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Ecotoxicological information

Toxicity to terrestrial plants

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Description of key information

A study on terrestrial plants was conducted with the read across substance didecyldimethylammonium chloride (CAS 7173-51-5) according to OECD Guideline 208 using mustard (Brassica alba), mung bean (Phaseolus aureus) and wheat (Triticum aestivum) as test species. The EC50 were: 283 (mustard), 857 (wheat), >1280 mg/kg dw (mung).

Key value for chemical safety assessment

Short-term EC50 or LC50 for terrestrial plants:
283 mg/kg soil dw

Additional information

A study on terrestrial plants was conducted with the read across substance didecyldimethylammonium chloride (CAS 7173-51-5) according to OECD Guideline 208 using mustard (Brassica alba), mung bean (Phaseolus aureus) and wheat (Triticum aestivum) as test species. For each species, 40 seeds were sown (8 replicates with 5 seeds each) in each treatment, water and solvent controls. Mung bean treatments were: 5, 20,80,320 and 1280 mg /kg soil dw, mustard and wheat treatments were: 100,200,400,800 and 1600 mg /kg soil dw. Plants were harvested 14-17 days after germination and weighed as wet and dry weight. There was no treatment-related effect on germination or seedling survival in any species up to the highest test concentration. For all the 3 plants species, there was a significant reduction in growth (wet and dry weights) at the higher treatments. For mung bean the maximum reduction in dry weight was 38% compared to control, while mustard and wheat showed reduction of 80 and 63%, respectively. The EC50 were: 283 (mustard), 857 (wheat), >1280 mg/kg soil dw (mung).