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EC number: 204-661-8 | CAS number: 123-91-1
- 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
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- 1,4-dioxane
- Type of composition:
- legal entity composition of the substance
- State / form:
- liquid
- Reference substance:
- 1,4-dioxane
- Name:
- 1,4-dioxane
- Type of composition:
- boundary composition of the substance
- State / form:
- liquid
- Reference substance:
- 1,4-dioxane
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Parent compound:
The substance meets the criteria for classification as persistance (P) or very persistance (vP). As the substance is concluded to be not readily biodegradable (according to OECD criteria), it should be considered as potentially P/vP from a worst-case point of view.
However, the substance is not B/vB based on an experimental data available for the substance. (mean BCF = 0.45, OECD 305C, IUCLID Ch. 5.3.1).
The substance is also not T since the lowest available chronic value is >> 0.01 mg/L and the substance holds no relevant classification.
In conclusion, the substance is not to be considered as a PBT/vPvB substance.
PBT / vPvB – Assessment for modelled metabolites of 1,4-dioxane (CAS 123-91-1):
ECHA Guidance on information requirements and chemical safety assessment (v3.0, June 2017), Chapter R.11.4.1 specifies that “Constituents, impurities and additives should normally be considered relevant for the PBT/vPvB assessment when they are present in concentration of ≥ 0.1% (w/w)” […] “Similar arguments apply to relevant transformation/degradation products”.
In order to identify the relevant degradation products of the main constituents of the substance as a standard information requirement according to Column 1, Section 9.2.3. of Annex IX to REACH and for purposes of an assessment of potential PBT/vPvB properties, the metabolites were modelled using CATALOGIC 301C v11.15 – July 2018 (OASIS CATALOGIC v5.13.1.156).
CATALOGIC 301C v11.15 (OASIS Catalogic v5.13.1) predicted for the parent compound 8 metabolites, identifying no metabolites as relevant degradation products in terms of PBT/vPvB assessment, with an estimated quantity of ≥ 0.1% (for details see ‘Attached background material’ of the respective Endpoint Study Record).
Table 1. The predicted metabolites from the CATALOGIC 301C v11.15 estimation model.
The predicted metabolites for the substance from the CATALOGIC 301C v11.15 estimation
model
#
Smiles
Quantity [mol/mol parent]
log Kow
BOD (%)
Parent
C1COCCO1 (CAS 123-91-1)
0.991
-0.32
1
2
OC1COCCO1
8.987E-008
-1.86
99
3
OCCOCC=O
8.986E-008
-1.91
99
4
OCCOCC(O)=O
8.986E-008
-1.65
99
5
OC(=O)COCC=O
8.986E-008
-1.67
99
6
OC(=O)COCC(O)=O
8.98E-005
-2.01
99
7
OC(=O)C=O
1.779E-007
-1.4
100
11
OCC(O)=O
8.896E-008
-1.1
100
8
OC(=O)C(O)=O
1.779E-007
-1.7
100
(metabolite no: according to (Q)SAR model CATALOGIC 301C v11.15 – July 2018 (OASIS CATALOGIC v5.13.1.156))
In conclusion, there is no predicted metabolites present in a concentration of ≥ 0.1% (equivalent to >=0.001 mol/mol parent).
Referenceopen allclose all
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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