Polymixin B Sulfate CAS NO.1405-20-5

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Appearance White to almost white powder, hygroscopic

Solubility Freely soluble in water, slightly soluble in alcohol

Indentification A. Liquid chromatographic

B. A Reddish violet color is produced

C. Test for sulfate

Assay(Mirobial, on dry basis) 6500IU/MG min

Specific optical rotation -70?~-90?

PH(2%) 5.0-7.0

PH(0.5%) 5.0-7.5

Loss on drying  7.0% max 

Phenylalanine 9.0-2.0%

Sulphated ash 0.75% max

Heavy metals 20ppm max

Pharticle size 99%: 30μM max

90%: 25μM max

75%: 20μM max

Diameter: 8μM max

Storage In well closed, light-resistant&tight conotainers, under 2-35℃, floating range: 3℃