CAS NO: 7782-78-7 
Molecular :HNO5S 
Molecular weight: 127.0766
Dangerous goods mark O:Oxidizing agent
T:Toxic
Risk Phrases :R8; R14; R23/24/25; R35;
Safety terminology:S17; S26; S36/37/39; S45; 
Physical and chemical properties
use: Diazo disperse dyes mainly used for substitution reaction of sodium nitrite to reduce costs, improve product quality