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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
relative density
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data

Data source

Reference
Reference Type:
review article or handbook
Title:
Handbook of Mineralogy IV (Arsenates, Phosphates, Vanadates), "Hydroxylapatite"
Author:
Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C
Year:
2000
Bibliographic source:
Mineralogical Society of America. ISBN 0962209732.

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
not available
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Hydroxylapatite (Ca5(OH)(PO4)3)
EC Number:
215-145-7
EC Name:
Hydroxylapatite (Ca5(OH)(PO4)3)
Cas Number:
1306-06-5
Molecular formula:
Ca5HO13P3
IUPAC Name:
pentacalcium hydroxide triphosphate
Test material form:
solid: particulate/powder

Results and discussion

Densityopen allclose all
Key result
Type:
density
Remarks:
(calculated value)
Density:
3.16 g/cm³
Temp.:
20 °C
Type:
relative density
Remarks:
(measured values)
Density:
>= 3.14 - <= 3.21 g/cm³
Temp.:
20 °C

Any other information on results incl. tables

A density of 3.16 is calculated. This value is in the middle of two measured determinations between 3.14. and 3.21

Applicant's summary and conclusion

Conclusions:
The density of the test item Sulfuric acid, reaction product with alumina was calculated as 2.6214 ± 0.0019 g/cm3 at 20.0 ± 0.4 °C, which is the mean of two values.