Transport Tungsten Carbide between Environmental Compartments

The distribution of tungsten carbide between the environmental compartments cannot be calculated with the EPIWIN estimation program, since the structure of the molecule is not accepted. Also the distribution of tungsten carbide according to Mackay Level I cannot be calculated (Bayer Industry Services, 2005; Noack, 1995 a, b,c).

It is assumed that the vapour pressure of the substance is to be extremely low and thus, any processes of volatilization are unlikely to occur (Bayer Industry Services, 2005).

In the ambient atmosphere, tungsten carbide will exist solely in the particulate phase and may be removed from the air by wet and dry deposition (Bayer Industry Services, 2005).