Registration Dossier
Registration Dossier
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EC number: 232-137-9 | CAS number: 7788-97-8
Water solubility
Administrative data
Link to relevant study record(s)
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- In-house laboraotry work including impact of pH
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- GLP compliance:
- no
- Type of method:
- other: Observations
- Specific details on test material used for the study:
- Batch number of test material: B-08-3321
Technical grade material is in hydrated form - Key result
- Water solubility:
- ca. 28 g/L
- Conc. based on:
- element
- Remarks:
- Chromium
- Temp.:
- 20 °C
- pH:
- ca. 3
- Water solubility:
- ca. 100 g/L
- Conc. based on:
- test mat.
- Temp.:
- 20 °C
- pH:
- ca. 3
- Key result
- Water solubility:
- ca. 50 g/L
- Conc. based on:
- other: Anhydrous CrF3
- Temp.:
- 20 °C
- pH:
- ca. 3
- Conclusions:
- The solubility is very pH dependant with precipitation at neutral or alkaline pH resulting in very low water solubility expected under environmental conditions.
The substance supplied is acidic.
Reference
Solubility between pH 1 to > pH 10
pH |
CrF3·4H2O |
Cr soluble (mg/L) |
pH 1.5 |
Fully Soluble |
27993 |
pH 2.0 |
Fully Soluble |
27986 |
pH 3.0 |
Fully Soluble |
27989 |
pH 4.0 |
Soluble |
27890 |
pH 5 |
soluble |
23562 |
pH 6 |
soluble |
18971 |
pH 7 |
soluble |
17637 |
pH 8 |
soluble |
9641 |
pH 9 |
Insoluble |
<0.1 |
Description of key information
Key value for chemical safety assessment
- Water solubility:
- 100 g/L
- at the temperature of:
- 20 °C
Additional information
The substance is soluble until pH 4, then it becomes sparingly soluble and at a pH >9 is insoluble.
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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