ANSULITE 1×3 F-601A AR-AFFF is formulated from special fluorochemical and hydrocarbon surfactants, a high molecular weight polymer, and solvents. It is transported and stored as a concentrate to provide ease of use and considerable savings in weight and volume. It contains no PFOS or PFOA. It is intended for use as a 1% proportioned solution on hydrocarbon fuels and as a 3% proportioned solution on polar solvent fuels in fresh, salt, or hard water. Water hardness should not exceed 500 ppm expressed as calcium and magnesium. It may also be used and stored as a pre-mixed solution in only fresh, potable water.
There are three fire extinguishing mechanisms in effect when using ANSULITE 1×3 F-601A foam solution on either a conventional Class B hydrocarbon fuel such as gasoline, diesel fuel, etc.; or a Class B polar solvent (water miscible fuel) such as methyl alcohol, acetone, etc.
1. An aqueous film is formed in the case of a conventional hydrocarbon fuel, or a polymeric membrane in the case of a polar solvent fuel. This film or membrane forms a barrier to help prevent the release of fuel vapor.
2. Regardless of the fuel type, a foam blanket is formed which excludes oxygen. The liquids that form the film or the polymeric membrane are drained from the foam blanket.
3. The water content of the foam produces a cooling effect.