Soapstone, Talc, Talcum, Talk, Talc Dusting Powder, Dusting Powder: Physical Description – Fine white powder, odourless, free from grittiness, readily adhered to skin, unctuous to the touch – Light, homogeneous, white powder, greasy to the touch (non-abrasive) Chemical Composition: Hydrated Magnesium Silicate [H 2 Mg 3 (SiO 3) 4 or …