The magnesium powder is mainly used as a desulphurisation agent for steel production in industry. The flame retardant time at 1000 °C is not less than 15 seconds, the magnesium content should not be less than 92%. For supply enquiry, please contact our factory, we are looking forward to your contact. Guaranteed delivery capacity is 400 tons per month to you. There is a discount for bulk purchase. 1 kilogram / (minimum order quantity) Melting point: 651℃, Property: Powder, spherical Silver white powder.