We supply calcium proportionate at a very moderate price, Calcium proportionate is a food additive present in many foods, especially baked goods. It acts as a preservative to help extend shelf life by interfering with the growth and reproduction of microorganisms, Calcium proportionate is formed by neutralizing chemically-synthesized prop ionic acid with calcium hydroxide. Although it has been a preservative of choice in bakery for decades, As a matter of fact Calcium proportionate is a white, water-soluble powder, CaC6H10O4, used in bakery products to inhibit the growth of fungi. Do contact us immediately. Thanks