Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Principles of method if other than guideline:
One key aspect in developing a new refrigerant is to test its compatibility with typical metals that are used in refrigeration and air conditioning equipment. Tests are typically performed by adding a given amount of the test substance into a high pressure glass vessel that contains copper, steel and aluminum coupons. The glass vessel is then sealed and thermostated at a given temperature. When the test is completed the initial analysis is determined by simply looking at the color of the fluid in the tube. It is therefore important that the initial color of the refrigerant is documented so that it can be compared to the final samples
GLP compliance:
Physical state at 20°C and 1013 hPa:
Key result
liquified gas
Substance type:

Description of key information

HFO-1234yf is a colorless liquified gas

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
gas under pressure: liquefied gas

Additional information