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Boiling point

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Description of key information

- 258 degrees Celsius

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
258 °C

Additional information

In a key study, the boiling point of the test item Phosphonic acid (Phosphorous acid Flake)was determined based on the procedures indicated by the following internationally accepted methods:

- OECD Guideline 103

- EU Method A.2

- EPA OPPTS 830.7220

A clear boiling point, as defined in the guideline with a current stream of bubbles evolving from the capillary, was observed at a heating temperature of 258 °C (531 K).