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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
1.32 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1.32 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.132 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
0.132 µg/L

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
24.7 mg/L
Assessment factor:
1
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
96.9 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
9.69 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
18.61 µg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

For the Environmental classification the following data of n-undecanal have to be considered:

1. Acute ecotoxicity (lowest available value):   Algae ErC50 (72h) =  0.132 mg/L

2. Chronic ecotoxicity (lowest available value): Algae ErC10 (72h) = 0.049 mg/L

3. Acute exotoxicity, lowest acute value from trophic levels without chronic data (aquatic invertebrates and fish): 48 hours-EC50 for Daphnia magna = 1.459 mg/L;

4. Ready biodegradability

5. Log Kow = 4.8 (QSAR derived BCF data are not relevant for classification and labelling)

Based on these parameters the proposed classification according to REGULATION (EC) No. 1272/2008 (CLP) is as follows:

Acute (short-term) aquatic hazard:    Acute Category 1, based on readily biodegradable, ErC50 (72h) < 1 mg/L); M=1

Long-term (chronic) aquatic hazard based on chronic data:   Chronic Category 2  based on readily biodegradable, ErC10 (72h) >0.01 but <= 0.1 mg/L; M = -

Long-term (chronic) aquatic hazard based on acute data set (trophic levels without chronic data) for compounds with log Kow >= 4.0: Chronic Category 2, based on EC50 (48h) >1 but <= 10 mg/L, M = 1

The M factors given before are based on the rules given in Section 4.1.3.5.5.5, in 2ndATP of CLP Regulation 2011/286/EEC for assigning of M factors.

Concluding, the following aquatic toxicity classification results for n-undecanal:

Acute Category 1, M=1;

Chronic Category 2, M=1;