Molybdic acid

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:

May 2022, 16th - May 2022, 22nd

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

The procedure is not completely valid for Molybdic acid. As stated in the OECD 110 method, the procedure is valid for water insoluble (<10-6 g/L = 0.001 mg/L) substances, and water solubility of molybdic acid was reported to be around 700 mg/L based on recent OECD 105 test results. The result can be regarded as a lower limit knowing that the particles might be partially dissolved, so the true particle size is larger than the data reported.

Qualifier:

equivalent or similar to guideline

Guideline:

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

GLP compliance:

no

Type of method:

Laser scattering/diffraction

Type of distribution:

volumetric distribution

Percentile:

D10

Mean:

45.6 µm

St. dev.:

2.2

Percentile:

D50

Mean:

67.2 µm

St. dev.:

1.9

Percentile:

D90

Mean:

103.3 µm

St. dev.:

2.3

Conclusions:

The particle size of the molybdic acid sample was reported as follows:
D10 = 45.6 µm
D50 = 67.2 µm
D90 = 103.3 µm

Description of key information

Using a method similar to OECD guideline 110, the particle size of the molybdic acid sample was reported as follows:
D10 = 45.6 µm
D50 = 67.2 µm
D90 = 103.3 µm

Additional information

Using a method similar to OECD guideline 110, the particle size of the molybdic acid sample was reported as follows:

D10 = 45.6 µm

D50 = 67.2 µm

D90 = 103.3 µm