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Ecotoxicological information

Toxicity to terrestrial plants

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Administrative data

Endpoint:
toxicity to terrestrial plants: short-term
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
disregarded due to major methodological deficiencies
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: No guideline study, insufficient documentation, no relevant exposure for terrestrial plants (solution experiment).

Data source

Reference
Reference Type:
publication
Title:
Ecotoxicity of alternative deicers.
Author:
Joutti A., Schultz E., Pessala P., Nysten T., Hellsten P.
Year:
2003
Bibliographic source:
Journal of Soils and Sediments 3/4: 269-272.

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
Allium cepa (onion) root elongation in eluate solutions.
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
Magnesium chloride
EC Number:
232-094-6
EC Name:
Magnesium chloride
Cas Number:
7786-30-3
IUPAC Name:
magnesium dichloride
Details on test material:
technical grade MgCl2 from Kemikaalimiehet Oy, Finland.

Sampling and analysis

Analytical monitoring:
no

Test substrate

Vehicle:
no

Test organisms

Species:
Allium cepa
Plant group:
Dicotyledonae (dicots)
Details on test organisms:
fresh, small equal-sized bulbs of a commercial variety; outer scales removed

Study design

Test type:
other: root elongation
Study type:
laboratory study
Substrate type:
other: eluate dilutions
Limit test:
no
Total exposure duration:
4 d

Test conditions

Test temperature:
room temperature (not reported with a value)
pH:
No data
Moisture:
no data
Details on test conditions:
3-4 repliactes/treatment
Nominal and measured concentrations:
Nominal: 0.4% to 100% eluate concentrations in tap water

Results and discussion

Effect concentrations
Species:
Allium cepa
Duration:
4 d
Dose descriptor:
EC50
Effect conc.:
2 195 other: mg/L
Nominal / measured:
nominal
Conc. based on:
element
Remarks:
magnesium
Basis for effect:
other: Root elongation
Reported statistics and error estimates:
EC50 derived by graphical interpolation

Applicant's summary and conclusion