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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Particle size distribution (Granulometry)

Administrative data

Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Comparable to guideline study with acceptable restrictions

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
1993
Report date:
1993

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Microtrac full range particle analyzer (light scattering)
GLP compliance:
no
Type of method:
other: Light scattering
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
482-400-9
EC Name:
-
Cas Number:
138776-88-2
Molecular formula:
C52H56O6P2
IUPAC Name:
9-[(3,3',5,5'-tetra-tert-butyl-2'-{8,10-dioxa-9-phosphatricyclo[9.4.0.0²,⁷]pentadeca-1(11),2(7),3,5,12,14-hexaen-9-yloxy}-[1,1'-biphenyl]-2-yl)oxy]-8,10-dioxa-9-phosphatricyclo[9.4.0.0²,⁷]pentadeca-1(11),2,4,6,12,14-hexaene

Results and discussion

Particle size
Percentile:
D50
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.

Any other information on results incl. tables

Particle Size Distribution:
Specific surface area: CS=0.36 m2/cc
Mean Dia.=25.81 microns


Cumulative "Smaller than" Percentiles:
%90: 49.13 microns
%50: 21.23 microns
%10: 8.46 microns
-------------------------------------------------------------
Mass Median Diameter:
Mean particle diameter: 26 microns

Applicant's summary and conclusion

Executive summary:

The test was carried out on 1 sample using the Microtrac full range analyser.

Measured against a standard (phosphite).

Particle size distribution (mean): 25.81 microns.