An ester formed by the esterification of Sorbitan with the fatty acid Oleic Acid, followed by polymerisation with ethylene oxide to form a polyoxyethylene compound (Polysorbate), that is a non-ionic, water soluble, surface active, oil in water emulsifying agent.
The compound is also soluble in alcohols, ether, chloroform and cottonseed oil, but is insoluble in petroleum, liquid paraffin and mineral oils.
A clear, yellow brown oily liquid with a faint, characteristic odour and a warm, slightly bitter taste. Relative Density about 1.08. Viscosity at 25°C, about 400 cP. A 5% solution in water has a pH of 6-8.
| Size | 100ml, 500ml |
|---|
Filter sterilised liquid supplements ready for incorporation into appropriate culture media for the selective isolation and provisional identification of staphylococci and some other organisms from foods and clinical material.
potassium Tellurite
Potassium Iodide
