Ferene disodium salt is a yellow powder often used as a reagent in colorimetry for iron. It is the preferred chemical compound because of its high molar absorptivity which makes it more sensitive than similar reagents. As such, it is commonly used in industries, pharmaceuticals, and manufacturing. It is sometimes called Ferene S, F-0960, and other synonyms in the chemical industry. It is made by several companies who sell it in turn to other businesses. Its molecular weight is 494.4 grams per mol. The hydrogen bond accepter count is 12 while the rotatable bond count is 3. The hydrogen bond