... or 99% /solid 99% /flake 96% or 99% (SODIUM HYDROXIDE/SOUDE CAUSTIQUE)Molecular Formula: NaOH CAS No.: 1310-73 ... synthetic fiber, inter-mediate of dyestuff, regeneration of rubber, bleaching of textiles, paper -making, soap-making, refinery of petroleum and grease, aluminum ... soap, saponification). 5. Food uses of sodium hydroxide include washing or chemical peeling of fruits and vegetables 6. Used in ...