3,3',3''-[1,3,5-triazine-2,4,6-triyltris(thio)]trispropane-1-sulphonic acid, sodium salt

3,3',3''-[1,3,5-Triazine-2,4,6-triyltris(thio)]tris[1-propanesulfonic acid]/sodium,(1:x) salt