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EC number: 231-210-2 | CAS number: 7447-39-4
Particle size distribution (Granulometry)
Administrative data
Link to relevant study record(s)
Description of key information
Particle size distribution analysis was undertaken on samples of two forms of copper (II) chloride (anhydrous and hydrated). Laser diffraction data for the Lead Registrant's copper (II) chloride anhydrous show the following volume-rated particle size distribution: D(v,0.1) 9.71 µm; D (v,0.5) 23.63 µm; D(v,0.9) 271.67 µm. The corresponding number-based distribution is as follows: D(n,0.1) 1.46 µm; D (n,0.5) 2.05 µm; D(n,0.9) 9.90 µm. Laser diffraction data for the Lead Registrant's hydrated copper (II) chloride show the following volume-rated particle size distribution: D(v,0.1) 52.60 µm; D (v,0.5) 153.33 µm; D(v,0.9) 446.33 µm. The corresponding number-based distribution is as follows: D(n,0.1) 2.89 µm; D (n,0.5) 3.69 µm; D(n,0.9) 8.16 µm. Based on the results from the number distributions, the hydrated and anhydrous forms of copper (II) chloride are not considered to fall under the EC’s recommended definition of nanomaterial (50% < 100 nm based on particle number). Joint registrants that produce or import copper (II) chloride (anhydrous or hydrated) corresponding to these specifications are able to refer to the Lead Registrant's granulometry data for the purpose of REACH registration.
Additional information
The Lead Registrant produces copper (II) chloride anhydrous with the following volume-rated particle size distribution: D(v, 0.1) 9.71, D(v,0.5) 23.63 and D(v,0.9) 271.67. Values for the number-rated distribution were determined to be D(n,0.1) 1.46, D(n,0.5) 2.05 and D(n,0.9) 9.90.
The Lead Registrant also produces hydrated copper (II) chloride with the following volume-rated particle size distribution: D(v, 0.1) 52.60, D(v,0.5) 153.33 and D(v,0.9) 446.33. Values for the number-rated distribution were determined to be D(n,0.1) 2.89, D(n,0.5) 3.69 and D(n,0.9) 8.16.
Based on the results from the number distributions, the two forms of copper (II) chloride (anhydrous and hydrated) are not considered to fall under the EC’s recommended definition of nanomaterial (50% < 100 nm based on particle number).
Joint registrants that produce or import copper (II) chloride (anhydrous or hydrated) corresponding to these specifications are able to refer to the Lead Registrant's granulometry data for the purpose of REACH registration.
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