Registration Dossier

Physical & Chemical properties

Water solubility

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature
Principles of method if other than guideline:

No details are available on the guideline used to determine this result.
GLP compliance:
not specified
Key result
Water solubility:
>= 520 other: g/kg
Temp.:
25 °C
Remarks on result:
other: the source reports the solubility as "completely miscible"
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Key result
Water solubility:
ca. 700 other: g/kg
Remarks on result:
other: Temperature and pH not stated

Phosphonate salts are highly water soluble and some are formulated as aqueous. Solutions containing up to 70 % active material. Free acids are less soluble than the salts; however, aqueous solutions in excess of l % active material can be prepared.

An infinite water solubility value was reported in the handbook which represents the water solubility is greater than >1 *10E+6 (the substance is miscible in water).

Conclusions:
The test substance is reported as miscible in water in a handbook which has been subject to peer-review and in which the original data sources are traceable. The result is considered to be reliable.

Description of key information

Water solubility: Sodium salts of DTPMP are very soluble in water and have water solubility values of ≥500 g/l at ambient conditions (estimated based on data for the parent DTPMP acid)

Key value for chemical safety assessment

Water solubility:
500 g/L
at the temperature of:
25 °C

Additional information

The test substance was reported as miscible in water in a handbook (Gledhill 1992) which has been subject to peer-review and in which the original data sources are traceable. The result is considered to be reliable. Many commercial solutions at approx. 500 g/L are reported in company literature.

The original references were not available for review and no further information is available. The reliability of those results is not assignable.

Phosphonate salts are highly hydrophilic and extremely water soluble. Free acids are less soluble than the salts; however, aqueous solutions in excess of 1% active acid material can be prepared.