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EC number: 911-302-5 | CAS number: -
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
This study follows the indications given in the DECD Guideline for the Testing of Chemicals n° 110, adopted on May 12, 1981 and in the EuropeanCommission's Guidance Document on the Determination of particle Size Distribution, Fibre length and Diameter Distribution of Chemical Substances, EUR 20268 EN, 2002.
Additional information
The sieve analysis of the test item shows that only 2 - 3 % of the particles are smaller than 125 µm. This fraction was used to perform particle size distribution analysis using laser diffraction. The fractions 125·250 µm, 250·500 µm, 500 -1000 µm and > 1000 µm showed aportion of about 20 - 30 % each.
Result of the laser diffraction:
D10: 17.958 µm (standard deviation: 1.06)
D50: 52.112 µm (standard deviation: 3.03)
D90: 116.354 µm (standard deviation: 5.71)
The addition of SDS for laser diffraction measurement shows that the test item is a laboratory sample specifically made to evaluate the toxicological profile of the substance. Its particle size distribution does not reflect the one of the commercial product, because of the strong agglomeration of this substances. The laboratory sample was treated with SDS during laser diffraction to prevent the agglomeration.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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