... 66-2 EINECS NO.241-004-4 Product Name: Sodium borohydride Molecular Formula: BH4NaCAS NO. 16940-66-2Appearance ... The principle application of sodium borohydride is the production of sodium dithionite from sulfur dioxide: Sodium dithionite is used ... It is reductant of carbonyl compound (aldehyde, ketone, acid, acid amide, acid anhydride, acid halogen, ester, enol ester, imide, lactone), carbonitriding ...