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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
toxicity to terrestrial plants: short-term
Type of information:
experimental study
Adequacy of study:
key study
Study period:
21 days
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Justification for type of information:
Peer-reviewed publication

Data source

Reference
Reference Type:
publication
Title:
Some effects of chromium toxicity on bush beans
Author:
A. Wallace, S. M. Soufi, J. W. Cha and E. M. Romney
Year:
1976
Bibliographic source:
Plant and Soil Vol. 44, No. 2 (APRIL 1976), pp. 471-473

Materials and methods

Test guideline
Qualifier:
no guideline followed
Version / remarks:
Followed accepted scientific principles.
Principles of method if other than guideline:
Bush beans (Phaseolus vulgaris) were grown in a glasshouse in a loam soil or in a nutrient solution containing chromium sulphate.
The concentrations in leaves were measured as part of an assessment of uptake.
The toxicity was measured in terms of vigour and in terms of yield.
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
chromium sulfate
IUPAC Name:
chromium sulfate
Details on test material:
- Name of test material (as cited in study report): chromium sulfate- Molecular formula (if other than submission substance): Cr2(SO4)3

Sampling and analysis

Analytical monitoring:
yes
Remarks:
Emission spectrography

Test substrate

Vehicle:
yes
Details on preparation and application of test substrate:
Supplied in water

Test organisms

Species:
Phaseolus vulgaris
Plant group:
Dicotyledonae (dicots)

Study design

Test type:
vegetative vigour test
Study type:
laboratory study
Substrate type:
natural soil
Limit test:
no
Total exposure duration:
18 d
Remarks:
18 days in soil; parallel test in growth media extended to 21 days

Test conditions

Details on test conditions:
Glasshouse trials.
Nominal and measured concentrations:
0, 50, 100 ppm in soil as Cr2SO4 (0, 50, 100 mg/kg)
0, 0.00001 M and 0.0001 M Cr2SO4 in growth media test (0, 3.92 mg/l and 39.2 mg/l)

Results and discussion

Effect concentrations
Key result
Species:
Phaseolus vulgaris
Duration:
21 d
Dose descriptor:
LOEC
Effect conc.:
ca. 100 mg/kg soil dw
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
phytotoxicity
Remarks on result:
other: In presence of EDTA
Details on results:
In liquid growth media, the lowest concentration 3.92 mg/l show reduction in plant vigour when presented with chelating agents.
Without chelating agent EDTA, uptake was minimal with a significantly lower toxicity noted.

Applicant's summary and conclusion

Conclusions:
Chromium III does reduce plant growth when absorption is enhanced through use of a chelating agent.
It is noted that chromium is not considered an essential element in plants, but there is natural uptake under normal environmental conditions.