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Boiling point

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Description of key information

The boiling point has been determined by two different methods:
- using the distillation method at atmospheric pressure, Method A2 of Commission Directive 92/69/EEC (which constitutes Annex V of Council Directive 67/548/EEC) and
- using the Distillation of Petroleum Products at Atmospheric Pressure method, ASTM D 86 - 04b.
The overall boiling temperature range is to be quoted using the results obtained following Method ASTM D 86:
314 to 379°C (587 to 652 K) at 100.6 to 101.2 kPa

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
314 °C

Additional information

Method A2 of Commission Directive 92/69/EEC

Overall boiling temperature range 471 to >635 ± 0.5 K (198 to >361 ± 0.5°C).

Approximately 82 to 84% boiled over the temperature range 471 to >635 ± 0.5 K (198 to >361 ± 0.5°C). The remainder was considered to have a boiling temperature greater than 635 K (>361°C).

Discussion:

The standard Annex V method for the determination of boiling temperature using the distillation method at atmospheric pressure (ISO 918) is not appropriate for test materials of this nature.These test materials are classed as petroleum products with broad boiling temperature ranges.

The determination of boiling temperatures for petroleum products uses a specific method (IP 123 Petroleum Products - Determination of Distillation Characteristics) which is referenced in ASTM D 86, Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure.

Method ASTM D 86

The boiling temperature range of the test material was determined to be 314 to 379°C (587 to 652 K) at 100.6 to 101.2 kPa.