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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Phototransformation in air

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Administrative data

Link to relevant study record(s)

Description of key information

DT50 between 22 hours and 42 hours (EPISuite calculation)

Key value for chemical safety assessment

Additional information

Since no information on photodegradation of C8-14AS NH4 & TEA (CAS 96690-74-3) is available, in accordance to Regulation (EC) No. 1907/2006 Annex XI, 1.5 a read-across to another structurally related category members was conducted. Read-across data from C8AS Na (CAS 142-31-4), C10AS Na (CAS 142-87-0), C12AS Na (CAS 151-21-3) and C14AS Na (CAS 1191-50-0) were used. The half-life time in the air was assessed based on the calculation method using EPI Suite v 3.12, AOPWIN v 1.91.

The half-life time in the air is:

For C8AS Na: 42 hours

For C10AS Na: 32 hours

For C12AS Na: 26 hours

For C14AS Na: 22 hours

Based on the above data it can be concluded that the half-life of C8-14AS NH4 & TEA (CAS 96690-74-3) in the air is between 22 hours and 42 hours.