What is BS EN 1890 - Determine the cloud point of non-ionic surface active agents about?
BS EN 1890 discusses surface-active agents. BS EN 1890 methods for the determination of the cloud point of solutions of non-ionic surface-active agents obtained by the reaction of ethylene oxide with a hydrophobic base molecule.
BS EN 1890 primarily applies to surfactants obtained by reaction of ethylene oxide with hydrophobic base molecules, such as fatty alcohols, fatty acids, long-chain alkylphenols, fatty amines, fatty acid esters of sugar derivatives among other ethoxylated nonionic surfactants, which are by far the most commonly used.
Who is BS EN 1890 - Determine the cloud point of non-ionic surface active agents for?
BS EN 1890 on determine the cloud point of nonionic surface-active agents is useful for:
- Cosmetic manufacturers
- Detergents manufacturers
- Fuel additives
- Quality control personnel
- Testing laboratories
Why should you use BS EN 1890 - Determine the cloud point of non-ionic surface active agents?
Solutions of non-ionic surface-active agents obtained by the reaction of ethylene oxide with a hydrophobic base molecule, in water or in mixtures of water and organic solvents become turbid at a given temperature as the temperature increases and finally separate into two liquid phases. The process is reversible, and the system becomes homogeneous again upon cooling. The temperature at which the solution becomes clear upon cooling is determined as the "cloud point". This temperature is characteristic of a particular surfactant. This temperature increases with the amount of ethylene oxide chemically combined in the surfactant molecule for a given composition of solvents.
BS EN 1890 provides you with a method for determining the cloud point of solutions of non-ionic surface-active agents obtained by the reaction of ethylene oxide with a hydrophobic base molecule. BS EN 1890 provides you with guidance on reagents and apparatus required for the method. BS EN 1890 guides you with sampling preparation and storage. BS EN 1890 guides you with the procedure and expression of results.
What’s changed since the last update?
BS EN 1890:2006 supersedes BS EN 1890:1999. BS EN 1890:2006 includes some technical changes with respect to BS EN 1890:1999. These include:
- The purity of Butyldigycol was changed to correspond to commercially available products
- The apparatus was simplified