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EC number: 242-893-1
CAS number: 19223-55-3
1: Summary of guideline criteria and values during test
pH of dilution water at 0h
pH at 0h
20 ±2 °C
Dissolved oxygen (%)
Salinity at 0h in dilution water (‰)
Informal reference toxicant 48h LC50 (mg/L)
Control mortality (%)
2 - Mortality of Acartia after 24h and 48h exposure
Number / dead immobile at 24h
Number / dead immobile at test termination
3 - Mortality of Acartia after 48h exposure to 3,5 DCP and control media
Number dead / immobile
Proportional response 48h
The short-term aquatic toxicity of the REACh substance
amino]propyl]ammonium hydroxide (EC 242-893-1) was investigated in a
GLP-compliant study performed with the marine crustacean species Acartia
tonsa in accordance with ISO 14669:1999 (Water Quality -
Determination of Acute Lethal Toxicity to Marine Copepods (Copepoda;
Crustacea)). The test item exhibited adverse effects on Acartia tonsa at
nominal concentrations of 32 mg test item/L and higher. The 48h-EC50
value was determined to be 66.75 mg test item/L (corresponding to ca. 20
mg active content/L).
The short-term aquatic toxicity of the REACh substance was investigated
in a GLP-compliant study (Hudson, 2009) performed with the marine
crustacean species Acartia tonsa in accordance with ISO
14669:1999 (Water Quality - Determination of Acute Lethal Toxicity to
Marine Copepods (Copepoda; Crustacea)). The test item exhibited adverse
effects on Acartia tonsa at nominal concentrations of 32 mg test
item/L and higher. The 48h-EC50 value was determined to be 66.75 mg test
item/L (corresponding to ca. 20 mg active content/L).
NB. In case the solid content of the test item was not reported in a
study report, ECx values were expressed in active content. If relevant,
these values were used for the chemical safety assessment (worst-case
The short-term toxicity to marine invertebrate species of the substance
EC 242-893-1 was investigated in a GLP-compliant study (Hudson, 2009)
performed in accordance with standard methods, without deviations. The
study is considered as reliable with restrictions (Klimisch 2) and was
selected as key study for the endpoint.
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