Alum does not agree with the thio dyestuffs which are manufactured by Dahl & Co., Barmin, and are fast against soap and light.
thio- or thi-
Containing sulfur, used especially of a compound in which oxygen has been replaced by a divalent sulfur: thioacid.
|thio- or thi- |
A prefix that means "containing sulfur," used especially of a compound in which an oxygen atom has been replaced by a sulfur atom, as in thiourea.