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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Justification for type of information:
Testing for CAS 55184-72-0 is covered by tests with CAS 848588-96-5. Both substances are very similar since they differ mainly in the share of C13 (CAS 848588-96-5 C13> 80%; CAS 55184-72-0 > 95%). Hence, read across from CAS 848588-96-5 (source) to CAS 55184-72-0 (target) is considered as appropriate for both substances.
Reason / purpose:
read-across source
GLP compliance:
no
Percentile:
D50
Mean:
>= 30 - <= 40 mm
Remarks on result:
other: optical characterization(migrated from fields under 'Mass median diameter' as D50 percentile. No source field for Standard deviation.)

Due to the pasty product properties of the test item Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate the particle size cannot be determined by sieving. Optical characterization indicated that the particles had a size of 0.2 to 4 cm with the main particle size in the range of 3 -4 cm.

Testing for CAS 55184-72-0 is covered by tests with CAS 848588-96-5. Both substances are very similar since they differ mainly in the share of C13 (CAS 848588-96-5 C13> 80%; CAS 55184-72-0 > 95%). Hence, read across from CAS 848588-96-5 (source) to CAS 55184-72-0 (target) is considered as appropriate for both substances.

Executive summary:

In the non-GLP Klimisch 1 study from Bütfering (2013) the particle size distribution of Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate was intended to be determined by sieving. Due to the pasty product properties of the test item Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate the particle size cannot be determined by sieving. Optical characterization indicated that the particles had a size of 0.2 to 4 cm with the main particle size in the range of 3 -4 cm.

This study is considered relevant for the risk assessment.

Testing for CAS 55184-72-0 is covered by tests with CAS 848588-96-5. Both substances are very similar since they differ mainly in the share of C13 (CAS 848588-96-5 C13> 80%; CAS 55184-72-0 > 95%). Hence, read across from CAS 848588-96-5 (source) to CAS 55184-72-0 (target) is considered as appropriate for both substances.

Description of key information

particles had a size of 0.2 to 4 cm

Additional information

In the non-GLP Klimisch 1 study from Bütfering (2013) the particle size distribution of Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate was intended to be determined by sieving. Due to the pasty product properties of the test item Sodium bis(C11-14-isoalkyl, C13-rich) sulfosuccinate the particle size cannot be determined by sieving. Optical characterization indicated that the particles had a size of 0.2 to 4 cm with the main particle size in the range of 3 -4 cm.

This study is considered relevant for the risk assessment.