Which foam concentrate is based on hydrocarbon surface active agents and listed as a wetting agent, foaming agent, or both?

Which foam concentrate is based on hydrocarbon surface active agents and listed as a wetting agent, foaming agent, or both?

• A. Aqueous film-forming foam concentrate
• B. Protein foam concentrate
• C. Other synthetic foam concentrate
• D. Film-forming fluoroprotein foam concentrate

Answer: (C)

Foam concentrates are categorized by their base chemistry. Hydrocarbon surface-active agents refer to nonfluorinated synthetic surfactants. The concentrates that use these hydrocarbon-based surfactants fall into the “other synthetic foam concentrates” category. They are listed for use as wetting agents, foaming agents, or both, depending on the product and its listing. AFFF and film-forming fluoroprotein concentrates rely on fluorinated surfactants to achieve low surface tension and film formation, so they are not hydrocarbon-based. Protein concentrates are not hydrocarbon-based either. Therefore, the option describing other synthetic foam concentrates best fits being based on hydrocarbon surface-active agents and listed as a wetting agent, foaming agent, or both.

Foam concentrates are categorized by their base chemistry. Hydrocarbon surface-active agents refer to nonfluorinated synthetic surfactants. The concentrates that use these hydrocarbon-based surfactants fall into the “other synthetic foam concentrates” category. They are listed for use as wetting agents, foaming agents, or both, depending on the product and its listing.

AFFF and film-forming fluoroprotein concentrates rely on fluorinated surfactants to achieve low surface tension and film formation, so they are not hydrocarbon-based. Protein concentrates are not hydrocarbon-based either. Therefore, the option describing other synthetic foam concentrates best fits being based on hydrocarbon surface-active agents and listed as a wetting agent, foaming agent, or both.