Plaster Fast-Set is a white, powdered, non-chloride set accelerator. It is ideal as a replacement for accelerators containing calcium chloride, which weakens plaster, causes corrosion and interferes with color. Plaster Fast-Set safely speeds up the set time and also greatly enhances plaster spreadability. It contains no nitrates and is therefore not hazardous to workers and requires no environmental reporting. One 5-lb bag of Plaster Fast-Set will reduce set times by up to three hours.