Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
12.4 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
124 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
1.24 µg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
12.4 µg/L

STP

Hazard assessment conclusion:
no emission to STP expected

Sediment (freshwater)

Hazard assessment conclusion:
no exposure of sediment expected

Sediment (marine water)

Hazard assessment conclusion:
no exposure of sediment expected

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no exposure of soil expected

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Relevant key information is given in the endpoint summaries on the respective properties.

For a summary and conclusion with regard to overall ecotoxicological hazards and respective classification and labelling requirements, see below!

Conclusion on classification

Classification according to REGULATION (EC) No. 1272/2008 (CLP) is performed independently for acute and chronic hazards.

Acute hazard category:

The highest acute aquatic toxicity of three trophic levels was determined for the freshwater alga Pseudokirchneriella subcapitata with an EL50 (Pseudokirchneriella subcapitata; 72 h; static; growth rate) of 12.4 mg/L (95% CI: 11.8-13.2). Based on CLP regulation, no acute classification is applicable (EC50 > 1.0 mg/L).

Chronic hazard category:

Chronic data are available for algae, only. An EL10 (Pseudokirchneriella subcapitata; 72 h; static; growth rate) of 5.9 mg/L (95% CI: 5.3-6.6) had been determined.

Using available chronic data with the scheme for rapidly degradable substances given in Table 4.1.0 of Part 4, Annex I to CLP, no chronic classification is applicable (EC10 > 1 mg/L).

Using available acute data, decisive for a possible chronic classification is failure or fulfilment of (1) rapid degradability and / or (2) presence or absence of a bioaccumulation potential.

The substance is rapidly degradable (readily biodegradable) and decomposes very fast by hydrolysis / oxidation. However, the log Kow for one of the final hydrolysis products (LHP-fin2) is above the cut-off of 4 (log Kow 7.32). As such, chronic classification should in addition be performed based on acute data for the two trophic levels lacking chronic data, i.e. fish and daphnia. For both, no effects were observed up to the highest nominal loading level (WAF) of 100 mg/L. Consequently, no chronic classification is resulting based on assessment of acute data.

In conclusion, there are no classification requirements for Step 2 catalyst with regard to environmental hazards.