Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 436-690-9 | CAS number: 220727-26-4
- 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
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 111 (Hydrolysis as a Function of pH)
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- The department of health of the government of the United Kingdom
- Radiolabelling:
- no
- Analytical monitoring:
- yes
- Details on sampling:
- - Sampling intervals for the parent/transformation products: Duplicate pH 4, pH 7 and pH 9 buffer samples were analyzed immediately after the test material was placed into the test vessels and after the following sampling periods:
pH 4 (15 °C): 0.167 h, 0.333 h, 0.5 h, 0.667 h; pH 4 (5 °C): 0.5 h, 1 h, 1.5 h; pH 7 (50 °C): 1 h, 2 h, 4 h, 6 h, 24 h, 28 h; pH 7 (40 °C): 3 h, 6 h, 24 h, 48 h, 54 h, 72 h; pH 7 (30 °C): 6 h, 24 h, 48 h, 72 h, 96 h; pH 9 (25 °C): 0.5 h, 1 h, 2.5 h, 7 h, 9 h; pH 9 (15 °C): 2 h, 4 h, 6 h, 24 h; pH 9 (5 °C): 4 h, 24 h, 28 h, 48 h, 52 h; pH 1.2 (37 °C): 0.25 h, 0.5 h. - Buffers:
- - pH: 1.2, 4, 7, 9
- Composition of buffer: pH 1.2 (hydrochloric acid 0.064 mol/dm³, potassium chloride 0.05 mol/dm³), pH 3 (potassium hydrogen phthalate 0.005 mol/dm³), pH 7 (disodium hydrogen orthophosphate anhydrous 0.003 mol/dm³, potassium dihydrogen orthophosphate 0.002 mol/dm³, sodium chloride 0.002 mol/dm³), pH 9 (disodium tetraborate 0.001 mol/dm³, sodium chloride 0.002 mol/dm³)
- Preparation of buffer solutions: The buffer solutions were filtered through a 0.2 µm membrane filter to ensure they were sterile before commencement of the test. Also these solutions were subjected to ultrasonication and degassing with nitrogen to minimise dissolved oxygen content. - Details on test conditions:
- TEST SYSTEM
- Type, material and volume of test flasks, other equipment used: stoppered glass flasks
- Sterilisation method: The buffer solutions were filtered through a 0.2 µm membrane filter.
- Lighting: shielded from light
- If no traps were used, is the test system closed/open: closed
- Is there any indication of the test material adsorbing to the walls of the test apparatus? no
TEST MEDIUM
- Preparation of test medium: Sample solutions were prepared at a nominal concentration of 2 x 10E-4 g/L in the three buffer solutions.
- Identity and concentration of co-solvent: 1% tetrahydrofuran
OTHER TEST CONDITIONS
- Adjustment of pH: no - Duration:
- 0.667 h
- pH:
- 4
- Temp.:
- 15 °C
- Initial conc. measured:
- 0 g/L
- Duration:
- 1.5 h
- pH:
- 4
- Temp.:
- 5 °C
- Initial conc. measured:
- 0 g/L
- Duration:
- 28 h
- pH:
- 7
- Temp.:
- 50 °C
- Initial conc. measured:
- 0 g/L
- Duration:
- 72 h
- pH:
- 7
- Temp.:
- 40 °C
- Initial conc. measured:
- 0 g/L
- Duration:
- 96 h
- pH:
- 7
- Temp.:
- 30 °C
- Initial conc. measured:
- 0 g/L
- Duration:
- 9 h
- pH:
- 9
- Temp.:
- 25 °C
- Initial conc. measured:
- 0 g/L
- Duration:
- 24 h
- pH:
- 9
- Initial conc. measured:
- 0 g/L
- Duration:
- 52 h
- pH:
- 9
- Initial conc. measured:
- 0 g/L
- Number of replicates:
- 2
- Positive controls:
- no
- Negative controls:
- no
- Preliminary study:
- The data from the preliminary test indicated a high extent of hydrolysis at 50 °C for pH 4, pH 7 and pH 9.
None of the test substance was detected at pH 4 in any samples. 0% recovery was detected at pH 7 after 120 h and no test substance could be detected after 2.4 h at pH 9. - Test performance:
- According to the test guidelines the rate of hydrolysis at 25 °C should be estimated from the rates at three different temperatures spaced at least 10 °C apart. In the case of the pH 4 testing this was not possible because at 25 °C, which would have been the choice for the third temperature, the rate of hydrolysis would have been to rapid to accurately quantify.
