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Physical & Chemical properties

Water solubility

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Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The result is sourced from secondary literature (MSDS). The original reference was not available for review and no further information is available.
Principles of method if other than guideline:
Information on method and guideline not stated
GLP compliance:
not specified
Water solubility:
34 vol%
Temp.:
25 °C
pH:
6 - 8
Remarks on result:
other: This value is the weight by weight percent as sold on the market.
Water solubility:
>= 430 g/L
Temp.:
25 °C
pH:
6 - 8
Remarks on result:
other: The source reports the substance as "soluble in water" This value has been derived by the reviewer and is equivalent to the above value in g/l. The temperature is not stated in the source but this has been assumed as ambient temperature.
Conclusions:
Interpretation of results: very soluble (> 10000 mg/L)
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The result is sourced from secondary literature. The original reference was not available for review and no further information is available.
Principles of method if other than guideline:
Information on method and guideline not stated
GLP compliance:
no
Water solubility:
15 000 mg/L
Remarks on result:
other: No information on pH and temperature stated
Conclusions:
Interpretation of results: very soluble (> 10000 mg/L)
The test substance is reported as very soluble in water in secondary literature. The original reference was not available for review and no further information is available. The reliability of this result is not assignable.
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The result is sourced from secondary literature (MSDS). The original reference was not available for review and no further information is available.
Principles of method if other than guideline:
Information on method and guideline not stated
GLP compliance:
not specified
Water solubility:
30 - 40 vol%
Temp.:
25 °C
pH:
ca. 7
Remarks on result:
other: This value is the weight by weight percent as sold on the market. An average value of 35% was used by the reviewer.
Water solubility:
>= 440 g/L
Temp.:
25 °C
pH:
ca. 7
Remarks on result:
other: The source reported the solubility of the substance as "miscible in all proportions". This value has been derived by the reviewer and is equivalent to the above value in g/l. The temperature is not stated in the source but this has been assumed
Conclusions:
Interpretation of results: very soluble (> 10000 mg/L)
The substance was reported as miscible in all proportions with water an pH ~7 (440 g/l). Full details are not available and the reliability is unassignable.
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The result is sourced from secondary literature (MSDS). The original reference was not available for review and no further information is available.
Principles of method if other than guideline:
Information on method and guideline not stated
Water solubility:
30 vol%
Temp.:
20 °C
pH:
5.8 - 6.3
Remarks on result:
other: This value is the weight by weight percent as sold on the market.
Water solubility:
>= 380 g/L
Temp.:
20 °C
pH:
5.8 - 6.3
Remarks on result:
other: The source reported the solubility of the substance as "fully miscible with water". This value has been derived by the reviewer and is equivalent to the above value in g/l.
Conclusions:
Interpretation of results: very soluble (> 10000 mg/L)
The substance was reported as fully miscible with water at a temperature of 20°C and pH of 5.8 - 6.3 (380 g/l). Full details are not available and the reliability is unassignable.

Description of key information

Water solubility: The substance is very soluble in water and has an average water solubility value of 410 g/l at ambient conditions as described in a secondary sources.

Key value for chemical safety assessment

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

Additional information

The substance HMDTMP (4 -7Na) (and its analogues) are known to be highly hydrophilic and extremely water-soluble. Although supplier's literature is much less detailed than laboratory study reports, given the range of values expected for these types of substance, the uncetainty is not significant in respect of environmental exposure or human health exposure modelling. Typical concentrations of aqueous solutions in commercial supply provides weight of evidence of high loadings. Water solubility in the range 380 - 440 g/l and 410 - 440 g/l were reported for the sodium and potassium salt of HMDTMP respectively. Therefore, a typical value of 410 g/l was determined for many commercial solutions.

Phosphonate salts are highly water soluble and are supplied as aqueous solutions. Free acids are less soluble than the salts; however, aqueous solutions in excess of l % active material can be prepared. The aqueous salts are miscible in water. A water solubility value of 15000 mg/l was reported for the parent acid in a secondary source to which no reliability could be assigned.