TAPPI T 661 : OM 93
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PROPERTIES OF SYNTHETIC SILICATE PIGMENTS
23-07-2013
12-01-2013
Deals with testing of synthetic silicate pigments for moisture, pH, viscosity, 325-mesh residue, and brightness. The term synthetic silicate pigments refers to a group of white pigments including the following: Products formed by the reaction of siliceous materials with a compound capable of forming an insoluble metal silicate. These silicates can be amorphous or crystal-line, depending upon the method of their preparation. Complex silicates of the type formed by the reaction of an alkali or alkaline earth compound and an aluminum compound with a siliceous material. Those materials whose principal constituent is hydrated silica formed by the separation of silica from one of its reactive compounds.
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