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Physical & Chemical properties

Appearance / physical state / colour

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Link to relevant study record(s)

Reference
Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
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:
no
Physical state at 20°C and 1013 hPa:
gaseous
Key result
Form:
liquified gas
Colour:
colorless
Substance type:
organic

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:
gaseous
Form:
gas under pressure: liquefied gas
Colour:
colourless

Additional information