Registration Dossier
Registration Dossier
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EC number: 262-810-2 | CAS number: 61477-95-0
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:
- 24.09.2018 - 25.09.2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- GLP compliance:
- no
- Type of method:
- capillary method
- Specific details on test material used for the study:
- Name: Monalazone Disodium
Lot No. Purity Manufactured date Expiry Date
72617S >99% excluding water 7/26/2017 2/1/2019 - Key result
- Atm. press.:
- 1 atm
- Decomposition:
- yes
- Remarks:
- the test item was observed to decompose at 242ºC and turned in to a dark brown mass.
- Decomp. temp.:
- 242 °C
- Conclusions:
- The test item, Monalazone disodium was observed to change its colour from white to light brown at 192ºC. The test item was observed to decompose at 242ºC and turns in to a dark brown mass. Hence, it is concluded that the test item decomposes before melting.
- Executive summary:
The determination of melting point of the test item, Monalazone disodium was carried out in accordance with OECD 102 and OPPTS 830.7200.
The melting point of the test item was determined using Buchi Melting pointM-565system. The instrument was calibrated using melting point standards 4-nitrotoluene and potassium nitrate.
The determined mean melting point of standard 4-nitrotoluene was 52.7°C (325.85 K) as against the declared melting point of 52.3°C. The determined mean melting point of standard potassium nitrate was336.1°C (609.25 K) as against the declared melting point of334.7°C.
The test item, Monalazone disodium was observed to change its colour from white to light brown at 192ºC. The test item was observed to have decomposed at 242ºC and turns in to a dark brown mass. Hence, it is concluded that the test item decomposes before melting.
Reference
The test item, Monalazone disodium was observed to change its colour from white to light brown at 192ºC.
Description of key information
The test item decomposes before melting.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 248.5 °C
Additional information
The test item, Monalazone disodium was observed to change its colour from white to light brown at 192ºC. The test item was observed to decompose at 242ºC and turns in to a dark brown mass. Hence, it is concluded that the test item decomposes before melting.
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