Welcome to Kolkata Chemical, your reliable source of high-quality Ammonium Sulfate. As a leading supplier, manufacturer, and distributor based in Kolkata, India, we are committed to providing superior chemical products to cater to various industries. CAS NO and Chemical Formula: Ammonium Sulfate, commonly known as (NH4)2SO4, has the CAS number 7783-20-2. It is a crystalline […]