Code: km-322
Product name: Methylene blue
CAS No. 61-73-4
MF: C₁₆H₁₈ClN₃S·3H₂O
MW: 373.9
Assay: 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