Registration Dossier
Registration Dossier
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EC number: 231-639-5 | CAS number: 7664-93-9
Boiling point
Administrative data
Link to relevant study record(s)
- Endpoint:
- boiling point
- Type of information:
- other: Review
- Adequacy of study:
- weight of evidence
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Summary of public domain information
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 103 (Boiling point/boiling range)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Boiling pt.:
- 290 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: 100% sulphuric acid
- Boiling pt.:
- 310 - 335 °C
- Atm. press.:
- 1 013 hPa
- Remarks on result:
- other: 98% sulphuric acid
- Conclusions:
- The boiling point (at 1013 hPa) is 290°C for 100% sulphuric acid and 310 to 335°C for 98% sulphuric acid.
- Executive summary:
The boiling point (at 1013 hPa) is 290°C for 100% sulphuric acid and 310 to 335°C for 98% sulphuric acid.
Reference
The boiling point (at 1013 hPa) is 290°C for 100% sulphuric acid and 310 to 335°C for 98% sulphuric acid.
Description of key information
The general trend seen in the three publications is that the boiling point increases as the acid strength increases to a maximum at around 97 -98%. As the acid strength continues to rise to 100%, the boiling point value slowly falls.
Key value for chemical safety assessment
- Boiling point at 101 325 Pa:
- 290 °C
Additional information
The general trend seen in the three publications is that the boiling point increases as the acid strength increases to a maximum at around 97 -98%. As the acid strength continues to rise to 100%, the boiling point value slowly falls.
Largely differing values for the boiling point are presented for a 98% solution of sulfuric acid. However, the graph presented in the handbook titled 'The manufacture of Sulfuric Acid' supports the OECD value of 310 -335 °C.
Percent sulphuric acid H2SO4 |
UK PSD Boiling point (°C) |
OECD Boiling point (°C) |
100 |
- |
290 |
98 |
190 |
310-335 |
96 |
330 |
- |
77 |
365 |
- |
70 |
163 |
- |
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