... whitish to pale yellow,free-flowing, spherical shaped granular powder. High Quality Vitamin d3 500:a free-flowing, uniform shaped granular powder ... .10% smaller than 150m (through US standard mesh 100)Bulk density: approximately 0.6gram/cm3Application:for preventing animal from rickets, rationalizing ... product,please feel free to contact us at any time. High Quality Vitamin d3 500