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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

In a 3-hour toxicity test to activated sludge bacteria  the respiration inhibition was measured by oxygen consumtion. The EC 50 was > 100 mg/l, and the EC20/10 was also > 100 mg/l during the 3 hr-period.  The highest tested concentration, and the EC 10 /NOEC was 41.5 mg/l. The test was performed according to OECD guideline 209 
TGIC was added as dry material (amount by weighing of directly added substance) and no analytical determination of the concentration was performed.
Based on the results the toxicity of TGIC towards sludge bacteria is considered low.

Key value for chemical safety assessment

EC50 for microorganisms:
100 mg/L
EC10 or NOEC for microorganisms:
100 mg/L

Additional information

The test performed was in conformity with OECD guideline 209, and showed a low toxicity of TGIC towards activated sludge bacteria, based on respiration inhibition. The EC50 of > 100 mg/l, and the EC 20/10 > 100 mg/l can be considered as practically non-toxic , and no damage of sewage treatment plants is to be expected.

No further test have been conducted as environmental concentrations of TGIC are extremely low.