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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Automatic calculation with MeCLas tool
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
other: software
Title:
MECLAS: Metals Classification Tool, version V5.0
Author:
ARCHE Consulting
Year:
2018
Bibliographic source:
MECLAS webpage: www.meclas.eu
Report date:
2018

Materials and methods

Principles of method if other than guideline:
Aquatic toxicity of the UVCB substance was determined by classifying based on Mixture rules from EU CLP ( tier 1= summation of classified components or Tier 2 = additivity of soluble components to derive Hazard class) and back calculation to the corresponding L(E)C50 range

Test material

Constituent 1
Chemical structure
Reference substance name:
Germanium dioxide
EC Number:
215-180-8
EC Name:
Germanium dioxide
Cas Number:
1310-53-8
Molecular formula:
GeO2
IUPAC Name:
Germanium dioxide
Constituent 2
Chemical structure
Reference substance name:
Silicon dioxide
EC Number:
231-545-4
EC Name:
Silicon dioxide
Cas Number:
7631-86-9
Molecular formula:
O2Si
IUPAC Name:
dioxosilane equivalent
Constituent 3
Chemical structure
Reference substance name:
Iron sulphide
EC Number:
215-268-6
EC Name:
Iron sulphide
Cas Number:
1317-37-9
Molecular formula:
FeS
IUPAC Name:
Iron (II) Sulfide
Constituent 4
Chemical structure
Reference substance name:
Calcium carbonate
EC Number:
207-439-9
EC Name:
Calcium carbonate
Cas Number:
471-34-1
Molecular formula:
CH2O3.Ca
IUPAC Name:
calcium carbonate
Constituent 5
Chemical structure
Reference substance name:
Calcium sulfate
EC Number:
231-900-3
EC Name:
Calcium sulfate
Cas Number:
7778-18-9
Molecular formula:
Ca.H2O4S
IUPAC Name:
calcium sulfate
Constituent 6
Chemical structure
Reference substance name:
Calcium fluoride
EC Number:
232-188-7
EC Name:
Calcium fluoride
Cas Number:
7789-75-5
Molecular formula:
CaF2
IUPAC Name:
Calcium fluoride equivalent
Constituent 7
Chemical structure
Reference substance name:
Calcium dihydroxide
EC Number:
215-137-3
EC Name:
Calcium dihydroxide
Cas Number:
1305-62-0
Molecular formula:
Ca(OH)2
IUPAC Name:
Calcium hydroxide equivalent
Constituent 8
Chemical structure
Reference substance name:
Sodium chloride
EC Number:
231-598-3
EC Name:
Sodium chloride
Cas Number:
7647-14-5
Molecular formula:
ClNa
IUPAC Name:
sodium chloride
Constituent 9
Chemical structure
Reference substance name:
Lead oxide
EC Number:
215-626-1
EC Name:
Lead oxide
Cas Number:
1335-25-7
Molecular formula:
PbO
IUPAC Name:
Lead oxide equivalent
Constituent 10
Chemical structure
Reference substance name:
Zinc oxide
EC Number:
215-222-5
EC Name:
Zinc oxide
Cas Number:
1314-13-2
Molecular formula:
OZn
IUPAC Name:
Zinc oxide equivalent
Constituent 11
Chemical structure
Reference substance name:
Copper oxide
EC Number:
215-269-1
EC Name:
Copper oxide
Cas Number:
1317-38-0
Molecular formula:
CuO
IUPAC Name:
copper (II) oxide equivalent
Constituent 12
Chemical structure
Reference substance name:
Tricobalt tetraoxide
EC Number:
215-157-2
EC Name:
Tricobalt tetraoxide
Cas Number:
1308-06-1
Molecular formula:
Co3O4
IUPAC Name:
Tricobalt tetraoxide equivalent
Test material form:
solid

Results and discussion

Effect concentrations
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
> 1 mg/L
Nominal / measured:
estimated
Conc. based on:
test mat.
Basis for effect:
other: most sensitive species

Any other information on results incl. tables

According to MeClas, the substance is not classified as acute 1 to environment.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
Good quality estimate of the L/EC50 of the UVCB substance.
The substance is not classified as acute cat 1 to environment resulting in a L(E)C50 > 1 mg/L.
Executive summary:

The study provided a conservative estimate of the effect concentration, derived on basis of the classification outcome (mixture toxicity rules) from a reasonable worst-case sample of the substance using mineralogical information from the representative sample. 

 

Validity of the model used:

1. Defined endpoint: the endpoint is a REACH compliant defined endpoint

2. Unambiguous algorithm: EU CLP guidance based summation formula to determine classification, followed by back-calculation to related hazard criteria

3. Applicability domain: applicable to classify complex metal containing materials. 

4. Mechanistic interpretation - metal species: the tool translates the elemental composition into a mineralogical composition relevant for classification.