... boxes,etc Ultramarine Blue is an innocuous and environment protective inorganic pigment. It has good effect on removing yellow color contained in ... heat, light, weather and alkali resistance, it is an ideal pigment of paint, ink, rubber, paper making, printing, plastic, stationery, ... with standardColor Strength in %(compared with standard sample)100±5 Free Sulfur in %(m/m) ≤0.050.050.10.100.150 ...