Barium Sulfate → Sulfuric Acid

Participants

Reaction Steps

Among the plate barium sulfates of the present invention, if a plate barium sulfate produced by adding a plate barium sulfate having a particle size of from 3 to 70 μm, preferably from 10 to 30 μm, as a seed into the reaction solution in an amount of from 5 to 90 wt % (% by weight), preferably from 30 to 70 wt %, based on the total weight of the produced plate barium sulfate before the above-described reaction of a barium hydroxide solution and a sulfuric acid solution, the plate barium sulfate obtained has a particle size of from 5 to 150 μm, preferably from 20 to 100 μm. If the particle size is less than 5 μm, the slipperiness is conspicuously impaired; whereas if it exceeds 150 μm, the touch is rough. In either case, cosmetics cannot be put into practical use, thus the particle size is limited to fall in the above-described range.

Provenance & Evidence