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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Additional information

DPG (1,3 -diphenylguanidine) has been shown to be toxic to fish and algae and harmful to daphnia in several acute studies (fish : 96 h LC50 = 4.2-11 mg/l; algae : 72 h EC50 = 7.5 mg/l; 96 h EC50 = 1.7 mg/l; daphnid : 24 h EC50 = 73.6 mg/l; 48 h EC50 = 17mg/l). The PNEC can be determined using the NOECs from the algae (0.3 mg/l), daphnid chronic 21 d (0.6 mg/l (excluding the EbC50 results)) and long-term fish (1.3 mg/L) studies, by applying an uncertainty factor of 10. The resulting PNEC would be 30 µg/l.