Black 166 also known as 2,7-Naphthalenedisulfonic acid is an organic class coloring agent that is commonly used in textile industries to impart colors on cellulose fibers. It can also be used in printing and leather dyeing applications. It is used as a substitute for direct black 38 dye. The offered Black 166 has a molecular formula of C35H26N10Na2O8S2 with an average molar of 824.76 grams per mol. It has a hydrogen bond donor and acceptor count of 5 & 17 respectively.
- Excellent water solubility,
- Double & single bond extending properties,
- Anionic in nature & needs electrolysis for exhaustion.