Calfax® 10L-45 is a C10 (Linear) Sodium Diphenyl Oxide Disulfonate is a highly soluble surfactant and solubilizer for acid or alkaline cleaners. It is biodegradable and halogenated solvent-free. It can be used as a primary or secondary surfactant. It is highly soluble in cleaners where conventional surfactants lack solubility. It is an excellent emulsifier and is compatible with a broad range of high electrolyte cleaners. CFR 21 and 40 approved.