Registration Dossier
Registration Dossier
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EC number: 200-816-9 | CAS number: 74-86-2
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
The melting point of acetylene, measured as the triple point, is - 80.7°C
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -80.7 °C
Additional information
In accordance with column 2 of REACH Annex VII, the melting/freezing point study does not need to be conducted below a lower limit of -20°C. The CRC Handbook (Lide 2008) is peer reviewed and is considered reliable and suitable for use for this endpoint. The second study (Merck Handbook (O'Neil 2006)) is also a peer reviewed handbook and reports a value of -81°C (192.5 K) and supports the value reported in the CRC Handbook. The melting point is reported as the triple point temperature.
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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