... to 66%. Utilizing the natural raw brucite, we developed magnesium hydroxide superfine powder and flame retardant series. After surface modification, the ... surface treatment methods according to customers' request.Activity of magnesium hydroxide flame retardants widely used in rubber, chemicals, building materials, ... %3.50%3.20%0.40%0.30%90.00%D90.00%4.20%3.90%0.50%0.33%90.00% magnesium hydroxide