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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
07/2008
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2008
Report date:
2008

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)
Deviations:
no
GLP compliance:
no
Type of method:
microscopic examination
Type of particle tested:
agglomerate
Type of distribution:
counted distribution

Test material

Constituent 1
Chemical structure
Reference substance name:
1,3-dihydroxyacetone
EC Number:
202-494-5
EC Name:
1,3-dihydroxyacetone
Cas Number:
96-26-4
Molecular formula:
C3H6O3
IUPAC Name:
1,3-dihydroxyacetone
Details on test material:
DHA

Results and discussion

Particle sizeopen allclose all
Percentile:
D50
Mean:
> 2 - < 5 µm
Remarks on result:
not measured/tested
Remarks:
SD was not measured
Percentile:
other: Mean Size length
Mean:
7 µm
St. dev.:
5.9
Percentile:
other: Mean size diameter
Mean:
4 µm
St. dev.:
3.6
Particle size distribution at different passages
Remarks on result:
not determinable because of methodological limitations

Applicant's summary and conclusion

Conclusions:
The majority of particles have a diameter between 2 µm and 5 µm, at a length between 2,5 µm and 10 µm.
Executive summary:

The particle size distribution of DHA was investigated in an OECD guideline 110 compliant study.

No diameters < 1.3 µm were measured. The majority of particles have a diameter between 2 and 5 µm. The majority of particles have a length between 2.5 µm and 10 µm. No length 2.5 µm were measured.