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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Surface tension

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Description of key information

Given the higher hydrophilicity of TEPA compared to TETA we expect the measured surface tension value obtained for TEPA to be at the upper limit of the Cluster 2 PAAs described by the reaction adducts of monomeric and dimeric fatty acids with polyamines and with a residual free amine content of ~10wt%.  The surface tension of TEPA was determined using the Pt ring method and ranged from 63.93 to 68.92 mN/m. The surface tension of TETA is expected to be similar or lower than these values.  From the surface tension results, the CMC was estimated to be 60 mg/L (corrected for amine 54 mg/L). The surface tension 

Key value for chemical safety assessment

Surface tension:
in mN/m at 20°C and concentration in mg/L:

Additional information