Minol Acids & Chemicals Pvt. Ltd. specializes in manufacturing mix cleaves acid, chicago acid and violet acid. Chicago acid is known as amino-naphthol disulfonic acid. It is a gray colored dry powder used as an organic intermediate dyestuff in textile, leather, food and paper industries. Violet acid is a gray colored moist material. Koch acid is a pink color powder. It is known as amino-H acid and used as an organic dyestuff.