Registration Dossier
Registration Dossier
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EC number: 265-025-3 | CAS number: 64704-23-0
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Administrative data
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 09 February 2018 - 20 March 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.16 (Relative Self-Ignition Temperature for Solids)
- GLP compliance:
- no
Test material
- Reference substance name:
- Disodium L-cystinate
- EC Number:
- 265-025-3
- EC Name:
- Disodium L-cystinate
- Cas Number:
- 64704-23-0
- Molecular formula:
- C6H10N2Na2O4S2.H2O
- IUPAC Name:
- disodium (2R)-2-amino-3-{[(2R)-2-amino-2-carboxyethyl]disulfanyl}propanoate
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
Relative self-ignition temperature (solids)
- Key result
- Relative self-ignition temperature:
- ca. 198 °C
Any other information on results incl. tables
Interpretation: The self-ignition temperature of the test item is the minimum ambient temperature expressed in °C at which a certain volume of a substance ignites under defined conditions.
Results: The plots of the oven temperature and sample temperature versus time are shown in Figure 3, see attached. A strong exothermic effect of the test item was observed. The temperature of the test item reached 400°C at an oven temperature of 198°C. It demonstrated that the self-ignition temperature of the test item is 198°C. After the experiment, the test item had turned into a black charred residue. It indicated that the test item had been decomposed and/or reacted during the experiment.
Applicant's summary and conclusion
- Conclusions:
- Conclusion: The self-ignition temperature of Disodium L-cystinate was determined using a temperature programmed laboratory oven, a stainless steel wire mesh cube, NiCr/NiAl thermocouples and a temperature recording device. The self-ignition temperature of the test item is 198°C.
- Executive summary:
Conclusion: The self-ignition temperature of Disodium L-cystinate was determined using a temperature programmed laboratory oven, a stainless steel wire mesh cube, NiCr/NiAl thermocouples and a temperature recording device. The self-ignition temperature of the test item is 198°C.
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