Registration Dossier

Physical & Chemical properties

pH

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Administrative data

Endpoint:
pH
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2010
Report Date:
2010

Materials and methods

Principles of method if other than guideline:
pH-measurements (10g/l) taken in the laboratory for solutions of pure, crystalline ATMP with increasing stoichometric amounts of the corresponding base (NaOH).
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: crystalline

Results and discussion

pH valueopen allclose all
pH value:
2
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-1Na
pH value:
4.2
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-2Na
pH value:
5.4
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-3Na
pH value:
6.8
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-4Na
pH value:
10.9
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-5Na
pH value:
12
Concentration:
10 g/L
Remarks on result:
other: Stoichiometric loading of base equivalent to ATMP-6Na

Applicant's summary and conclusion

Conclusions:
Company data are available for pH of stoichiometric solutions of salts. Of particular interest is the finding that a solution equivalent to ATMP-2Na has a pH of 4.2.