6035-47-8 79-25-4 Formaldehyde sodium sulfoxylate dihydrate Methanesulfinic acid, hydroxy-, monosodium salt, dihydrate Monosodium hydroxymethanesulfinate dihydrate Sodium Formaldehyde Sulfoxylate Sodium Formaldehyde Sulfoxylate [USAN] Sodium formaldehydesulfoxylate dihydrate