... or Granular Purity: 98%, 99.5%, 99.9% Specifications Boric acid, also called hydrogen borate, boracic acid, orthoboric acid and acidum boricum, is a ... glazes, cosmetics, soaps, textiles, medicines, etc. ItemIndexFirst gradeSecond gradeBoric acid(%)≥99.5%≥96.5%Water insolubles(%)≤0.05%≤0.15%Sulfate(SO4)(%)≤0 ...