Registration Dossier
Registration Dossier
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EC number: 951-962-1 | CAS number: -
Flammability
Administrative data
Link to relevant study record(s)
- 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 Lead Sulphate
Batch no. 20170505
Appearance grey granules of different sizes
Composition 1.2 % Cu; 4.2 % Zn; 0.8 % Fe; 59.5 % Pb; 0.1 % Cd; 1.7 % As; 0.2 % Sb; 4.0 % Sn; 0.5 % Bi; 0.1 % Br; 0.7 % Cl; 0.3 % F
CAS No. unknown
EC-No. 951-962-1
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
- 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 Lead sulphate. 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 test item crackled and the granulates shattered. The flame was green and also glowing was observed during heating. No ignition occurred within two minutes.
The test item lead sulphate 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.
Reference
Safety Pre-Test
No reaction was observed, just the flame became green.
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 test item crackled and the granulates shattered. The flame was green and also glowing was observed during heating. No ignition occurred within two minutes.
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 Lead sulphate. 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 test item crackled and the granulates shattered. The flame was green and also glowing was observed during heating. No ignition occurred within two minutes.
The test item lead sulphate 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 Lead sulphate to be classified for flammability according to CLP Regulation 1272/2008.
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