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EC number: 271-756-9 | CAS number: 68607-24-9
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data

Endpoint summary
Administrative data
Description of key information
Aquatic bioaccumulation
An uptake of all analyzed compounds C18_ATQ, C20_ATQ and C22_ATQ of the test item in fish was observed. Since no steady-state phase was reached during uptake, no steady-state bioconcentration factors were calculated. The kinetic bioconcentration factors have been calculated based on fish body weight and time-weighted average mean measured concentrations of the test item compounds C18_ATQ, C20_ATQ and C22_ATQ in water during uptake phase.
The results showed an ambiguous finding regarding the carbon chain length. Due to the high adsorption of the test substance it can be assumed that a certain amount of the substance is adsorbed on the fish skin. In order to differentiate between the fraction on the fish skin and the fraction in the fish fillet, further investigations were necessary. The results of this distribution in fish (fillet and skin) ends in the following BCFs
Nominal test concentration [µg/L] | 5.00 | 20.0 | |
BCFKGL | C18_ATQ | 1787 | 957 |
C20_ATQ | 1263 | 920 | |
C22_ATQ | 691 | 351 | |
Weighted BCFKGL | 835 | 465 |
All BCFs of the 3 chain lengths and of the two concentrations are below 2000.
Terrestrial bioaccumulation
C20/22 ATQ is a quaternary substance and positively charged. It is known that ionic compound has a low potential to cross membranes. In addition, C20/22 ATQ has a low measured Log Kow of 3.3 (see IUCLID Section 4.7) and therefore a bioaccumulation potential in soil is unlikely. It can be concluded that the substance is rapidly biodegraded/transformed in soils (see IUCLID Section 5.2.3). The half-life determined from three different soils for C22-ATQ was 28.5 days (geometric mean).
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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