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Surface tension

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Description of key information

Propylene glycol n-propyl ether is a low molecular weight organic compound which does not meet the definition of a surface active substance as it has no surface-active properties and does not consist of one or more hydrophilic and one or more hydrophobic groups of such a nature and size that it is capable of reducing the surface tension of water, and of forming spreading or adsorption monolayers at the water-air interface, and of forming emulsions and/or microemulsions and/or micelles, and of adsorption at water-solid interfaces.

Key value for chemical safety assessment

Additional information

According to the ECHA Guidance for the implementation of REACH (“Guidance on information requirements and chemical safety assessment - Chapter R.7a: Endpoint specific guidance”; R.7.1.6 SURFACE TENSION, May 2008) for organic compounds, the surface tension study needs only be conducted if based on structure, surface activity is expected or can be predicted or surface activity is a desired property of the material.