- Transformation products:
- not measured
- % Recovery:
- 0
- pH:
- 1.2
- Temp.:
- 37 °C
- Duration:
- 0.5 h
- % Recovery:
- 7.72 - 9.54
- pH:
- 4
- Temp.:
- 5 °C
- Duration:
- 1.5 h
- % Recovery:
- 4.82 - 5.13
- pH:
- 4
- Temp.:
- 15 °C
- Duration:
- 0.667 h
- % Recovery:
- 9.99 - 11.9
- pH:
- 7
- Temp.:
- 30 °C
- Duration:
- 96 h
- % Recovery:
- 6.71 - 9.81
- pH:
- 7
- Temp.:
- 40 °C
- Duration:
- 72 h
- % Recovery:
- 10.2 - 10.8
- pH:
- 7
- Temp.:
- 50 °C
- Duration:
- 28 h
- % Recovery:
- 16.3 - 16.9
- pH:
- 9
- Temp.:
- 5 °C
- Duration:
- 52 h
- % Recovery:
- 12.1 - 13.3
- pH:
- 9
- Temp.:
- 15 °C
- Duration:
- 24 h
- % Recovery:
- 22.9 - 25.4
- pH:
- 9
- Temp.:
- 25 °C
- Duration:
- 9 h
- pH:
- 4
- Temp.:
- 25 °C
- Hydrolysis rate constant:
- 0.003 s-1
- DT50:
- 0.063 h
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: calculated from Arrhenius plot
- pH:
- 7
- Temp.:
- 25 °C
- Hydrolysis rate constant:
- 0 s-1
- DT50:
- 45.5 h
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: calculated from Arrhenius plot
- pH:
- 9
- Temp.:
- 25 °C
- Hydrolysis rate constant:
- 0 s-1
- DT50:
- 4.46 h
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: calculated from Arrhenius plot
- Conclusions:
- DT50: < 0.155 h (pH1.2), 0.0628 h (pH4), 45.5 h (pH7), 4.46 h (pH9)
- Executive summary:
The hydrolytic properties of Y-15099 (CAS 220727-26-4) were investigated in a GLP study according to OECD 111. The %Recovery of the tests substance was determined at pH 1.2, 4, 7 and 9 at different temperatures ranging from 5 - 50 °C and after different test durations (0.5 - 96 h). Corresponding hydrolysis rate constants were calculated at 25 °C using Arrhenius plot. The half-life of the test substance was determined to be 0.0628 h at pH 4, 45.5 h at pH 7 and 4.46 h at pH 9. No test item was detected at pH 1.2 after 0.5 h. Thus, it was concluded that the half-life at pH1.2 is less then 0.155 h, the limit value determined for pH4 at 15 °C.
Reference
As no test item was detected in any of the samples for the test at pH 1.2, 37.0 °C including the initial samples, the result for this test has been reported less than the half life for the test at pH 4, 15 °C. This rest was chosen for the limit value as it had the shortest half life which was directly quantifiable by the procedure used.
Although the pH 9 test was performed directly at 25 °C, the result for pH 9 testing obtained from the Arrhenius data was reported. This was considered acceptable as there was good agreement with the results obtained from the Arrhenius data and the test performed directly at 25 °C.
Under physiologically relevant conditions of pH 1.2, 37 °C, the half life of the test item was determined to be less than 0.155 h.
Table 1: Hydrolysis rate constants and half life at different pH and temperature
pH |
Temperature [°C] |
Hydrolysis rate constant [h-1] |
Half life [h] |
Type |
4 |
15 |
4.47 |
0.155 |
(pseudo-)first order (= DT50) |
4 |
5 |
1.70 |
0.408 |
(pseudo-)first order (= DT50) |
7 |
50 |
0.0764 |
9.07 |
(pseudo-)first order (= DT50) |
7 |
40 |
0.0367 |
18.9 |
(pseudo-)first order (= DT50) |
7 |
30 |
0.0222 |
31.2 |
(pseudo-)first order (= DT50) |
9 |
25 |
0.148 |
4.70 |
(pseudo-)first order (= DT50) |
9 |
15 |
0.0853 |
8.13 |
(pseudo-)first order (= DT50) |
9 |
5 |
0.0347 |
20 |
(pseudo-)first order (= DT50) |
Description of key information
DT50: 0.628 h (pH 4), 45.5 h (pH 7), 4.46 h (pH 9)
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 45.5 h
- at the temperature of:
- 25 °C
Additional information
One GLP Guideline study according to OECD 111 investigating the hydrolytic properties of Y-15099 (CAS 220727-26-4) is available (Tarran and White, 2012). The %Recovery of the tests substance was determined at pH 1.2, 4, 7 and 9 at different temperatures ranging from 5 - 50 °C and after different test durations (0.5 - 96 h). Corresponding hydrolysis rate constants were calculated at 25 °C using Arrhenius plot. The half-life of the test substance was determined to be 0.0628 h at pH 4, 45.5 h at pH 7 and 4.46 h at pH 9. No test item was detected at pH 1.2 after 0.5 h. Thus, it was concluded that the half-life at pH1.2 is less then 0.155 h, the limit value determined for pH 4 at 15 °C.
The transformation products were not measured in this study. Based on the chemical structure the following three hydrolysis products of Y-15099 were identified: octanoic acid, silanetriol, (3-mercaptopropyl)- and ethanol.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.