Review the following chart to determine the flammability statement that should be included on the proposed label. The flash point is the lowest temperature at which a combustible liquid will give off a flammable vapor which will ignite the liquid. The flame extension test is required for aerosol products. The flame extension test is conducted by holding the aerosol can 6 inches from a flame and discharging the product across the flame. Any flame extension in excess of 18 inches or any flashback of flame to the valve at any degree of valve opening would then dictate the proper labeling of the product as either being flammable of extremely flammable.
Flashback occurs when the flame is drawn back toward the aerosol can by the stream of propellant.
This would indicate a highly flammable product. All other pressurized containers Extremely flammable. Contents under pressure. Keep away from fire, sparks, and heated surfaces. Do not puncture or incinerate container.