... %, 2.Whiteness: 94%min 3.PH: 6-9 Great for car brakes, white powder and heavy density, fine average particle size ... , but have special process to increase prodct purity, suitable for car brakes, some plastic and painting. The standard specifications are as ... . As a weighting agent for drilling fluids in oil and gas exploration.2. Used in the car, electronics, TV screen, rubber, and glass ...