Copper thiocyanate

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study carried out in accordance with an internationally accepted standard guideline without significant deviation. GLP is not required for studies of this type.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

other: ISO 13320:2009 Particle size analysis - Laser Diffraction Methods

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: IOM internal method: SOP-017: "Particle Size Distribution Analysis by Laser Diffraction"

GLP compliance:

no

Type of method:

Laser scattering/diffraction

Type of distribution:

other: Both volume-based (standard reporting of particle size distribution data) and number-based (pertinent to the nanomaterial definition) particle size distributions have been analysed.

Test material

Test material information

Constituent 1

Reference substance name:

Copper thiocyanate

EC Number:

214-183-1

EC Name:

Copper thiocyanate

Cas Number:

1111-67-7

Molecular formula:

CHNS.Cu

IUPAC Name:

copper thiocyanate

Test material form:

solid: particulate/powder

Results and discussion

Particle size

Particle size 1

Percentile:

D50

Mean:

8.65 µm

Remarks on result:

other: Taken from volume-based distribution.

Particle size 2

Percentile:

D50

Mean:

0.668 µm

Remarks on result:

other: Taken from number-based distribution.

Any other information on results incl. tables

SUMMARY OF RESULTS

Copper (I) Thiocyanate: Particle Size Distribution Analysis

Notation	Copper (I) Thiocyanate
	Volume
D [4,3] - µm	9.22
D (v,0.1) - µm	2.38
D (v,0.5) - µm	8.65
D (v,0.9) - µm	16.43
Vol % <100 nm	0
	Number
D (n,0.1) - µm	0.453
D (n,0.5) - µm	0.668
D (n,0.9) - µm	1.300
No.% <100 nm	0

Figure 1: Number- and Volume-Rated Particle Size Distributions, Copper (I) thiocyanate

[To see figure, refer to diagram in section "illustration (picture/graph)".

Volume Rated Particle Size Distribution

The volume distributions are seen to be very reproducible and bi-modal with maxima observed at approximately 9 and 70 µm.

Particle concentration (by volume) is seen to decrease after 9 µm, with no particles detected below 2 µm.

Number Rated Particle Size Distribution

The number distributions are also seen to be reproducible, and mono-modal with a maximum observed at approximately 4 µm. Particle concentration (by number) is seen to decrease sharply after 3 µm, with no particles detected below 1 µm. Based on the results from the number distribution, the material is not considered to fall under the EC’s recommended definition of nanomaterial (50% < 100 nm based on particle number).

DETAILED RESULTS

Aluminium Oxide Reference

	Volume Distribution					Number Distribution
Run	D[4,3]	D(v,0.1)	D(v,0.5)	D(v,0.9)	% <100nm	D(n,0.1)	D(n,0.5)	D(n,0.9)	% <100nm
1	8.00	1.21	4.62	20.9	0	0.501	0.783	1.58	0
2	8.19	1.22	4.52	20.7	0	0.50	0.795	1.61	0
3	9.44	1.24	4.85	22.7	0	0.50	0.794	1.61	0
Avg	8.54	1.22	4.66	21.43	0	0.500	0.791	1.60	0
Std Dev	-	0.01	0.14	0.90	-	0.00	0.01	0.01	-
COV	-	1.01	2.986	4.20	-	0.09	0.69	0.88	-
Check	-	<5	<3	<5	-	<5	<3	<5	-

The repeatability of the reference analysis was seen to be in accordance with the COV limits described in ISO13320.

Copper (I) Thiocyanate

Particle Size Distribution Analysis

	Volume Distribution					Number Distribution
Run	D[4,3]	D(v,0.1)	D(v,0.5)	D(v,0.9)	% < 100 nm	D(n,0.1)	D(n,0.5)	D(n,0.9)	% < 100 nm
1	8.87	4.31	8.05	14.6	0	2.76	4.29	7.64	0
2	9.95	4.42	8.28	15.5	0	2.80	4.38	7.81	0
3	8.96	4.34	8.10	14.9	0	2.81	4.33	7.69	0
Avg	9.26	4.36	8.14	15.0	0	2.79	4.33	7.71	0
Std Dev	0.49	0.05	0.10	0.37	-	0.02	0.04	0.07	-
COV	5.28	1.07	1.21	2.49	-	0.77	0.85	0.92	-
Check	-	<5	<3	<5	-	<5	<3	<5	-

The repeatability of the sample analysis was seen to be in accordance with the COV limits described in ISO13320.

Applicant's summary and conclusion

Conclusions:

The volume-rated distribution of copper (I) thiocyanate was as follows: D(4,3) 9.22 µm; D(v,0.1) 2.38 µm; D(v,0.5) 8.65 µm; D(v,0.9) 16.43 µm. Volume % <100 nm was 0. The number-rated distribution of copper (I) thiocyanate was as follows: D(n,0.1) 0.453 µm; D(n,0.5) 0.668 µm; D(n,0.9) 1.300 µm. Number % <100 nm was 0.

Executive summary:

The volume-rated and number-rated particle size distributions for copper (I) thiocyanate were determined by laser diffraction using a Malvern MS3000 laser diffraction system in accordance with ISO 13320:2009.

The volume-rated distribution was as follows: D(4,3) 9.22 µm; D(v,0.1) 2.38 µm; D(v,0.5) 8.65 µm; D(v,0.9) 16.43 µm. Volume % <100 nm was 0. The number-rated distribution was as follows: D(n,0.1) 0.453 µm; D(n,0.5) 0.668 µm; D(n,0.9) 1.300 µm. Number % <100 nm was 0.