Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

VCl3 is very hygroscopic and gives, in contact of humidity :

VCl3 + H2O => VOCl + 2 HCL

VOCl + 1/2Cl2 => VOCl2

The dissolution reaction in water is instantaneous (half-life of VCl3 < 1 hour – VCl3 can be considered as a hydrolytically unstable substance), gives white fumes of HCl and the pH of the solution is < 2.

This reaction is verified weekly in a laboratory by the color change when VCl3 is exposed to the air (red to green).

Testing for hydrolysis is then technically impossible and scientifically unjustified: instantaneous decomposition of VCl4 in presence of humidity of air do not allow hydrolysis testing.

Additional information