Registration Dossier
Registration Dossier
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EC number: 202-795-1 | CAS number: 99-86-5
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:
- May - September 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- 1995
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- column elution method
- Specific details on test material used for the study:
- Batch number: 83100001
Purity: 91.1%
Physical state/appearance: Clear colourless liquid
Expiry date: 11 May 2018
Storage conditions: Room temperature (nominally 15 to 25°C), dark - Key result
- Water solubility:
- 9.1 mg/L
- Conc. based on:
- test mat.
- Temp.:
- 20 °C
- pH:
- > 6.8 - < 6.9
- Details on results:
- The detector calibration was found to be linear over the range 0 to 20 mg/L with a regression coefficient of 1.0000. There was a measured solubility of 9.1 ± 1.2 mg/L. An acceptable mean recovery of approximately 95% of alpha-terpinene from fortified samples was achieved.
- Conclusions:
- The water solubility of alpha-Terpinene was determined to be 9.1 mg/L at 20°C.
- Executive summary:
The water solubility of alpha-terpinene was determined using HPLC and OECD TG 105. An acceptable mean recovery of approximately 95% of alpha-terpinene from fortified samples was achieved. The water solubility of alpha-Terpinene was determined to be 9.1 mg/L at 20°C.
Reference
Table 1. Summary of results.
Sample Number |
Time (hours) | Concentration (mg/L) | Mean Concentration (mg/L) |
pH |
| 2A, 2B | 2 | 8.38, 7.79 | 8.08 | 6.9, 6.8 |
| 4A, 4B | 4 | 10.51, 8.55 | 9.53 | 6.9, 6.9 |
| 6A, 6B | 6 | 8.86, 10.77 | 9.82 | 6.9, 6.8 |
Description of key information
Key study: Test method according to OECD TG 105. The water solubility of alpha-Terpinene was determined to be 9.1 mg/L at 20°C.
Key value for chemical safety assessment
- Water solubility:
- 9.1 mg/L
- at the temperature of:
- 20 °C
Additional information
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