Silicon carbide powder and manufacturing method for same

A silicon carbide powder that is a powder of silicon carbide having an α-type crystal system,

• wherein the number of small corner portions among corner portions on a surface of a primary particle of silicon carbide constituting the powder of silicon carbide is 2.5 or less per one primary particle, and
• the small corner portion is such a corner portion, among corner portions present in a contour of the primary particle in a projection image of the primary particle, that twice a curvature radius of the corner portion is ⅕ or less of a Heywood diameter of the projection image of the primary particle,
• wherein a particle diameter D50% is 1 μm or more and 300 μm or less, where the particle diameter D50% is a value at which a cumulative particle volume from a small particle diameter side in a volume-based cumulative particle diameter distribution is 50% of a total particle volume.