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Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP compliant, guideline study, available as an unpublished report, reliable without restriction.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2010

Materials and methods

Test guidelineopen allclose all
Qualifier:
equivalent or similar to guideline
Guideline:
other: Regulation (EC) No. 1272/2008
Deviations:
yes
Remarks:
Modified method based on this guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: Mathid N.4 of the UN Transport of Dengerous Goods, Manual of Tests and Criteria, fourth revised edition, 2003.
Deviations:
yes
Remarks:
Due to limited volume of test item available a modified method was used.
Principles of method if other than guideline:
An aliquot of the test item was heated in an oven. The temperature in the centre of test item, and in the oven, was constantly monitored with thermocouples for signs of self heating.
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Reference substance name:
Matte leaching residue
IUPAC Name:
Matte leaching residue
Constituent 2
Reference substance name:
Residues, copper-iron-lead-nickel matte, sulfuric acid-insol.
EC Number:
310-050-8
EC Name:
Residues, copper-iron-lead-nickel matte, sulfuric acid-insol.
Cas Number:
102110-49-6
IUPAC Name:
Residues, copper-iron-lead-nickel matte, sulfuric acid-insol.
Details on test material:
- Name of test material: Refinable No 5.1: Matte leaching residue
- Physical state: Dark grey solid
- Storage condition of test material: Room temperature in the dark

Results and discussion

Relative self-ignition temperature (solids)
Relative self-ignition temperature:
265 °C
Remarks on result:
other: There were no signs of self heating when the test item was held at 140°C for 24 hours. Standard pressure assumed.
Remarks:
at atm. press. of 101.3 kPa

Any other information on results incl. tables

There were no signs of self heating when the test item was held at 140°C for 24 hours. When the test item was heated between 140 and 400°C self heating occurred at 265°C.

Applicant's summary and conclusion

Conclusions:
There were no signs of self heating when the test item was held at 140°C for 24 hours. When the test item was heated between 140 and 400°C self heating occurred at 265°C.
Executive summary:

In a GLP-compliant, guideline test Matte leaching residue was heated up to 400°C. There were no signs of self heating when the test item was held at 140°C for 24 hours. When the test item was heated between 140 and 400°C self heating occurred at 265°C.

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