Bacitracin is a heterogeneous mixture of cyclic polypeptides which inhibit formation of bacterial cell walls.
Appearance: White to off-white or light yellowish, hygroscopic powder
Solubility: Soluble in water to 50mg/ml
Potency (Anhydrous): 40-65 IU/mg
Loss on Drying: 5%
pH (10%, Water, 25 degrees C): 6.0-7.5
TLC Identification: Passes
Zinc Content: 4-6%
Melting Point: 250 degrees C