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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Based on the available data for titanium, titanium compounds like titanium carbide are expected to have a very low mobility in soil. 

Key value for chemical safety assessment

Other adsorption coefficients

Type:
log Kp (solids-water in sediment)
Value in L/kg:
4.61

Additional information

Roychoudhury and Starke (2006) examined the partitioning behaviour of Ti between surface water and riverine sediments. Concentrations of Ti were measured in the sediment samples as well as in the water phase. The mean log Kd for sediment is 4.61 L/kg dw (range: 3.79-5.13), which is within the same order of magnitude as the world average partition coefficient (log Kp in L/kg) for Ti of 5.75 reported by Li (2000).

Vesely et al. (2001), who examined the partitioning behaviour of Ti between surface water and suspended matter, report a lower log Kd for suspended matter of 2.36 L/kg dw. However, the publication is not considered reliable due to deficiencies in documentation. Therefore, this result is not further considered in the assessment.

In conclusion, based on the available data for titanium, titanium compounds like titanium carbide are expected to have a very low mobility in soil.