Alum ( aluminium sulphate) Has a variety of uses one of which is as a wash for alginate moulds prior to pouring the plaster. This reduces the powdery surface that can happen when plaster is cast in a water based mould due to surface tension. Sometimes used in the production of fake white marble. Other uses:- As a soil additive to reduce the P.H. of soil which can effect achange in the colour of hydrangeas. As an active ingredient in antiperspirants. As an accelerator for concrete, Or a flocculent in water purification.
Cas No. 10043-01-3
Price is per kilo
Product Code: ALUM
