cas77Dupont CAS77 #ca4c48 Hex Color Code. The hexadecimal color code #ca4c48 is a shade of red. In the RGB color model #ca4c48 is composed of 79.22% red, 29.8% green and 28.24%Citric acid anhydrous for synthesis. CAS 77-92-9, chemical formula (HOOCCH₂)₂C(OH)COOH. - Find MSDS or SDS, a COA, data sheets and more information.