The water - soluble Monascus yellow pigment was prepared from the Monascus red pigment and sodium dithionite in base solution.
红曲红色素与连二亚硫酸钠在碱性溶液中反应，制得水溶性红色素。
2
Generally, the ionizable salt of the drug is more water soluble than the free acid or free base.
通常，药物的电离的盐比自由酸或自由基地溶于水。
3
The interfering effects of surfactants on the effectiveness of water soluble rust inhibitors in water base metal working fluids and water base metal cleaners were investigated.