Registration Dossier
Registration Dossier
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EC number: 233-038-3 | CAS number: 10025-73-7
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
Description of key information
The BCF for chromium3+ was not specified in the study published by Shuster and Pringle. However, it was recalculated and indicated to be 116 as reported in the AMBIENT WATER QUALITY CRITERIA FOR CHROMIUM published by U.S. ENVIRONMENTAL PROTECTION AGENCY.
Key value for chemical safety assessment
- BCF (aquatic species):
- 116 L/kg ww
Additional information
A 20-week study was conducted early in 1968 to corroborate an earlier experiment on uptake by Crassostrea virginica. About 200 November-harvested oysters were placed in each of eight 120-liter tanks making use of a flow-through sewer water system. During the acclimation and experiment periods the sea water was maintained at a flow rate of 2.5 l/min and a 20 ±1 degree C temperature with salinity variable but usually 31 ± 2 ppt. The test animals were subjected to continuous levels of the test substance at 0.05 ppm and 0.1 ppm. Each week the test animals were removed for analysis.
The test result indicated the metal in the tissues of the test animals ranged from less than 0.21 ppm to 6.28 ppm at 0.05 ppm concentration group and ranged from less than 0.21 ppm to 11.49 ppm at 0.1 ppm concentration group.
The BCF for the test substance was not specified in this study. However, it was indicated to be 116 as reported in the AMBIENT WATER QUALITY CRITERIA FOR CHROMIUM published by U.S. ENVIRONMENTAL PROTECTION AGENCY.
In a supporting study the BCF for chromium (III) in muscles resulting from exposure to 1 mg Cr/L seawater was found being 86 (dimensionless) based on wet weight. Distribution to organs was 26.1% to muscle tissue, 34.9% to mantle and gills tissue and 39% to viscera tissue.
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