Chromium tris(dihydrogen phosphate)

Particle size distribution (Granulometry)

Link to relevant study record(s)

Reference

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:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Justification for type of information:

Material was dried and sieved to provide an indication of dustiness.
The substance is not normally isolated from water and the dry powder is not normally handled in industrial settings.

Qualifier:

no guideline followed

Principles of method if other than guideline:

The dried substance milled, a quantity of 30 g was used for particle size measurement with sieves at 250 and 63 µm

GLP compliance:

no

Type of method:

sieving

Type of particle tested:

primary particle

Type of distribution:

mass based distribution

Specific details on test material used for the study:

Batch number of test material: B-05-3234.
Dried

Mass median aerodynamic diameter:

µm

Remarks on result:

not measured/tested

Key result

Percentile:

D50

Mean:

ca. 250 µm

Remarks on result:

other: Standard deviation not measred

Key result

Percentile:

D90

Mean:

> 63 µm

Remarks on result:

other: Standard deviation not measred

No.:

#1

Size:

> 63 µm

Remarks on result:

other: Seiving method

Remarks:

insignificant quantity < 63µm

Retained by 250 µm =  56.1%;

Retained by 63 µm   =  40.43%;

< 63 µm   =  3.47%

Conclusions:

Only a small fraction of the dried and milled substance had a particle size < 63 µm
Low dust content.

Description of key information

Only a small fraction of the dried and milled substance had a particle size < 63 µm

Low dust content.