Benzenesulfonic acid, mono- and dialkylation products with C16-20 (even numbered, branched and linear) olefins, barium salts, barium carbonate, overbased, including distillates (petroleum), hydrotreated, solvent-refined, solvent-dewaxed, or catalytic dewaxed, light or heavy paraffinic C15-C50

PBT assessment

PBT assessment: overall result

PBT status:

the substance is not PBT / vPvB

Justification:

Based on read across from structural analogs, the TS (target substance) is expected to show some biodegradation, but not be readily biodegradable. It is also expected that under environmental pH, TS may break down into constituent straight-chain acids, some of which are known to be biodegradable. (Ref: HPV Chemical Challenge Program: Final Revised Test Plan and Assessment with Robust Study Summaries for Linear & Branched Alkylbenzene Sulfonic Acids & Derivatives, Part II: Robust Study Summaries for LAS/ABS Category, prepared by The Soap & Detergent Association LAS/ABS Consortium to U.S. EPA, April, 2008.)

The TS is not expected to be bioaccumulative, because the experimentally determined Log Kow ( 1.71 ± 0.29 at neutral pH) is less than 4.5

Based on acute test data on analogs of the TS in marine species and on structural analogs in freshwater species, the TS is not considered to meet the criteria for T under REACH.  Chronic test data on structural analogs further show that the long-term NOEC well above the T threshold of 0.01 mg/L. It is also not classified as a carcinogen, mutagen or reproductive toxicant, according to CLP regulation. There is no other evidence of chronic toxicity, as identified by the substance meeting the criteria for specific target organ toxicity after repeated exposure (STOT RE category 1 or 2), according to CLP regulation.