Registration Dossier
Registration Dossier
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EC number: 231-786-5 | CAS number: 7727-54-0
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 2009-09-29 to 2009-10-01
- Reliability:
- 1 (reliable without restriction)
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Version / remarks:
- 92/69/EEC
- Deviations:
- no
- Principles of method if other than guideline:
- NA
- GLP compliance:
- not specified
- Type of method:
- capillary method
- Key result
- Atm. press.:
- 100.66 kPa
- Decomposition:
- yes
- Decomp. temp.:
- ca. 120 °C
- Sublimation:
- no
- Conclusions:
- The test substance diammonium persulfate was determined to decompose at ca. 393 K (= 120 °C) at 100.66 kPa before the melting point was reached. Thus, no value for melting temperature was determined.
- Executive summary:
Applying the capillary method according to EU method A.1: Melting Temperature of Commission Directive 92/96/EEC, diammonium persulfate was determined to decompose at ca. 393 K (= 120 °C) at 100.66 kPa before the melting point was reached. Three separate tests were carried out:
Measured Decomposition Temperatures (° C)
I. II. III. Mean Sample 1. 120.0 119.0 121.0 120.0 Sample 2. 119.0
120.0 120.0 119.7 Sample 3. 121.0
120.0 119.0 120.0
Reference
Measured Decomposition Temperatures (° C) |
||||
| I. | II. | III. | Mean | |
| Sample 1. | 120.0 | 119.0 | 121.0 | 120.0 |
| Sample 2. | 119.0 |
120.0 | 120.0 | 119.7 |
| Sample 3. | 121.0 |
120.0 | 119.0 | 120.0 |
Description of key information
The test substance diammonium persulfate was determined to decompose at ca. 393 K (= 120 °C) at 100.66 kPa before the melting point was reached. Thus, no value for melting temperature was determined.
Key value for chemical safety assessment
Additional information
Following EU method A.1 (capillary method), the substances of the Persulfate Category were determined to decompose at approximately 120 °C (393 K), 100 °C (373K) and 180 °C (453 K) at atmospheric pressures of about 1000 hPa before the melting point was reached. Thus, for all three substances, no value for melting temperature was determined.
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