Registration Dossier
Registration Dossier
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EC number: 271-517-9 | CAS number: 68583-52-8
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- weight of evidence
- Justification for type of information:
- Read across to members of the US HPV Glycol Esters category. See attached file.
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- 98
- Sampling time:
- 28 d
Reference
Description of key information
The read-across chemical heptanoic acid, oxybis(2,1 -ethanediyloxy-2,1 -ethanediyl)ester (CAS 70729 -68 -9) underwent ca. 98% degradation based on DOC removal in a 28 day period. There were insufficient data points taken to determine if the 10 -day window requirement was fulfilled.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable but failing 10-day window
- Type of water:
- freshwater
Additional information
The test substance is a member of a category of aliphatic esters submitted by The American Chemistry Council's (ACC) Aliphatic Esters Panel (Panel) under the High Production Volume (HPV) Chemical Challenge Program (ACC, 2003). Information from a Screening Information Data Set (SIDS) developed in that program serves as supplementary or weight-of-evidence in the current dossier. Category ester compounds with similar structures and functionalities were readily biodegradable in standard aerobic biodegradation tests. These materials included ethane-1,2 -diylbis(oxyethane-2,1 -diyl) bisheptanoate (CAS 7434 -40 -4), heptanoic acid, oxybis(2,1 -ethanediyloxy-2,1 -ethanediyl)ester (CAS 70729 -68 -9), and heptanoic acid, ester with 2,2,4 -trimethyl-1,3 -pentanediol (CAS 71839 -38 -8.
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