Sodium starch glycolate (DST) is the sodium salt of a 
carboxymethyl ether of starch, is an excipient as super 
disintergrant in pharm. tablet, granules and food processing.

It owns a property of rapid absorption of water into the 
tablet, plus an enormous swelling of its particles (about 25 
times of original volume) to help reducing the disintegration 
time of tablet considerably, and increases the absorption rate 
of ingredients. It is effective both in tablets prepared 
either by direct compression or by wet granulation.