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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Justification for type of information:
data from handbook or collection of data

Data source

Reference
Reference Type:
publication
Title:
PHYSICO-CHEMICAL PROPERTIES AND TOXICITIES OF DIFFERENT IRON PREPARATIONS
Author:
J. A. NISSIM
Year:
1953
Bibliographic source:
Brit. J. Pharmacol. (1953), 8, 197.

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: as mentioned below
Principles of method if other than guideline:
The pH of Ferric hypophosphite is determined.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Iron tris(phosphinate)
EC Number:
232-030-7
EC Name:
Iron tris(phosphinate)
Cas Number:
7783-84-8
Molecular formula:
FeO6P3
IUPAC Name:
iron(3+) triphosphinate
Test material form:
solid: particulate/powder
Details on test material:
- Name of test material: Ferric hypophosphite
- IUPAC name: iron(3+) ion triphosphinate
- Molecular formula: FeO6P3
- Molecular weight: 250.8084 g/mole
- Smiles : [Fe+3].[O-]P=O.[O-]P=O.[O-]P=O
- Inchl: 1S/Fe.3H3O2P/c;3*1-3-2/h;3*3H2,(H,1,2)/q+3;;;/p-3
- Substance type: Inorganic
- Physical state: Solid powder (white to grey)
Specific details on test material used for the study:
- Name of test material: Ferric hypophosphite
- IUPAC name: iron(3+) ion triphosphinate
- Molecular formula: FeO6P3
- Molecular weight: 250.8084 g/mole
- Smiles : [Fe+3].[O-]P=O.[O-]P=O.[O-]P=O
- Inchl: 1S/Fe.3H3O2P/c;3*1-3-2/h;3*3H2,(H,1,2)/q+3;;;/p-3
- Substance type: Inorganic
- Physical state: Solid powder (white to grey)

Reagents

Reagent:
water

Results and discussion

pH value
Key result
pH value:
3.7
Remarks on result:
other: Acidic in nature

Applicant's summary and conclusion

Conclusions:
The pH of Ferric hypophosphite is determined to be 3.7.
Executive summary:

Based on available data from reliable publication, the pH of Ferric hypophosphite is determined to be 3.7.

Hence the given substance Ferric hypophosphite is acidic in nature.