Reaction mass of calcium carbonate and calcium dihydroxide and calcium peroxide

Stability: thermal, sunlight, metals

Administrative data

Endpoint:

stability: thermal, sunlight, metals, other

Remarks:

Migrated from section 'Stability: thermal, sunlight, metals'

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Well documented GLP study according to OECD and other internationally accepted guidelines. No deviations.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2012

Report date:

2012

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: UN no. ST/SG/AC.10/11/Rev. 5 Test method for self-heating substances, 2009

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

reaction mass of calcium carbonate and calcium dihydroxide and calcium peroxide

EC Number:

908-343-6

Molecular formula:

The substance is a reaction mass of a number of constituents and so the molecular formula of the substance to be registered is not available

IUPAC Name:

reaction mass of calcium carbonate and calcium dihydroxide and calcium peroxide

Details on test material:

- Physical state: light yellow powder
- Composition of test material, percentage of components:
- 77.8% CaO2
- 6.7% CaCO3
- 15.5% Ca(OH)2
- 0.1% H2O
- Lot/batch No.: 20100601
- Expiry date: 16 february 2012
- Stability under storage conditions: stable
- Storage condition of test material: at room temperature in the dark

Results and discussion

For thermal stability study

Test substance thermally stable:

ambiguous

Operating temperature

Operating temp.:

140 °C

Transformation products:

yes

Any other information on results incl. tables

After the experiment, major part of the test substance was unchanged but a small part of the test substance had turned into a light brown residue. It indicated that this part had decomposed and/or reacted during the experiment but this decomposition/reaction had not caused an exothermic effect. Based on this, it was concluded that the test substance is “not a self-heating substance”. According to the guideline, no further testing was required.

Applicant's summary and conclusion

Conclusions:

After the experiment, major part of the test substance was unchanged but a small part of the test substance had turned into a light brown residue. It indicated that this part had decomposed and/or reacted during the experiment but this decomposition/reaction had not caused an exothermic effect. Based on these findings it was concluded that the test substance is “not a self-heating substance”.

Executive summary:

The ability of the test substance to undergo oxidative self-heating was determined by Test 1 of the Modified Bowes-Cameron Cage test. The experiment was carried out according to an internationally accepted guideline and under GLP.

The test substance was exposed to air at temperatures of 140°C using a temperature controlled laboratory oven, cubic stainless steel wire sample containers of 100 mm wide, NiCr/Ni thermocouples and a temperature recording device.

After the experiment, major part of the test substance was unchanged but a small part of the test substance had turned into a light brown residue. It indicated that this part had decomposed and/or reacted during the experiment but this decomposition/reaction had not caused an exothermic effect. Based on these findings it was concluded that the test substance is “not a self-heating substance”.