Sulfachloropyridazine sodium Formula: C10H8ClN4NaO2S Molecular Weight: 306.71 CAS NO. :23282-55-5 Appearance: light yellow crystalline powder PH: 7.2 ~ 9.2 Moisture, KF method: 5.0% max Heavy metal: 10ppm max Arsenic: 2ppm max Appearance: light yellow crystalline powder, odorless, soluble in water. mainly used in animal E. coli and Pasteurella infections. Email: cx05 (at) yccreate (dot) com Skype: annaaqq Mob: 86 18872220795