Registration Dossier
Registration Dossier
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reaction mass of: pentasodium 4-amino-5-hydroxy-3-{(E)-4-[2-(sulfonatooxy)ethylsulfonyl]phenylazo}-6-{(E)-2-sulfonato-4-[2-(sulfonatooxy)ethylsulfonyl]phenylazo}naphthalene-2,7-disulfonate;tetrasodium 4-amino-5-hydroxy-3-{(E)-4-[2-(sulfonatooxy)ethylsulfonyl]phenylazo}-6-[(E)-2-sulfonato-4-(vinylsulfonyl)phenylazo]naphthalene-2,7-disulfonate;tetrasodium 4-amino-5-hydroxy-6-[(E)-2-sulfonato-4-[2-(sulfonatooxy)ethylsulfonyl]phenylazo}-3-[(E)-4-(vinylsulfonyl)phenylazo]naphthalene-2,7-disulfonate;trisodium 4-amino-5-hydroxy-3-[(2-hydroxyethylsulfonyl)-phenylazo]-6-[(E)-2-sulfonato-4-(vinylsulfonyl)phenylazo]naphthalene-2,7-disulfonate;trisodium 4-amino-5-hydroxy-3-[(E)-4-(vinylsulfonyl)phenylazo]-6-[(E)-2-sulfonato-4-(vinylsulfonyl)phenylazo]naphthalene-2,7-disulfonate;trisodium 4-amino-5-hydroxy-3-[(E)-4-(vinylsulfonyl)phenylazo]-6-[-2-sulfonato-4-(2-hydroxyethylsulfonyl)phenylazo]naphthalene-2,7-disulfonate
EC number: 445-280-9 | CAS number: 371921-40-3
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
LC50 (96h) > 110 mg/l based on nominal concentration
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Dose descriptor:
- LC50
- Effect concentration:
- > 110 mg/L
Additional information
The acute toxicity of the test item Navy MGi 1571 to rainbow trout (Oncorhynchus mykiss) was determined in a 96-hour static test according to the OECD Guideline No. 203. A limit test was performed in accordance with the guidelines to demonstrate that the test item has no toxic effect on the test organisms up to and including the concentration of nominal 110 mg/L (= 100 mg/L without water content; the test concentration was corrected for the water content of the test item of 10 %). Thus the only concentration tested was nominal 110 mg/L and a control.
During the test period the measured test item concentration in the analyzed test medium was in the range from 115 to 119 % of the nominal value. Under the test conditions the test item Navy MGi 1571 was stable during the test period of 96 hours. All reported results are related to the nominal concentration of the test item.
ln the control and at the test concentration of 110 mg/L no mortality or other visible abnormalities were determined during the test period of 96 hours.
Therefore, the 96-hour NOEC (highest concentration tested without toxic effects after the exposure period of 96 hours), and the 96-hour LC0 of Navy MGi 1571 to rainbow trout were determined to be at least 110 mg/1. The NOEC and the LC0 might even be higher than this concentration, but higher concentrations have not been tested, according to the guidelines. The 96-hour LOEC (lowest concentration with toxic effects), the 96-hour LC50 ánd the 96-hour LC100 were clearly higher than 110 mg/L. These values could not be quantified due to the absence of toxicity of Navy MGi 1571 at the tested concentration.
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