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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

Wolt JD, Shepler K, Marx M, McGovern P & Ruzo LO (1991): The extrapolated Flumetsulam half-life of light exposed and dark control samples is 87 days (R=0.97) and 321 days (R=0.56), respectively.
Wolt J, Shepler K, Yung V (1991): Degradation was found to occur in irradiated samples (t1/2 = 80 days, R2= 0.51) and in dark controls (t1/2 = 127 days, R2= 0.57.
Wolt JD, Shepler K, Chari S, McGovern P & Ruzo LO (1991): Degradation was found to occur in irradiated samples (t1/2=90 days, R=0.97) and in dark controls (t1/2 = 115 days, R=0.98).

Key value for chemical safety assessment

Half-life in soil:
85.67 d

Additional information


As all of the studies were of equal reliability with very similar results, a weight of evidence approach was used. A mean average half-life for soil photolysis from the three studies has been used to address this endpoint:

Mean t1/2 = (80 + 87 + 90) / 3 = 85.67 days