Phenol, 4-(phenylamino)-, sulfurized, leuco deriv.

Endpoint summary

Description of key information

Short-term toxicity to fish

In a 96-hour acute toxicity test on Zebrafish (Danio rerio) the test item Leuco Sulfur Brown 96 had no toxic effect on fish up to a concentration of 100 mg/L. Accordingly, the 96-h LC50 value was determined to be > 100 mg/L and the 96-h NOEC was determined to be 100 mg/L, based on nominal test concentration.

 

Short-term toxicity to invertebrates

The acute toxicity of the test item on Daphnia magna was determined in a 48-hour semi-static test with a test medium renewal after 24 hours according to the OECD Guideline 202. The 48-hour EC50 was calculated to be > 100 mg/L and the 48-hour NOEC was determined to be 50 mg/L.

 

Toxicity to algae

The influence of the test on the growth of the freshwater aquatic plant Lemna gibba (duckweed) was investigated in a 7‑day semi‑static test, based on the OECD guideline 221. The test item had no toxic effects on Lemna gibba during the 7-day test period up to its solubility limit in the test water under the present test conditions.

7d-EC50 (growth rate) > 100 mg/L

7d-LOEC (growth rate) > 100 mg/L

7d-NOEC (growth rate) > 100 mg/L

 

Toxicity to microorganism

The inhibitory effect of the test item on the respiration rate of aerobic wastewater microorganisms of activated sludge was investigated in a 3‑hour respiration inhibition test according to the OECD guideline 209. The test item has no inhibitory effect on the respiration rate of activated sludge after the incubation period of three hours up to and including the test item concentration of 1000 mg/L. Thus, the 3-hour NOEC of the test item to activated sludge microorganisms was 1000 mg/L.