Registration Dossier

Environmental fate & pathways

Hydrolysis

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Administrative data

Endpoint:
hydrolysis
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Operating and technical experience of the producer

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2018
Report Date:
2017

Materials and methods

Principles of method if other than guideline:
Daily manipulation of the substance by the producer
GLP compliance:
no
Remarks:
Routine test in the laboratory

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
No details
Specific details on test material used for the study:
Source/ batch : quality control one a week
Radiolabelling:
no

Study design

Analytical monitoring:
no
Details on sampling:
Not applicable
Buffers:
Not applicable
Duration of test
Duration:
1 h
pH:
7
Temp.:
20 °C
Number of replicates:
Not applicable
Positive controls:
no
Negative controls:
no
Statistical methods:
Not applicable

Results and discussion

Preliminary study:
No pertient
Test performance:
No pertient
Transformation products:
yes
Identity of transformation productsopen allclose all
No.:
#1
Reference
Reference substance name:
Unnamed
IUPAC name:
hydrochloric acid
Identifier:
common name
Identity:
hydrochloric acid
No.:
#2
Reference
Reference substance name:
Unnamed
Inventory number:
InventoryMultipleMappingImpl [inventoryEntryValue=EC 233-517-7]
IUPAC name:
dichloro(oxo)vanadium
CAS number:
10213-09-9
Molecular formula:
Cl2OV
Molecular weight:
ca. 173.3
SMILES notation:
O=[V+2].[Cl-].[Cl-]
InChl:
InChI=1S/2ClH.O.V/h2*1H;;/q;;;+2/p-2
Details on hydrolysis and appearance of transformation product(s):
When manipulate in laboratory and exposed to humidity of air, VCl3 decomposes instantenaously producing change in colour (red to green) of the product and in pH (<2)
Dissipation half-life of parent compound
pH:
2
Temp.:
20 °C
Half-life:
< 1 h

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
When exposed to humidity of air, VCl3 instantaneously decomposes in VOCl2 and HCl, following the equation:

VCl3 + H2O => VOCl + 2 HCL
VOCl + 1/2Cl2 => VOCl2

This reaction is verified weekly in a laboratory by the color change when VCl4 is exposed to the air (red to green).
Testing for hydrolysis is then technically impossible and scientifically unjustified: instantaneous decomposition of VCl3 in presence of humidity of air do not allow hydrolysis testing.
Executive summary:

When exposed to humidity of air, VCl3 instantaneously decomposes in VOCl2 and HCl, following the equation:

VCl3 + H2O => VOCl + 2 HCL

VOCl + 1/2Cl2 => VOCl2

This reaction is verified weekly in a laboratory by the color change when VCl4 is exposed to the air (red to green).

Testing for hydrolysis is then technically impossible and scientifically unjustified: instantaneous decomposition of VCl3 in presence of humidity of air do not allow hydrolysis testing.