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EC number: 256-277-5 | CAS number: 46729-07-1
- 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
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental starting date: 03 January 2017 Experimental completion date: 23 March 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- flask method
- Specific details on test material used for the study:
- Identification: 4-tert-butylcyclohexyl methacrylate
(CAS 46729-07-1)
Appearance/physical state: clear colourless liquid (on melting)
Batch: DAR-16030
Purity: 89.2%
Expiry / retest date: 01 August 2018
Storage conditions: approximately 4 °C, in the dark - Key result
- Water solubility:
- 0 g/L
- Conc. based on:
- test mat.
- Incubation duration:
- >= 23.75 - <= 144 h
- Temp.:
- 20 °C
- pH:
- >= 6.4 - <= 6.8
- Conclusions:
- The water solubility of the test item has been determined to be 4.0 x 10-5 g/L of solution at 20.0 ± 0.5 °C.
- Executive summary:
Water Solubility. 4.0 x 10-5g/L of solution at 20.0 ± 0.5 °C, usingaflask methoddesigned to be compatible with Method A.6 Water Solubility of Commission Regulation (EC) No 440/2008 of 30 May 2008andMethod 105 of the OECD Guidelines for Testing of Chemicals, 27 July 1995.
Reference
Preliminary Test
The preliminary estimate of water solubility was 1.3 x 10-4 g/L at 20 °C.
Main Test
The mean total peak areas relating to the standard and sample solutions are shown in the following table:
Solution |
Mean total peakarea |
Standard solution 0.163 mg/L |
3.1569 x 105 |
Standard solution 0.113 mg/L |
1.9992 x 105 |
Matrix blank |
none detected |
Sample number 1 |
3.0686 x 104 |
Sample number 2 |
3.6655 x 104 |
Sample number 3 |
4.6338 x 104 |
Standard solution 0.125 mg/L |
2.2996 x 105 |
Standard solution 0.151 mg/L |
2.6720 x 105 |
Matrix blank |
none detected |
Sample number 4, replicate dilution A |
3.6934 x 104 |
Sample number 4, replicate dilution B |
3.6490 x 104 |
Sample number 5, replicate dilution A |
4.4513 x 104 |
Sample number 5, replicate dilution B |
3.6580 x 104 |
Sample number 6, replicate dilution A |
2.7828 x 104 |
Sample number 6, replicate dilution B |
2.8325 x 104 |
The concentration (g/L) of test item in the sample solutions is shown in the following table:
Sample number |
Time shaken at 30 ºC (hours) |
Time equilibrated at 20 ºC (hours) |
Concentration (g/L) |
Solution pH |
1 |
23¾ |
24 |
3.3 x 10-5 |
6.7 |
2 |
48¼ |
24 |
4.0 x 10-5 |
6.5 |
3 |
72 |
24 |
5.0 x 10-5 |
6.6 |
4 |
96 |
24 |
4.1 x 10-5 |
6.7 |
5 |
120 |
24 |
4.5 x 10-5 |
6.8 |
6 |
144 |
24 |
3.1 x 10-5 |
6.4 |
Mean concentration : 4.0 x 10-5 g/L
at 20.0 ± 0.5 ºC
Range : 3.1
x 10-5 to 5.0
x 10-5 g/L
Standard Deviation : 7.1 x 10-6g/L
Validation
The linearity of the detector response with respect to concentration was assessed over the nominal concentration range of 0.02 to 0.20 mg/L. The results were satisfactory with a first order correlation coefficient (r) of 0.9966 being obtained.
Discussion
On completion of the equilibration period, the sample solutions were clear and colorless with excess test item visibly present. After centrifugation, the isolated supernatants were visually observed to be free from un-dissolved test item prior to diluting for analysis.
On analysis of samples 1 to 3 inclusive, using the standardized initial saturation periods specified in the regulatory method of up to 72 hours, a possible increasing trend in concentration versus time was observed. Therefore additional samples (sample 4 to 6 inclusive) were performed such that the initial saturation period evaluated was increased to 144 hours. This additional analysis confirmed that the initial potential trend could be attributed to random experimental variance alone and that saturation had in fact been achieved. The concentration of all samples prepared have been used in calculation of the mean
The preliminary water solubility test indicated that the column elution method should have been performed as the solubility was less than 1 x 10-2g/L. However, due to the physical nature of the test item, it was not possible to use this method.
It was noted that individual water solubility results failed to satisfy the specified variability of ± 15% of the mean for the flask method specified in the regulatory methods. This was attributed to the extremely low solubility of the test item and was not considered to impact on the validity of the determination. The analytical data did however satisfying the variability criteria of ± 30% of the mean stated for the column elution method, which is specific to addressing lower solubility concentrations below 10 mg/L.
Description of key information
The water solubility of the test item has been determined to be 4.0 x 10-5 g/L of solution at 20.0 ± 0.5 °C.
Key value for chemical safety assessment
- Water solubility:
- 0.04 mg/L
- at the temperature of:
- 20 °C
Additional information
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