Ko te konutea pūkawa ngāwha heptahydrate he pūhui pararopi me te tātai rāpoi o ZnSO4 7H2O, e mōhiotia whānuitia ana ko te konumohe me te konutea konumohe.He karaehe orthorhombic prismatic crystal zinc sulphate crystals Zinc Sulphate Granular, te paura tioata ma, he memeha ki te wai, he memeha noa ki te waiwaro.Ka ngaro te wai ina whakamahana ki te 200°C ka pirau ki te 770°C.