Colistin sulfate

硫酸粘杆菌素

Also known as: Colistin sulphate, Polymyxin E, Polymyxin E sulfate, Colistin sulfate salt, Colistin, Belcomycin, Colomycin, Colistin sulfate (1:1) (salt), N-[(2S)-4-amino-1-[[(2S,3R)-1-[[(2S)-4-amino-1-oxo-1-[[(3S,6S,9S,12S,15R,18S,21S)-6,9,18-tris(2-aminoethyl)-3-[(1R)-1-hydroxyethyl]-12,15-bis(2-methylpropyl)-2,5,8,11,14,17,20-heptaoxo-1,4,7,10,13,16,19-heptazacyclotricos-21-yl]amino]butan-2-yl]amino]-3-hydroxy-1-oxobutan-2-yl]amino]-1-oxobutan-2-yl]-6-methyloctanamide sulfate

Colistin sulfate (CAS 1264-72-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula 2(C₅₂H₉₈N₁₆O₁₃)·5(H₂SO₄) and a molecular weight of 2801.27 g/mol. It is also known as Colistin sulphate, Polymyxin E and Polymyxin E sulfate. Key properties include a melting point of 200-220°C, a boiling point of 1537.3±65.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 883.5±34.3 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1264-72-8
Jingsj CID
J-1107875-9
Molecular Formula
2(CHNO)5(HSO)
Chinese Name
硫酸粘杆菌素
Molecular Weight
2801.27 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point200-220°C
Boiling Point1537.3±65.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point883.5±34.3 °C

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

Frequently Asked Questions

What is the CAS number of Colistin sulfate?

The CAS number of Colistin sulfate is 1264-72-8.

What are the molecular formula and molecular weight of Colistin sulfate?

Colistin sulfate has molecular formula 2(C₅₂H₉₈N₁₆O₁₃)·5(H₂SO₄) and molecular weight 2801.27 g/mol.

Is Colistin sulfate hazardous?

Colistin sulfate has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Colistin sulfate (CAS 1264-72-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1107875-9 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.