Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 939-424-4 | CAS number: 1469983-44-5
- 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
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.46 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.15 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.046 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.015 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 9.8 g/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 765.3 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 76.5 mg/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:
- 152.3 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
PNECsediment and PNECsoil: No data are available for the toxicity of Diacid 1550 for sediment organisms and terrestrial organisms. The toxicity is derived from equilibrium partitioning using the organic carbon partitioning coefficient Koc for Diacid 1550. However, the Koc has not been determined but predicted. It is not certain whether this prediction is correct, as the substance is an acid but under environmental conditions it will be in its ionic form. However, for the risk characterisation the same Koc is used both for the PNEC derivation and for the estimation of the PEC, so in the end it does not affect the risk characterisation ratio. However, for comparison of PNECsediment and PNECsoil to those for other substances, the limitations due to the Koc should be taken into account.
PNECoral (secondary poisoning) can be derived from the repeated dose toxicity test that was combined with the reprotox screening test (see IUCLID 7.5.1 and 7.5.8). The effects relevant for wildlife populations are related to mortality, reproduction or growth. In this study the parents were exposed for 28 - 40 days starting two weeks prior to mating. Females and offspring were exposed until termination after day 4 of lactation. Effects on clinical chemistry of the parent animals were observed at lower concentrations but no effects were observed on the reproduction and the development of the 4d-old offspring. Therefore the relevant NOAEL was 1324 mg/kg bw/d. NOEC(oral) = NOAEL(rat) * CONV. CONV for rat (> 6 weeks) is 20 (Guidance R.10) so NOEC(oral) = 1324 * 20 = 26.5 g/kg food. The females were exposed during 40 days. Using the Assessment factor fo 28 days, the PNEC(oral) is derived by NOEC(oral)/300 = 88.3 mg/kg food.
However, the risk for predators on secondary poisoning is considered of no concern, since the substance is not expected to accumulate and it is not classified with specified hazard categories. Therefore no PNEC was given in the relevant fields.
Conclusion on classification
Acute (short-term) aquatic hazard
Acute toxicity data for fish, crustaceae and algae are > 1mg/l. Therefore the substance needs no classification with Category Acute 1 according to CLP criteria.
Long-term aquatic hazard
Adequate chronic toxicity data is available for fish, invertebrates and algae. All NOEC values found were > 1 mg/L and the substance is readily biodegradable. Therefore the substance needs no classification for Category Chronic 1, 2 or 3 according to CLP criteria.
Safety net classification
The safety net classification does not apply. The substance is water soluble under the conditions of the toxicity studies, the substance is readily degradable and information on bioaccumulation suggests a low bioaccumulation potential. Therefore the substance needs no classification as Chronic Category 4
Conclusion
The substance does not need to be classified for any environmental hazard.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.