Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
other: handbook
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
Handbook data are considered from a trusted source. Physical data are cited as found in the literature. When several alternative data values appear in the literature, the data is evaluated and representative selections are made.

Data source

Reference
Reference Type:
review article or handbook
Title:
Monograph number 577
Author:
Budavari, S. (ed.)
Year:
2000
Bibliographic source:
The Merck Index on CD-Rom 12th edition (12:3), Copyright 1999 by Merck & Co., Whitehouse Station NJ, USA

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Method followed unknown; data from handbook.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Ammonium dihydrogenorthophosphate
EC Number:
231-764-5
EC Name:
Ammonium dihydrogenorthophosphate
Cas Number:
7722-76-1
Molecular formula:
H3N.H3O4P
IUPAC Name:
ammonium dihydrogen phosphate
Constituent 2
Reference substance name:
Ammonium Phosphate, Monobasic
IUPAC Name:
Ammonium Phosphate, Monobasic
Test material form:
solid: crystalline
Details on test material:
Mf: H6NO4P
Mw: 115.03
purity: not mentioned.

Results and discussion

pH value
Key result
pH value:
4.2
Concentration:
0.2 other: M aqeous solution
Remarks on result:
other: No temperature mentioned in the handbook

Applicant's summary and conclusion

Conclusions:
Mono-ammonium phosphate: pH of a 0.2 M aq. solution : 4.2