N-butylphosphorothioic triamide

Particle size distribution (Granulometry)

Description of key information

The result shows that the proportion of the test material having inhalable particle size (< 100 µm) is 0.199% indicating that the test material is essentially non-inhalable.

Additional information

The method used is designed to comply with that given in 'Particle Size Distribution, Fibre Length and Diameter Distribution', June 1996 European Commission technical guidance document.

Procedure:

Screening test (sieve method):

Test material (20.10 g) was sieved for approximately 10 minutes with the aid of a sieve brush through a 100 µm sieve. The mass of test material passing through the sieve was measured.

Results:

Screening test (sieve method)

The results of the sieving procedure are shown in the following table:

Sieve Aperture Size (µm)	100
Mass of test material transferred to sieve (g)	20.10
Mass of test material passed through sieve (g)	0.04
Test material less than sieve aperture size (%)	0.199 %

Conclusion:

Particle size data acquired for the test material is shown in the following Table:

Measurement	Method	Result
Proportion of test material having an inhalable particle size less than 100 µm	Sieve	0.199 %

The result indicates that the test material is essentially non-inhalable.