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EC number: 273-050-6 | CAS number: 68936-98-1 The complex combination of hydrocarbons produced by the distillation of products from cumene manufacturing process. It consists primarily of diisopropylbenzene with various small amounts of C4 substituted benzenes and heavier non-aromatic hydrocarbons.
- 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
Additional information
Cumene bottoms represents the distillation residues of 1-methylethylbenzene and belongs to the class of UVCB-substances. Cumene bottoms is an organic liquid with a characteristic odor. As no exothermal or endothermal effects were observed in the DSC runs in the temperature range of -100°C up to 50°C, the melting point of the test item is <-100°C at atmospheric pressure. The boiling range of cumene bottoms was determined to be 188 -189°C at 1013 hPa using differential scanning calorimetry. The relative density (D20/4) of the test substance was determined to be 0.87. According to REACH Regulation (Annex VII, 7.14. Column 2), a study on granulometry does not need to be conducted if the the substance is marketed or used in a non solid or non granular form. This holds true for cumene bottoms. Based on the experimental data, the vapour pressure of cumene bottoms was calculated to 7 hPa at 20°C. Experimental determination of the octanol-water partition coefficient and the water solubility has been omitted according to REACH Regulation (Annex XI, 2.) as it is technically not possible to conduct studies on thess endpoints as a consequence of the properties of this UVCB-substance. According to REACH Regulation (Annex VII, 7.6, column 2), the study on surface tension does not need to be done if the water solubility at 20°C is less than 1 mg/L. In the safety data sheet of the manufacturer, cumene bottoms is reported to be insoluble in water (water solubility: < 0.1 mg/L). The flash point and the auto-ignition temperature were determined to be 54.5°C at 1013 hPa and 415°C at ca. 1006 hPa, respectively. A flammability of the test item in contact with water or damp air was not observed during the period of 7 h and at temperatures ranging from 22.3-23.2°C. The test item has no explosive (heat of decomopsition < 500 J/g) and no oxidising properties. As the differential scanning calorimetry showed no exothermal or endothermal effects up to the maximum temperature of 500°C, the test substance can be regarded as thermally stable.
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