... aqueous solutions is a hydrophilic colloid. Gelatin derived from an acid-treated precursor is known as Type A, and gelatin derived ... , flakes, or powder; soluble in hot water, glycerol, and acetic acid; and insoluble in organic solvents. Storage: keep dry, clean and ... 20-80 mesh powder. Usage: Consists 18 types of amino acid and 90% collagen. It has good performances in surface activity, impact ...