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EC number: 242-149-6 | CAS number: 18268-70-7
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 1991
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- secondary literature
- Remarks:
- Study reviewers stated, "Reliable with restrictions [Klimisch reliability 2]. No information was indicated for number of replicates used in study.".
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 E (Ready biodegradability: Modified OECD Screening Test)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Specific details on test material used for the study:
- Purity was 95%
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- No further information was given.
- Duration of test (contact time):
- ca. 28 d
- Parameter followed for biodegradation estimation:
- DOC removal
- Reference substance:
- other: Positive control: mineral nutrient soln + inoculum + sodium benzoate (at DOC of 20 mg /L)
- Reference substance:
- benzoic acid, sodium salt
- Preliminary study:
- none specified.
- Key result
- Parameter:
- % degradation (DOC removal)
- Value:
- ca. 98
- Sampling time:
- 28 d
- Results with reference substance:
- none specified.
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- other:
- Remarks:
- biodegradable, but not enough samples were taken to determine whether the test material met the 10-day window criteria for readily biodegradable classification.
- Conclusions:
- Biodegradation was 98% in 28 days for the test material.
1
Reference
Biodegradaton Results
|
% Biodegradation (% of DOC) |
||||
Day |
0 |
7 |
14 |
21 |
28 |
Test Substance |
0 |
49 |
72 |
92 |
98 |
Positive Control (sodium benzoate) |
0 |
91 |
91 |
90 |
100 |
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.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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