Registration Dossier
Registration Dossier
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EC number: 231-512-4 | CAS number: 7601-90-3
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure of Perchloric acid (65.4% purity in water) is 71 Pa at 20°C.
Key value for chemical safety assessment
- Vapour pressure:
- 0.71 hPa
- at the temperature of:
- 20 °C
Additional information
One reliable key study is available (Processium, 2007) and is selected as key study. It has been performed on perchloric acid at 65.4% in water in accordance with the OECD Testing Guideline 104. A static method, specially developed for very low pressures was used. Vapour pressures were measured at 4 temperatures in the temperature range [323 – 293] K. Data were checked with the ANTOINE law.
The vapour pressure determined at 293.15 K (20°C) was 0.5 mmHg ( 71 Pa ).
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