Biphenyl-2-ol

Particle size distribution (Granulometry)

Link to relevant study record(s)

Reference

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

31 Jul 2008 to 03 Nov 2008

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 110 (Particle Size Distribution / Fibre Length and Diameter Distributions)

GLP compliance:

yes

Remarks:

Ministerium für Umwelt und Naturschutz, Landwirtschaft und Verbraucherschutz des Landes Nordrhein-Westfalen.

Type of method:

Laser scattering/diffraction

Type of distribution:

mass based distribution

Percentile:

D10

Mean:

630.4 µm

Remarks on result:

other: No St. dev. reported.

Percentile:

D25

Mean:

1 094 µm

Remarks on result:

other: No St. dev. reported.

Percentile:

D50

Mean:

1 434 µm

Remarks on result:

other: No St. dev. reported.

Percentile:

D75

Mean:

1 698 µm

Remarks on result:

other: No St. dev. reported.

Percentile:

D90

Mean:

1 871 µm

Remarks on result:

other: No St. dev. reported.

No.:

#1

Size:

> 2 000 µm

Distribution:

82.1 %

No.:

#2

Size:

< 2 000 µm

Distribution:

17.9 %

No.:

#3

Size:

> 100 - < 2 000 µm

Distribution:

17.73 %

No.:

#4

Size:

< 100 µm

Distribution:

0.17 %

No.:

#5

Size:

< 10 µm

Distribution:

0.04 %

No.:

#6

Size:

< 1 µm

Distribution:

0.02 %

An oversaturated solution of the substance was prepared in order to overcome the relative solubility of the test substance. This was done by adding 1.1g of test substance per 1 ml of water, therefore ensuring that the solution became oversaturated and the resultant test medium was a dispersion of the test substance in water.

Particle size measurements are reported over the range of 0.04 – 2000 µm, using a mixture of sieving and laser diffraction methods.

The oversize part of the sample (> 2000 μm) of 82.1 % was separated by sieving before determining the particle size distribution by laser diffraction.

Range: 0.0400 μm to 2000 μm

Mean value: 1341 μm

Median value: 1434 μm

Max. value: 1739 μm

Specific surface: 452.8 cm2/g

 

d(0.1): 630.4 μm

d(0.25): 1094 μm

d(0.5): 1434 μm

d(0.75): 1698 μm

d(0.9): 1871 μm

 

sum of mass < 1 μm = 0.12 % under consideration of the oversize part = 0.02 %

sum of mass < 10μm = 0.24 % under consideration of the oversize part = 0.04 %

sum of mass < 100μm = 0.95 % under consideration of the oversize part = 0.17 %

Tabulation of the measured values

 

μm	sum of mass %	μm	sum of mass %	μm	sum of mass %	μm	sum of mass %	μm	sum of mass %
0.042	0	0.128	0.027	0.393	0.090	1.204	0.12	3.687	0.16
0.046	0.000065	0.141	0.032	0.431	0.094	1.321	0.12	4.047	0.16
0.050	0.00023	0.155	0.037	0.474	0.098	1.451	0.13	4.443	0.17
0.055	0.00073	0.170	0.042	0.520	0.10	1.592	0.13	4.877	0.18
0.061	0.0017	0.186	0.048	0.571	0.10	1.748	0.13	5.354	0.19
0.067	0.0033	0.205	0.053	0.627	0.11	1.919	0.13	5.878	0.19
0.073	0.0053	0.225	0.059	0.688	0.11	2.107	0.14	6.452	0.20
0.080	0.0077	0.247	0.064	0.755	0.11	2.313	0.14	7.083	0.21
0.088	0.011	0.271	0.070	0.829	0.11	2.539	0.14	7.775	0.22
0.097	0.014	0.297	0.075	0.910	0.12	2.787	0.15	8.536	0.23
0.106	0.018	0.326	0.080	0.999	0.12	3.059	0.15	9.370	0.24
0.117	0.022	0.358	0.085	1.097	0.12	3.358	0.15	10.29	0.24

 

μm	sum of mass %	μm	sum of mass %	μm	sum of mass %	μm	sum of mass %	μm	sum of mass %
11.29	0.25	34.58	0.43	105.9	1.01	324.4	4.04	993.6	18.2
12.40	0.26	37.97	0.46	116.3	1.11	356.1	4.59	1091	22.2
13.61	0.27	41.68	0.49	127.6	1.23	390.9	5.22	1197	27.6
14.94	0.28	45.75	0.52	140.1	1.37	429.2	5.87	1314	35.1
16.40	0.29	50.22	0.55	153.8	1.54	471.1	6.60	1443	44.9
18.00	0.30	55.13	0.59	168.9	1.75	517.2	7.43	1584	57.1
19.76	0.31	60.52	0.64	185.4	1.98	567.7	8.35	1739	71.5
21.69	0.33	66.44	0.68	203.5	2.25	623.3	9.34	1909	86.2
23.81	0.34	72.94	0.73	223.4	2.54	684.2	10.4	2000	100
26.14	0.36	80.07	0.79	245.2	2.86	751.1	11.7	--	--
28.70	0.38	87.90	0.85	269.2	3.20	824.5	13.2	--	--
31.50	0.40	96.49	0.92	295.5	3.58	905.1	15.3	--	--

 

Description of key information

> 2000 µm = 82.1%
< 2000 μm = 17.9%
< 2000 µm to > 100 µm = 17.73%
< 100 μm = 0.17 %
< 10 μm = 0.04 %
< 1 μm = 0.02 %

Additional information

An oversaturated solution of the substance was prepared in order to overcome the relative solubility of the test substance. This was done by adding 1.1g of test substance per 1 mL of water, therefore ensuring that the solution became oversaturated and the resultant test medium was a dispersion of the test substance in water.

Particle size measurements were reported over the range of 0.04 – 2000 µm, using a mixture of sieving and laser diffraction methods.

By sum of mass, 82.1% of particles were > 2000 µm in size, 17.9 % were < 2000 µm, 17.73% were > 100 µm and < 2000 µm, 0.17 % were < 100 µm, 0.04 % were < 10 µm and 0.02 % were < 1 µm. The results for particles of < 2000 µm in size were determined during tests corresponding to CIPAC MT 187 and to the OECD guideline for testing of chemicals No: 110.