Product Name: Iron Oxide Red Model: GR-190 Relative Tinting Strength:100±5% Iron Content in Fe2O3: 96% 105? Volatiles :1.0% Water Solubility:0.3% Residue on Sieve(63 um mesh) :0.3% Water Suspension PH Value :4.0-7.0 Oil Absorption: 15-25(g/100g) Color ?E:1.0 Usage: paint, ink, water coating, color asphalt, color brick, color tile, antique building, papermaking, pottery, rubber and plastic industry.