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EC number: 203-674-6 | CAS number: 109-46-6
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:
- 2009-2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (OECD 102). Not GLP.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 102 (Melting point / Melting Range)
- Deviations:
- no
- GLP compliance:
- no
- Other quality assurance:
- ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
- Type of method:
- thermal analysis
- Remarks:
- Differential Scanning calorimetry
- Key result
- Melting / freezing pt.:
- 65.7 °C
- Remarks on result:
- other: batch 15022309994
- Key result
- Melting / freezing pt.:
- 66.2
- Remarks on result:
- other: batch 16092303386
- Key result
- Melting / freezing pt.:
- 66.4 °C
- Remarks on result:
- other: batch 16092303420
- Key result
- Melting / freezing pt.:
- 66.1 °C
- Remarks on result:
- other: batch 16092303453
- Key result
- Melting / freezing pt.:
- 66.3 °C
- Remarks on result:
- other: batch 170122304341
- Key result
- Melting / freezing pt.:
- 65.9 °C
- Remarks on result:
- other: batch 170122304342
- Key result
- Melting / freezing pt.:
- 65.39 °C
- Remarks on result:
- other: statistical value from 1/1/2008 till 1/04/2018 on 77 samples
- Key result
- Melting / freezing pt.:
- >= 63 - <= 67 °C
- Remarks on result:
- other: sales specification
- Conclusions:
- The melting point of DBTU (1,3-dibutyl-2-thiourea) is determined to be about 63-67 °C
- Executive summary:
A study was performed according to OECD Test guiede 10 in order to investigate the melting point of the test substance DBTU (1,3 -dibutyl-2 -thiourea). The melting point of DBTU is determined to be about 65.3°C on average (statiscals values), specifications are 63 -67°C.
Reference
Description of key information
- According to 5 publications in ACS, melting point of 1,3-dibutyl-2-thiourea is in the range: 61-71°C.
- According to 10 references in REAXSYS, melting point of DBTU is in the range 62-65.5°C
- According to the database Chemis-Grundbestand - BGVV/CHEMIS (available on website http://en.gsbl.de/gsblweb30/changeView.do?viewname=ALLE_MERKMAL), DBTU is a crystalline product white to yellow/brown having a melting point of about 63°C
- According to 3 reference on REASYS, melting point of DBTU is in the range 61-86°C
- According to 10 publication in REGISTERY, melting point of DBTU is about 61-71°C.
Key informations gathers from different sources are summarized below:
A study was performed according to OECD Test guide 10 in order to investigate the melting point of the test substance DBTU (1,3 -dibutyl-2 -thiourea). The melting point of DBTU is determined to be about 65.3°C on average (statistically values), specifications are 63 -67°C.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- 65 °C
Additional information
Melting point of DBTU (1,3-dibutyl-2-thiourea) is about 65°C (range 63 -67°C)
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