Registration Dossier
Registration Dossier
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EC number: 222-179-6 | CAS number: 3378-72-1
Flash point
Administrative data
Link to relevant study record(s)
- Endpoint:
- flash point of flammable liquids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Justification for type of information:
- Company specification data which is considered reliable, tested using a guideline procedure not according to GLP.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- ASTM D93 (Standard test methods for flash point by pensky-martens closed cup tester)
- GLP compliance:
- no
- Type of method:
- closed cup
- Flash point apparatus:
- Pensky-Martens apparatus
- Dynamic viscosity of test material:
- considered non-viscous
- Specific details on test material used for the study:
- Crude material; purity > 95.73%
- Key result
- Flash point:
- > 48 - < 55 °C
- Atm. press.:
- 101.3 kPa
- Remarks on result:
- other: assume standard atmospheric pressure
- Interpretation of results:
- Category 3 (flammable liquids) based on GHS criteria
- Remarks:
- The flash point is above 23 °C and less than 60 °C.
- Conclusions:
- The flash point of the substance was experimentally found to be betwee 48.0 and 55.0 °C. The substance is classified as a Category 3 Flammable Liquid.
- Endpoint:
- flash point of flammable liquids
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with national standard methods with acceptable restrictions
- Justification for type of information:
- Company specification data which is considered reliable, tested using a guideline procedure not according to GLP.
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- ASTM D93 (Standard test methods for flash point by pensky-martens closed cup tester)
- GLP compliance:
- no
- Type of method:
- closed cup
- Flash point apparatus:
- Pensky-Martens apparatus
- Dynamic viscosity of test material:
- considered non-viscous
- Specific details on test material used for the study:
- Distilled NBTB, purity > 99.3%
- Key result
- Flash point:
- > 86 °C
- Atm. press.:
- 101.3 kPa
- Remarks on result:
- other: assume standard atmospheric pressure
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The flash point of the distilled substance was experimentally found to be 86.0 °C. The distilled substance is not classified as a flammable liquid.
Referenceopen allclose all
The flash point was experimentally determined to be > 48.0 and < 55.0 °C, with some variability between samples. Conservatively, the point estimate was set at < 50 °C.
The flash point of the distilled material was experimentally determined to be 86.0 °C.
Description of key information
Distilled: 86.0 °C; crude: 48.0 -55.0 °C. Crude spiked with excess tert-butylamine showed a flash point of 32 -38 °C.
Key value for chemical safety assessment
- Flash point at 101 325 Pa:
- 32 °C
Additional information
The flash point of the crude NBTB was > 48 and < 55.0 °C. Crude NBTB spiked with 1.4% tert-butylamine showed a flash point of 32 -35 °C, with a value of 38 °C when reanalysed weeks later. The low value of 32 °C is chosen for the risk assessment. As this value for the crude NBTB is between the values of 23 °C and 60 °C, the substance is classified as Category 3, Flammable Liquid.
The flash point of the distilled NBTB is 86 °C and, as the flashpoint is is above 60 °C, it is not classified as a flammable liquid.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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