Aluminium potassium bis(sulphate)

Particle size distribution (Granulometry)

Description of key information

With regard to inhalation potential, ca. 0,96 % can be inhaled (< 100 micrometer). The alveoli relevant thoracic fraction part < 0,01 mm of the particle distribution is < 0.06 % of total mass of the substance and therefore not relevant.
The mass median diameter is 0.58 mm.
D10 is 0.23 mm, D50 is 0.49 mm, D90 is 0.87 mm. 
The geometric standard deviation for D10 and D90 is 1.96 and 1.93.
PercentileMeanSt. dev.
D10ca. 0.23  mm1.96
D50ca. 0.45  mm
D90ca. 0.87  mm1.93

Additional information

Particle size distribution:

mm	%
> 2.0	0.0
1.6 – 2.0	0.04
1.4 – 1.6	0.2
1.25 – 1.4	1.1
1.0 – 1.25	8.0
0.9 – 1.0	6.0
0.8 – 0.9	11.5
0.71 – 0.8	3.6
0.63 – 0.71	7.5
0.5 – 0.63	17.9
0.4 – 0.5	14.8
0.315 – 0.4	12.8
0.2 – 0.315	10.3
0.1 – 0.2	5.3
0.04 – 0.1	0.9
< 0.04	0.06
Total	100.00
Average of 3 production lots