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EC number: 297-474-6 | CAS number: 93572-43-1 A complex combination of hydrocarbons obtained by refining of crude oil. It consists predominantly of aromatics, naphthenics and paraffinics and produces a finished oil with a viscosity of 120 SUS at 100°F (23cSt at 40°C).
- 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
Acute Toxicity: inhalation
Administrative data
- Endpoint:
- acute toxicity: inhalation
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study summary report
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- review article or handbook
- Title:
- ROBUST SUMMARY OF INFORMATION ON LUBRICATING OIL BASESTOCKS
- Author:
- American Petroleum Institute
- Year:
- 2 003
- Bibliographic source:
- ROBUST SUMMARY OF INFORMATION ON LUBRICATING OIL BASESTOCKS pag 25-27
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 403 (Acute Inhalation Toxicity)
- Deviations:
- not specified
- GLP compliance:
- not specified
- Test type:
- other: APi method
- Limit test:
- yes
Test material
- Reference substance name:
- Distillates (petroleum), hydrotreated light naphthenic
- EC Number:
- 265-156-6
- EC Name:
- Distillates (petroleum), hydrotreated light naphthenic
- Cas Number:
- 64742-53-6
- IUPAC Name:
- 64742-53-6
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
Administration / exposure
- Route of administration:
- inhalation: aerosol
- Type of inhalation exposure:
- not specified
- Vehicle:
- air
- Analytical verification of test atmosphere concentrations:
- not specified
- Duration of exposure:
- ca. 4 h
- Concentrations:
- 1, 1.5, 2.5, 3.5 and 5 mg/l
- No. of animals per sex per dose:
- 5
- Control animals:
- yes
Results and discussion
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LC50
- Effect level:
- ca. 2.18 mg/L air
- Based on:
- not specified
- 95% CL:
- > 1.8 - < 2.55
- Exp. duration:
- 4 h
Any other information on results incl. tables
Actual exposure concentrations and mortalities were as follows:
Target level | Actual concentration | Mortality | ||
mg/l | mg/l | +/- SD | male | female |
0 | 0.02 | 0.01 | 0/5 | 0/5 |
1 | 1.04 | 0.1 | 1/5 | 1/5 |
1.5 | 1.51 | 0.15 | 0/5 | 0/5 |
2.5 | 2.37 | 0.31 | 3/5 | 3/5 |
3.5 | 3.49 | 0.36 | 5/5 | 5/5 |
5 | 5.05 | 0.18 | 5/5 | 5/5 |
Particle size measurements confirmed that mass median aerodynamic diameter and geometric standard deviation values were in the ranges 1.7 to 2.5 mµ and 1.5 to 1.61 respectively. These measurements confirm that the particles were within the respirable range. The LC50 for combined sexes was estimated to be 2.18 with 95% confidence limits of 1.80 to 2.55 mg/l. Body weight differences did not show a consistent dose related pattern. At the highest concentration, the animals were obscured by a dense aerosol and observations could not be made during the exposure period. In other groups, there was a decreased activity, wet inguinal area, eyes partially closed, wet coat, loose stool and oily coat during exposure. During the first week post-exposure, similar signs were observed as well as signs of poor condition, respiratory distress and some deaths occurred. During test week 2, most survivors were considered to be of normal appearance. The signs that were observed occurred in a dose related manner.
At histology, affected animals exhibited diffuse pulmonary congestion and perivascular edema that were mostly moderate or marked in degree. Less consistently spotty alveolar edema was also seen. There was widespread damage to alveolar walls resulting in fibronecrotic debris resembling hyaline membranes in more marked cases and extravasation of RBCs and PMNs. Necrosis and inflammation were seen in the walls of small blood vessels and there was spotty epithelial necrosis in small bronchioles, but the most severe damage seemed to be centroacinar. The larger airways were relatively unaffected. None of the surviving animals exhibited the above acute changes. However, most of the surviving animals exposed to 2.5 or 1.0 mg/l and above exhibited chronic inflammatory changes that were not seen in the controls and only occasionally in animals exposed at the 1.5 mg/l level, and then to a lesser degree of severity. Other findings were considered sporadic or unrelated to exposure to the test material.
Applicant's summary and conclusion
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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