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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

The 96hr LC50 of benzyl butyl phthalate to Cymatogaster aggregata was 0.51 mg/L

Key value for chemical safety assessment

Additional information

Ozretich et. al (1983) performed a 96 hr flow-through test on the saltwater fish Cymatogaster aggregata. This test was performed to a standard guideline (ASTM). The LC50 was determined to be 0.51 mg/L. This test is used as a key study for the fulfilment of this endpoint.

Adams et al. (1995) performed a several 96 h tests (static and flow-though) on Sheephead minnows, Fatehead minnows, Bluegill sunfish and Rainbow trout. The most conservative result came from Sheephead minnows (Cyprinodon variegatus). This test closely followed a standard guideline (OECD 203). The LC50 was determined to be >0.68 mg/L. This test is used as a supporting study for the fulfilment of this endpoint.

Gledhill et al. (1980) performed 96 -hour static tests on four fish species (fathead minnow, bluegill, rainbow trout and sheepshead minnow). LC50s ranged from 1.7 - 5.3 mg/L. The studies are from a review article and there is limited detail on the methods used, however they can be used as supporting information for the fulfilment of this endpoint.

A number of other proprietary studies are available and are used as supporting studies. These report LC50 values of 1.7 - 3.3 mg/L for a variety of fish species.