Sodium 1,4-dicyclohexyl sulphonatosuccinate

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:

2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Guideline compliant study with good documentation

Qualifier:

according to guideline

Guideline:

other: DIN 66165 April 1987

Principles of method if other than guideline:

A representative part of the test item is given to a sieve tower and classified by means of a hand or machine sieving. From the weighted sieve fractions the particle size distributions and the frequency scale are determined.

GLP compliance:

no

Type of method:

sieving

Type of distribution:

mass based distribution

Percentile:

D10

Mean:

781 µm

Remarks on result:

other: In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

Key result

Percentile:

D50

Mean:

> 1 400 µm

Remarks on result:

other: In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

Percentile:

D90

Mean:

> 1 400 µm

Remarks on result:

other: In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

 Table 1 Partile size distribution

Grain fraction	Percent by weight		Frequency density	Cumulative (%)
(µm)	(g)	(%)	q3         (%/µm)	Q3 (D)	1-Q3 (R)
< 63	0,70	0,6	0,010	0,6	99,4
63 – 125	1,35	1,2	0,019	1,8	98,2
125 – 250	2,08	1,8	0,015	3,6	96,4
250 – 500	3,48	3,1	0,012	6,7	93,3
500 – 1000	6,67	5,9	0,012	12,6	87,4
1000 – 1400	4,83	4,3	0,011	16,8	83,2
> 1400	94,53	83,2	0,006	100,0	0,0

 

X₁₀:     781 µm

X₅₀: > 1400 µm

X₉₀: > 1400 µm

                    

In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

Conclusions:

The mean particle size (D50) is > 1400 µm. The D10 is 781 µm. In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

Executive summary:

In the Klimisch 1 study from Bütfering (2012) the particle size distribution of Sodium dicyclohexyl sulfosuccinate was determined according to DIN 66165.A representative part of the test item was given to a sieve tower and classified by means of a hand or machine sieving. From the weighted sieve fractions the particle size distributions and the frequency scale were determined. The mean particle size (D50) is > 1400 µm. The D10 is 781 µm. In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

The results of this study are considered reliable and relevant for the risk assessment.

Description of key information

mean particle size (D50): > 1400 µm

Additional information

In the Klimisch 1 study from Bütfering (2012) the particle size distribution of Sodium dicyclohexyl sulfosuccinate was determined according to DIN 66165.A representative part of the test item was given to a sieve tower and classified by means of a hand or machine sieving. From the weighted sieve fractions the particle size distributions and the frequency scale were determined. The mean particle size (D50) is > 1400 µm. The D10 is 781 µm. In the gain fraction > 1400 µm are particle up to a size of 7.5 cm x 2.5 cm.

The results of this study are considered reliable and relevant for the risk assessment.