Product name: Methylene blue
CAS No. 61-73-4
MF:C16H18ClN3S·3H2O
MW: 373.9
Methylene blue(C16H18ClN3S):98.0%min
Indicator range: qualified
Loss on drying:15.0%max
Residue on ignition (as sulfate): 0.5%max
As: 0.0005%max
Zn: 0.02%max
Cu: 0.03%max
Methanol-soluble test: qualified