Registration Dossier
Registration Dossier
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EC number: 219-348-1 | CAS number: 2421-28-5
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
In the key study, entitled "3,3’,4,4’-Benzophenonetetracarboxylic dianhydride: Respiration Inhibition Test with Activated Sludge: according to OECD Guideline No. 209 for Testing of Chemicals (2010)" (Report no. 2012-0134-DGO) the NOEC was determined to be 320 mg/L, the EC10 was determined to be 418 mg/L and the EC50 was determined to be greater than 1000 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
- EC10 or NOEC for microorganisms:
- 418 mg/L
Additional information
In the key study, entitled "3,3’,4,4’-Benzophenonetetracarboxylic dianhydride: Respiration Inhibition Test with Activated Sludge: according to OECD Guideline No. 209 for Testing of Chemicals (2010)" ( Report no. 2012 -0134 -DGO), the NOEC of the test item 3,3’,4,4’-Benzophenonetetracarboxylic dianhydride (BTDA) is 320 mg /L. The test item is not toxic up to the concentration of 320 mg /L to activated sludge of a municipal sewage treatment plant. The EC50 of the test item is > 1000 mg/L. The EC10 of the test item is 418 mg/L with a confindence interval p= 95% of 375 mg/L to 460 mg/L.
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