Registration Dossier
Registration Dossier
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EC number: 939-368-0 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Short-term toxicity to fish:
In a 96-h acute toxicity study, rainbow trout (Oncorhynchus mykiss) were exposed to Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda at 100 mg/L nominal concentrations (limit test) under semi-static conditions according to the OECD guideline N° 203 (1992).
The 96-h LC50was >100 mg/L
The NOEC values, based on mortality/sub-lethal effects, was 100 mg/L.
No sub-lethal effects were observed.
Based on the results of this study, Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda was not harmful to fish.
Short-term toxicity to aquatic invertebrates:
In a 48–hr-acute toxicity study, daphnids (Daphnia magna) were exposed to Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda at 0.1, 1.0, 10 and 100 mg/L atnominal concentrations (range-finding/limit test) under semi-static conditions according to the OECD guideline N° 202 (2004).
The 48– hour EC50was > 100 mg/L.
The NOEC values, based on mortality/sub-lethal effects, was 100 mg/L.
Based on the results of this study, Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda was not harmful to invertebrate.
Toxicity to aquatic algae:
In a 72 hour acute toxicity study, the cultures ofPseudokirchneriella subcapitatawere exposed to Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic sodaat nominal concentrations of 12.5, 25, 50, 100 and 200 mg/L under static conditions according to the OECD guideline N° 201 (2011).
The following results were determined:
NOEC = 12.5 mg/L
ErC50(0 -72h) >200 mg/L
EyC50(0-72h) > 141.6 mg/L
Based on the results of this study, Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda was not harmful to algae.
Toxicity to microorganisms:
In a reliable study, the inhibitory effect of the Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda on the respiration rate of aerobic wastewater microorganisms of activated sludge was investigated in a 3 -hour respiration inhibition test according to OECD guideline for Testing of Chemicals, n°209 (1984).
The following results were determined:
NOEC (mg/L): LOEC (mg/L): EC50 (mg/L):
Total Respiration 0.16 0.51 >5.2
Heterotrophic Respiration 0.05 0.16 >5.2
Nitrification Respiration 1.64 5.2 >5.2
The overall NOAEC determined during this study was 0.05 mg/L, based on heterotrophic respiration. The overall EC50 was determined to be greater than the highest level tested, 5.2 mg/L.
Based on the results of this study, Reaction product of naphthalene, propan-2-ol, sulfonated and neutralized by caustic soda has effect on the respiration rate of activated sludge microorganisms.
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