Drop melting point of petrolatum wax is the temperature at which the material becomes sufficiently fluid to drop from the thermometer used making the determination under definite prescribed conditions. This test method covers the determination of the drop melting point of petroleum wax. It is used primarily for petrolatum and other microcrystalline wax. | Drop melting point of petrolatum wax is the temperature at which the material becomes sufficiently fluid to drop from the thermometer used making the determination under definite prescribed conditions. This test method covers the determination of the drop melting point of petroleum wax. It is used primarily for petrolatum and other microcrystalline wax. |