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EC number: 230-813-8 | CAS number: 7328-22-5
- 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:
- key study
- Study period:
- 03.08.1999 - 11.02.2000
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- GLP.
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Version / remarks:
- adopted 17 July 1992 and EU Method C.4-C, 31 July 1992
- Deviations:
- no
- GLP compliance:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Type: inoculum was collected from a water treatment plant containing effluent from a predominantly domestic origin.
Collected from: the water treatment plant Emeraude (SIARR) (76141 Petit-Quevilly, France).
Sampling date: 28 July 1999.
Preparation: the inoculum was prepared by initially sieving sewage sludge and centrifuging three times for at least 5 minutes. For each centrifugation, the supernatant was rejected and the pellet was redispersed in the mineral medium.
In order to wash out the dissolved organic carbon (DOC) and to lower the carbon organic content, the inoculum was preconditioned for 7 days
before use. Air was bubbled through the inoculum during this preconditioning period. - Duration of test (contact time):
- 28 d
- Initial conc.:
- 48 mg/L
- Based on:
- act. ingr.
- Initial conc.:
- 10 mg/L
- Based on:
- other: TOC
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- Conditions during the test
Temperature: 20 -24°C.
lllumination: the test was carried out in dark glass bottles fitted with dark glass stoppers and aeration tubes to reduce the quantity of light reaching
the test suspensions.
Duration of the test: 28 days.
Culture homogeneity: in order to homogenize the solution, all test suspensions were agitated using magnetic stirrers.
Aeration: air was bubbled through each parallel at the rate of 30 - 100 mVmin (checked daily and reset if necessary) during the test.
pH: was measured before the beginning of the test in the mineral medium and at the end of the test in all test suspensions .
Loading: test vessels were loaded at 3 litres of suspension per flask.
Treatment
Five flasks were used for the test:
two flasks containing the inoculum (inoculum blanks),
two flasks containing the test substance (at 10 mg/I of TOC) and inocu!um (test so!utions),
one flask containing the reference substance (sodium acetate at 10 mg/I of TOC) and inoculum
(procedure control).
Parallel groups were prepared by adding 2.4 litres of mineral medium to each of the test flasks. Inoculum was added to provide a final concentration of 11 mg/I of suspended solids (dry weight) in 3 litres of suspension.
The test flasks were aerated with CO2 scrubbed air overnight to purge the system of carbon dioxide and then attached in parallel to a series of threewash bottles filled with 100 ml of 0.0125 M barium hydroxide solution (to trap any C02 released from the test vessels). The test
and reference (sodium acetate) substances were added, as appropriate, to the flasks to give a test and reference substance concentrations of 10 mg of TOC per litre. When all the substances had been added, the volume of the suspensions was made up to 3 litres. Carbon dioxide-scrubbed air was bubbled through the suspensions at the same rate for all preparations. - Reference substance:
- acetic acid, sodium salt
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 91
- Sampling time:
- 28 d
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 65
- Sampling time:
- 16 d
- Remarks on result:
- other: End of 10 day window
- Details on results:
- The 10-day window (the 10 days immediately following the attainment of 10% biodegradation) started on the 6th day. Biodegradation of the test substance BUTYL DIGLYCOL METHACRYLATE totaled 65% at the end of this 10-day window (16th day) and 91% at the end of the test.
Under our experimental conditions, the test substance BUTYL DIGLYCOL METHACRYLATE
was readily biodegradable in a 28-day modified Sturm test. - Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The ready biodegradation of Butyldiglycol methacrylate was investigated in a CO2 evolution test over a period of 28 days and using domestic sewage as inoculum. Inoculum blank and procedural/functional control with the reference substance sodium acetate were performed.
The 10-day window started on day 6. Biodegradation totalled 65% at the end of the 10 day window (day 16) and 91% at the end of the test period. The test item proved to be readily biodegradable and fulfilling the 10-d window criterion. - Executive summary:
The ready biodegradation of Butyldiglycol methacrylate was investigated in a study conducted according to OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test) adopted 17 July 1992 and EU Method C.4-C, 31 July 1992, over a period of 28 days using sewage sludge sampled from the aeration tank of a predominantly domestic sewage treatment plant as inoculum. The biodegradation rate was determined by measurement of CO2 evolution. Inoculum blank and procedural/functional control with the reference substance sodium acetate were performed.
After 28 days the degradation of Butyldiglycol methacrylate reached 91 %.The functional control reached the pass level >60% after 14 d.
This study is regarded as reliable without restriction and satisfies the guideline requirements for ready biodegradation. Butyldiglycol methacrylate proved to be readily biodegradable and fulfilling the 10-d window criterion.
NOTE: Any of data in this dataset are disseminated by the European Union on a right-to-know basis and this is not a publication in the same sense as a book or an article in a journal. The right of ownership in any part of this information is reserved by the data owner(s). The use of this information for any other, e.g. commercial purpose is strictly reserved to the data owners and those persons or legal entities having paid the respective access fee for the intended purpose.
Reference
Cumulative percentage of biodegradation
|
Test substance |
Reference substance |
||
Day |
No. 1 |
No. 2 |
Average |
|
1 |
0.90 |
3.10 |
2.00 |
3.50 |
4 |
1.20 |
7.19 |
4.20 |
16.78 |
5 |
4.70 |
11.39 |
8.04 |
29.67 |
6 |
5.89 |
13.09 |
9.49 |
34.17 |
8 |
13.14 |
23.73 |
18.43 |
38.22 |
12 |
36.17 |
49.06 |
42.61 |
53.95 |
14 |
51.05 |
62.54 |
56.80 |
62.44 |
16 |
60.10 |
70.39 |
65.24 |
67.89 |
18 |
64.14 |
76.63 |
70.39 |
72.33 |
21 |
69.99 |
81.68 |
75.83 |
76.08 |
25 |
77.43 |
86.42 |
81.93 |
81.23 |
28 |
87.57 |
93.66 |
90.62 |
94.26 |
Description of key information
Butyldiglycol methacrylate is classified as readily biodegradable. The 10-day criterion for ready biodegradability was met.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
The ready biodegradation of Butyldiglycol methacrylate was investigated in a study conducted according to OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test) adopted 17 July 1992 and EU Method C.4-C, 31 July 1992, over a period of 28 days using sewage sludge sampled from the aeration tank of a predominantly domestic sewage treatment plant as inoculum. The biodegradation rate was determined by measurement of CO2 evolution. Inoculum blank and procedural/functional control with the reference substance sodium acetate were performed.
After 28 days the degradation of Butyldiglycol methacrylate reached 91 %.The functional control reached the pass level >60% after 14 d.
This study is regarded as reliable without restriction and satisfies the guideline requirements for ready biodegradation. Butyldiglycol methacrylate proved to be readily biodegradable and fulfilling the 10-d window criterion.
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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