... ,CAS Number: 9004-61-9 3,White Powder 4,99% Purity 5,GMP Manufactory hyaluronic acid powder 1. Food Grade 2. Cosmetic Grade ... 3. Eyedrops Grade(Pharm Grade) ItemsStandardDescriptionWhite or light-white granule or powder,soluble in waterGlucose aldehyde acid content %≥40pH value6.0 ... 1,Advanced equipment 2.Strict Test 3.Certificate hyaluronic acid powder