pile within 4 minutes was observed, the substance is considered not highly flammable. This result is read across to the registered substance.

Description of key information

Based on a study conducted with a substance analogue (C12-C14 alkyl derivatives), expert judgement based on the molecular structure of the components of the substance and experience during handling of the substance under normal laboratory conditions, the substance is considered to be non flammable. With the Pensky-Martens closed cup method was determined that aqueous solutions of the substance have no flash-point.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

The preliminary screening test was performed for the determination of the flammability of a substance analogue (C12-C14 alkyl derivatives) in accordance with United Nations (UN) Test N.1 (2009), EU Method A.10 (2008) and according to GLP principles. A freeze dried aqueous solution was used in this study. As no propagation of combustion of the test substance along 200 mm length of the pile within 4 minutes was observed, the substance is considered not highly flammable. The rationale to read across the data is attached in Section 13.

The molecular structure of the components of the substance was evaluated for the presence or absence of groups (metals or metalloids) that might lead to ignition in contact with water and/or to the evaluation of a flammable gas. As the molecular structure of the components of the substance does not contain such groups, the substance is considered "not highly flammable" in contact with water.

Based on experience during handling under normal laboratory conditions, it was concluded that the substance has no pyrophoric properties.

The Pensky-Martens closed cup method was applied for the determination of the flash-point of an aqueous solution of the substance, according to UN, EC, ISO and ASTM guidelines and according to GLP principles. No flash-point was observed up to boiling of the test substance.

Justification for classification or non-classification

Based on the results obtained in the preliminary screening test performed with a substance analogue (C12-C14 alkyl derivatives) in accordance with EU Method A.10 (2008), expert judgement based on the molecular structure of the components of the substance and experience during handling of the substance under normal laboratory conditions, the substance does not need to be classified for flammability in accordance with the CLP Regulation. As it was determined that aqueous solutions of the substance have no flash-point, also aqueous solutions of the substance do not need to be classified for flammability in accordance with the CLP Regulation.