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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
0.007 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.068 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.001 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
10 mg/L
Assessment factor:
10

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.024 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
10 mg/kg food
Assessment factor:
300

Additional information

Conclusion on classification

Classification related key information

Biodegradation in water: screening test: 90% (DOC) in 19 days (EU-Method C.4-B)

Log Kow: 3.23 (OECD 107)

Acute toxicity:

- to Fish: LC50 (96 h) = 6.82 mg/L (based on expert statement)

- to Crustacea: EC50 (48 h) = 46 mg/L for Daphnia magna (EU Directive 92/69/EWG)

- to Algae: ECr50 (72 h) = 45 mg/L for Scenedesmus subspicatus (EU Directive 92/69/EWG)

Chronic toxicity:

- to Fish: not available

- to Crustacea: not available

- to Algae: NOEC (72h) = 14 mg/L for Scenedesmus subspicatus (EU Directive 92/69/EWG)

 

Classification justification according to CLP

Based on the data above, 4-tert-butylcyclohexanol is considered rapidly biodegradable. The acute aquatic toxicity L(E)C50 is > 1 mg/L for fish, invertebrates and algae. Valid chronic toxicity data are available for the alga Scenedesmus subspicatus with a NOEC > 10 mg/L. 4-tert-butylcyclohexanol does not need to be classified according to the Regulation (EC) No. 1272/2008 (CLP) and the Regulation (EU) No. 286/2011 (2ndATP).

 

Classification justification according to DSD

Based on the data above, 4-tert-butylcyclohexanol is considered to have medium potential for accumulation and is rapidly degradable. The acute aquatic toxicity L(E)C50 is > 1 mg/L for all trophic levels. Therefore 4-tert-butylcyclohexanol has been classified and labelled as environmental hazard R51/53 according to the Directive 67/548/EEC.