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EC number: 263-142-4
CAS number: 61790-50-9
The EC50 for members of the category Rosin, hydrogenated rosin and their salts is determined to be 39.6 mg/L based on growth rate and 16.6 mg/L based on biomass.
are studies available for a number of the members of this category.
are available for rosin. Inveresk (2001c) determined toxicity to
Selenastrum capricornutum using WAFs. No analytical verification of test
concentrations was conducted. The study determined an EL50 of >1000
mg/L, Another study (Akzo Nobel, 1998d) is also available using
Selenastrum capricornutum which also uses WAFs but did not carry out any
analytical verification. An EL50 of >100 mg/L was determined in this
A study with Tall
oil rosin, which is considered to be equivalent to rosin, is also
available (Akzo Nobel, 1998d). The study used WAFs with no analysis of
test concentrations. No toxicity was observed at a concentration of 100
A study was
conducted with Resin acids and Rosin acids, hydrogenated, potassium
salts (Eastman, 2005c), which did not analyse for test concentrations.
An EC50 of 39.6 mg/L was determined based on growth and 16.6 mg/L based
A reliable study
is available for Rosin, reaction products with formaldehyde (Harlan
Laboratories, 2010i). The study followed OECD guideline 201. The test
substance is a UVCB with low water solubility and the study was
conducted using Water Accommodated Fraction at a single loading rate of
100 mg/L. No inhibition was observed throughout the study in the control
or at any of the loading rate WAF. The 48 hour NOELR was determined to
be 100 mg/L and the 48 hour EL50 was > 100 mg/L.
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