Phthalimide

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:

other: Acceptable, well documented study report which meets basic scientific principles

Principles of method if other than guideline:

sieving (150µm, 860µm, 1500µm)
analysis by electron microscope (SEM) and light microscope (LM)
Data evaluation sieve fraction < 150 µm is according to OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions); Methode B

GLP compliance:

no

Type of method:

sieving

Type of distribution:

counted distribution

Key result

Percentile:

D50

Mean:

2 000 µm

Remarks on result:

not measured/tested

Remarks:

Value of D50 not given in study report. It was deduced from the attached data.

No.:

#1

Size:

> 1 500 µm

Distribution:

68.5 %

No.:

#2

Size:

>= 860 - <= 1 500 µm

Distribution:

21.6 %

No.:

#3

Size:

>= 150 - <= 860 µm

Distribution:

9.1 %

No.:

#4

Size:

< 150 µm

Distribution:

0.8 %

Table 1. Result particle size distribution

Fraction	w/w %	Dmin [µm]	Dmax [µm]	Dmean [µm]
< 150 µm	0.8	9.1	225.1	80.2
150 -860 µm	9.1	109.8	947.2	364.1
860 - 1500 µm	21.6	768.1	3802.2	1554.6
> 1500	68.1	582.1	10171.2	2804.4

 

Result aspect ratio ( A= maximum length/ width)

 

Fraction	w/w %	Amin	max	Amean
< 150 µm	0.8	1.09	7.93	1.96
150 -860 µm	9.1	1.06	6.23	1.75
860 - 1500 µm	21.6	1.08	3.51	1.66
> 1500	68.1	1.03	3.76	1.58

 

Executive summary:

Karbach A, 2009

Particle size distribution was analysed after sieving (150, 860 and 1500 µm).

The fraction of the sample (> 1500 µm) with a mean diameter of 2804.4 µm was 68,1 % (w/w).

The fraction of the sample (860 µm - 1500 µm) with a mean diameter of 1554.6 µm was 21.6 % (w/w).

The fraction of the sample (150 µm - 860 µm) with a mean diameter of 364.1 µm was 9.1 % (w/w).

The fraction of the sample (> 150 µm) with a mean diameter of 80.2 µm was 0.8 %(w/w).

Description of key information

Particle size distribution was analysed after sieving (150, 860 and 1500 µm).

The fraction of the sample (> 1500 µm) with a mean diameter of 2804.4 µm was 68,1 % (w/w).

The fraction of the sample (860 µm - 1500 µm) with a mean diameter of 1554.6 µm was 21.6 % (w/w).

The fraction of the sample (150 µm - 860 µm) with a mean diameter of 364.1 µm was 9.1 % (w/w).

The fraction of the sample (> 150 µm) with a mean diameter of 80.2 µm was 0.8 %(w/w).

 

From available data, the value of D50 was determined at 2000 µm.