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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: According to ISO 13320-1. Laser diffraction is the well experienced standard procedure for solids to determine particle size distribution.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: ISO 13320-1
Principles of method if other than guideline:
Laser diffraction particle sizing.
Type of distribution:
volumetric distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
4-nitrobenzoic acid
EC Number:
200-526-2
EC Name:
4-nitrobenzoic acid
Cas Number:
62-23-7
Molecular formula:
C7H5NO4
IUPAC Name:
4-nitrobenzoic acid

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
ca. 29.2 µm
Remarks on result:
other: Migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.
Percentile:
D50
Mean:
29.186 µm
St. dev.:
0.4

Any other information on results incl. tables

Concentration: 0,0010 % Vol

d(0.5): 29.186 µm (Median)

Given standard deviation is based on the general experience with the method. The estimated value is a typical standard deviation (13 % of D50).

Applicant's summary and conclusion