Product Name: Iron Oxide Red Model: GR-130 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 Usages: paint, ink, water coating, color asphalt, color brick, color tile, antique building, papermaking, pottery, rubber and plastic industry.