Asphalt, sulfonated, sodium salt

Particle size distribution (Granulometry)

Administrative data

Endpoint:

particle size distribution (granulometry)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2008-02-27 to 2008-12-01

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods with acceptable restrictions

Remarks:

Analytical method is similar to ASTM B822 method for metal particle size analysis. Very little information on test substance.

Cross-reference

Cross-reference 1

Reason / purpose for cross-reference:

reference to same study

Cross-reference 2

Reason / purpose for cross-reference:

reference to other study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2010

Report date:

2010

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

other: Analytical method is similar to ASTM B822 method for metal particle size analysis.

Deviations:

yes

Remarks:

Very little information on test substance.

Principles of method if other than guideline:

N/A

GLP compliance:

no

Type of method:

Laser scattering/diffraction

Type of distribution:

counted distribution

Test material

Test material information

Constituent 1

Reference substance name:

Asphalt, sulfonated, sodium salt

EC Number:

269-212-0

EC Name:

Asphalt, sulfonated, sodium salt

Cas Number:

68201-32-1

Molecular formula:

UVCB

IUPAC Name:

Asphalt, sulfonated, sodium salt

Details on test material:

- Name of test material (as cited in study report): Sodium asphalt sulfonate
- Substance type: Active
- Physical state: Powder
- Other: Sample obtained from Chevron Phillips' Alamo manufacturing facility in Conroe, TX

Results and discussion

Particle size

Particle size 1

Percentile:

D50

Mean:

227.1 µm

Remarks on result:

other: Calculations from 0.248 to 1320 µm

Particle size 2

Percentile:

D10

Mean:

62.8 µm

Remarks on result:

other: sodium asphalt sulfonate (Note: SAS particle size distribution prior to grinding)

Particle size 3

Percentile:

other: D25

Mean:

109 µm

Remarks on result:

other: sodium asphalt sulfonate (Note: SAS particle size distribution prior to grinding)

Particle size 4

Percentile:

D50

Mean:

227 µm

Remarks on result:

other: sodium asphalt sulfonate (Note: SAS particle size distribution prior to grinding)

Particle size 5

Percentile:

other: D75

Mean:

405 µm

Remarks on result:

other: sodium asphalt sulfonate (Note: SAS particle size distribution prior to grinding)

Particle size 6

Percentile:

D90

Mean:

588 µm

Remarks on result:

other: sodium asphalt sulfonate (Note: SAS particle size distribution prior to grinding)

Any other information on results incl. tables

Table 1. Results of Particle Size Analysis

Substance	D10 um	D25 um	D50 um	D75 um	D90 um
Causticized lignite Lot 230 ST3 #14	5.16	20.3	72.6	149	270
Soltex additive Lot 010513	52.7	111	194	304	430
SAS North Dryer 2/14/08	62.8	109	227	405	588

Note: SAS particle size distribution prior to grinding

Applicant's summary and conclusion

Conclusions:

Only about 2% of Soltex® Additive is less than 10 microns.

Executive summary:

N/A