Registration Dossier

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
02 Dec 2019 - 11 Dec 2019
Reliability:
1 (reliable without restriction)
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)
GLP compliance:
yes
Specific details on test material used for the study:
Name Sulphide Precipitate
Batch no. 20190601
Appearance blackish-green, wet sticky solid
Composition 2.9 % Cu; 18.0 % Zn; 0.5 % Fe; 0.1 % Pb; 0.7 % Cd; 0.4 % As; 0.3 % Sb; 0.1 % Sn; 0.0 % Bi; 0.0 % Br; 2.7 % Cl; 1.1 % F
CAS No. unknown
EC-No. 951-963-7
Molecular formula not stated
Molecular weight not stated
Purity 100 % (UVCB)
Homogeneity homogeneous
Vapour pressure not stated
Stability in solvents H2O: not stated; EtOH: not stated; acetone: not stated; CH3CN: not stated; DMSO: not stated
Solubility in solvents H2O: not stated; EtOH: not stated; acetone: not stated; CH3CN: not stated; DMSO: not stated
Production date not stated
Expiry date 31. Dec. 2025
Storage room temperature (20 ± 5 °C)
Stability stable under storage conditions
Key result
Test procedure:
burning rate test: preliminary screening test
Remarks on result:
substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Safety Pre-Test

The Flame became orange, otherwise no reaction was observed.

Preliminary Screening Test

In the preliminary screening test following the EU and the UN method, the test item was heated with the flame of a teclu burner. The Flame became orange and the test item became greyish. No ignition occurred within two minutes

Interpretation of results:
not classified based on GHS criteria
Conclusions:
No ignition was observed throughout the course of the test.
Executive summary:

This study was performed in order to determine the flammability of Sulphide Precipitate. The test item was formed into an unbroken strip or powder train about 250 mm long. A preliminary screening test was performed to determine if, on ignition by a gas flame, propagation by burning with flame or smouldering occurs. If propagation over 200 mm of the train occurs within a specified time, then a full test programme to determine the burning rate should be carried out.

In the preliminary screening test following the EU and the UN method, the test item was heated with the flame of a teclu burner. The Flame became orange and the test item became greyish. No ignition occurred within two minutes.

The test item Sulphide Precipitate should be considered as not highly flammable (for EU regulations) and as non-flammable solid (for UN regulations).

No observations were made which might cause doubts concerning the validity of the study outcome.

Description of key information

No ignition was observed throughout the course of the test.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

This study was performed in order to determine the flammability of Sulphide Precipitate. The test item was formed into an unbroken strip or powder train about 250 mm long. A preliminary screening test was performed to determine if, on ignition by a gas flame, propagation by burning with flame or smouldering occurs. If propagation over 200 mm of the train occurs within a specified time, then a full test programme to determine the burning rate should be carried out.

In the preliminary screening test following the EU and the UN method, the test item was heated with the flame of a teclu burner. The Flame became orange and the test item became greyish. No ignition occurred within two minutes.

The test item Sulphide Precipitate should be considered as not highly flammable (for EU regulations) and as non-flammable solid (for UN regulations).

No observations were made which might cause doubts concerning the validity of the study outcome.

Justification for classification or non-classification

The result of the key study (Krebs, F. 2020) does not indicate Sulphide Precipitate to be classified for flammability according to CLP Regulation 1272/2008.