Abstract: Provided is powdered gyrolite-type calcium silicate that has a relatively large particle size, yet is endowed with both a high oil absorption and a high particle strength. The powdered gyrolite-type calcium silicate has (1) an oil absorption of at least 2.8 mL/g, (2) an average particle diameter of at least 40 ?m, and (3) in treatment where the gyrolite-type calcium silicate is charged into a laser diffraction-type particle size analyzer within the range of a diffraction volume of from 0.1 to 0.6 and circulated at a flow rate of 32.5 mL/s for 5 minutes, a percent change in average particle diameter following treatment with respect to average particle diameter before treatment of 15% or less.

Abstract: Provided is a powder composition containing an oily substance, the powder composition having good oxidation stability and excellent compression moldability. The powder composition containing an oily substance contains a powdery calcium silicate-based material, and an oily substance impregnated into the material. In the material, a cumulative pore volume for a pore size of 10 to 70 nm is 1.1 cc/g or more, and a cumulative pore volume for a pore size of 70 to 500 nm is 2.0 cc/g or less.

Abstract: Provided is a powdered tobermorite-type calcium silicate-based material capable of demonstrating high oil absorption. The powdered tobermorite-type calcium silicate-based material is characterized in that (1) a molar ratio of SiO2/CaO in the material is 1.5 or more, and (2) a cumulative pore volume having a pore size of 3.6 nm to 200 nm in the material is 0.9 cc/g or more, and a cumulative pore volume having a pore size of 3.6 nm to 5000 nm is 2.6 cc/g or more.

Abstract: Provided is a powder composition containing an oily substance, the powder composition having good oxidation stability and excellent compression moldability. The powder composition containing an oily substance contains a powdery calcium silicate-based material, and an oily substance impregnated into the material. In the material, a cumulative pore volume for a pore size of 10 to 70 nm is 1.1 cc/g or more, and a cumulative pore volume for a pore size of 70 to 500 nm is 2.0 cc/g or less.

Abstract: Provided is a powdered tobermorite-type calcium silicate-based material capable of demonstrating high oil absorption. The powdered tobermorite-type calcium silicate-based material is characterized in that (1) a molar ratio of SiO2/CaO in the material is 1.5 or more, and (2) a cumulative pore volume having a pore size of 3.6 nm to 200 nm in the material is 0.9 cc/g or more, and a cumulative pore volume having a pore size of 3.6 nm to 5000 nm is 2.6 cc/g or more.

Abstract: Provided is powdered gyrolite-type calcium silicate that has a relatively large particle size, yet is endowed with both a high oil absorption and a high particle strength. The powdered gyrolite-type calcium silicate has (1) an oil absorption of at least 2.8 mL/g, (2) an average particle diameter of at least 40 ?m, and (3) in treatment where the gyrolite-type calcium silicate is charged into a laser diffraction-type particle size analyzer within the range of a diffraction volume of from 0.1 to 0.6 and circulated at a flow rate of 32.5 mL/s for 5 minutes, a percent change in average particle diameter following treatment with respect to average particle diameter before treatment of 15% or less.