I was trying to figure out what is in class A firefighting foam last week.
Nobody really wants to say, it is all trade secrets, evading a direct response, using vague sweeping terms, like it contains surfactant and foaming agents.
However based on the published MSDS. my guess, soap, it is mainly soap.
Note that I do think it is soap finely engineered for it's fire suppression characteristics. I also think you would get 80% there with a bottle of dish soap.
Ya some of us rural volunteer firefighters will use dish soap instead of foam concentrate. I personally haven't but some of the others in the department have.
Nobody really wants to say, it is all trade secrets, evading a direct response, using vague sweeping terms, like it contains surfactant and foaming agents.
However based on the published MSDS. my guess, soap, it is mainly soap.
https://www.fs.usda.gov/rm/fire/wfcs/products/msds/foam/silv...
Note that I do think it is soap finely engineered for it's fire suppression characteristics. I also think you would get 80% there with a bottle of dish soap.