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EC number: 204-694-8 | CAS number: 124-28-7
In a reliable study (reliability category 2) on C12-14 DMA assessing toxicity in regard to seedling emergence, phytotoxic effects, shoot height and shoot fresh weight for three plant species, the most sensitive endpoint was shoot height for rape: NOEC (21 d) = 10 mg/kg soil dry weight.
Toxicity of C12-14 DMA in regard to seedling emergence, phytotoxic effects, shoot height and shoot fresh weight of terrestrial plants was assessed in a reliable (category 2) seedling emergence test over a period of 21 days (OECD 208, compliant to GLP) at nominal concentrations of 10 -32 -100 -320 -1000 mg/kg soil dry weight (DW). Tested plant species were the monocotyledon oats (Gramineae) and the two dicotyledons rape (Brassicaceae) and red clover (Leguminosae). Validity criteria of the OECD-guideline were met except for control seedling emergence of red clover (<70%; reason for RL 2 – no other restrictions regarding reliability). The following NOECs (21 d) were determined:
Shoot height: oat 320 mg/kg DW;rape 10 mg/kg DW; red clover 32 mg/kg DW
Fresh weight: oat 100 mg/kg DW; rape 100 mg/kg DW; red clover 32 mg/kg DW.
Phytotoxic effects: oat (decrease in length) 320 mg/kg DW; rape (decrease in length) 100 mg/kg DW; rape (chlorosis) 100 mg/kg DW
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