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EC number: 265-189-6 | CAS number: 64742-86-5 A complex combination of hydrocarbons obtained from a catalytic hydrodesulfurization process. It consists of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and boiling in the range of approximately 350°C to 600°C (662°F to 1112°F). This stream is likely to contain 5 wt. % or more of 4- to 6-membered condensed ring 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
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Endpoint summary
Administrative data
Description of key information
Heavy Fuel Oil Components are of low intrinsic hazard following acute oral, dermal and inhalation exposure.
-The acute oral LD50 was determined to be 4320 mg/kg bw in female rats and 5270 mg/kg bw in male rats.
- The acute inhalation LC50 was determined to be 4100 mg/m3 in rats.
- The acute dermal LD50 in rabbits was determined to be >2000 mg/kg bw.
Key value for chemical safety assessment
Acute toxicity: via oral route
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed
- Dose descriptor:
- LD50
- Value:
- 4 320 mg/kg bw
Acute toxicity: via inhalation route
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed
- Dose descriptor:
- LC50
- Value:
- 4 100 mg/m³ air
Acute toxicity: via dermal route
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed
- Dose descriptor:
- LD50
- Value:
- 2 000 mg/kg bw
Additional information
The acute oral toxicity of Heavy Fuel Oil Components following gavage administration to groups of male and female rats has been assessed in a number of GLP-compliant studies using either a “limit study” or standard (multi-group) LD50 design.
In a key acute oral toxicity study (API, 1982a), the test substance was administered to groups of fasted male and female SD rats (n = 5/sex) at dose levels of 3200 – 7810 mg/kg bw followed by a 14 day observation period. Variable mortality was present at treatment levels of 4000 mg/kg bw and above, with complete mortality in the high dose group. The main clinical signs were hypoactivity, ataxia, prostration, diarrhoea, hair loss and eye opacity but no lesions were visible at scheduled necropsy in survivors. The acute oral LD50 was determined to be 4320 mg/kg bw in females and 5270 mg/kg bw in males.
Data from multiple supporting GLP-compliant studies validates the low oral acute toxicity potential of heavy fuel oil components with LD50's reported to range from close to 5000 (ARCO, 1992d, e) to >5000 mg/kg bw (ARCO, 1992a-c, f-i; ARCO, 1990a, ARCO, 1989a; ARCO, 1986a,b; Mobil, 1988a,b; 1992a; and API, 1980a-d) in rats.
The acute dermal toxicity of Heavy Fuel Oil Components has been investigated in a number of GLP-compliant “limit studies”.
In a key acute dermal toxicity study (API, 1982a), the test material was administered to clipped skin from groups of male and female NW rabbits (n = 4/sex) at 2000 mg/kg bw followed by a 14 day observation period. The test site from 2 animals per sex was lightly abraded prior to dosing. There were no clinical signs or evidence of systemic toxicity, and all animals gained weight during the post-treatment period. No lesions were present at scheduled necropsy. The acute dermal LD50 was >2000 mg/kg bw in both sexes.
Data from multiple supporting GLP-compliant studies validates the low acute dermal toxicity potential of heavy fuel oil components with LD50's reported to be >2000 mg/kg bw (ARCO, 1987b-e; ARCO, 1989b,c; ARCO, 1990b,c; ARCO, 1992j-n; Mobil, 1988c-e, 1992b; and API, 1980a-d).
In a majority of instances in the dermal studies cited above, groups of male and female rabbits were exposed to neat test substance applied to a region of clipped dorsal skin (lightly abraded in some instances) for 24 h, under occlusion. Following removal of wrappings protecting the test site, animals were observed for clinical signs and body weight gain prior to gross necropsy on study day 14. The experimental design used when the test substance was applied to intact clipped skin was therefore generally consistent with that of guideline recommendations, although use of an occlusive covering may have resulted in enhanced dermal uptake relative to the guideline method.
Results are available from four studies that investigated the acute inhalation toxicity of respirable aerosols of Heavy Fuel Oil Components using male and female rats. No mortality was recorded in “limit tests” involving 4 hr exposure to measured concentrations in a range 320 – 3600 mg/m3 (ARCO, 1986c; 1994a,b) while a multi-group investigation (using exposure concentrations of 2100, 3300 and 4800 mg/m3) returned a calculated LC50 of 4100 mg/m3 for males and 4500 mg/m3 for females (ARCO, 1987a).
Justification for selection of acute toxicity – oral endpoint
One of 21 available studies.
Justification for selection of acute toxicity – inhalation endpoint
One of 4 available studies.
Justification for selection of acute toxicity – dermal endpoint
One of 22 available studies.
Justification for classification or non-classification
The acute toxicity of Heavy Fuel Oil Components has been adequately characterised in a large number of GLP-compliant guideline investigations following oral, dermal or inhalation (aerosol) exposure. Based on available data, Heavy Fuel Oils do not meet the criteria for classification as acute oral or dermal toxicants under EU CLP Regulation (EC No. 1272/2008). Heavy Fuel Oils are classified Acute toxicity 4; H332 under the EU CLP Regulation (EC No. 1272/2008).
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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