Congo Red
Congo Red (Direct Red 28) is an indicator dye that is blue-violet at pH 3.0 and red at pH 5.0. It is an acid dye used in testing for hydrochloric acid in gastric contents but has carcinogenic properties.
| Trivial name | Direct Red 28 |
| Catalog Number | S6065 |
| CAS# | 573-58-0 |
| Size | 25mg |
| Supplier Page | http://www.selleckchem.com/products/congo-red.html |
| Additional Information | https://file.selleck.cn/downloads/struct/congo-red-chemical-structure-s6065.gif |