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Diss Factsheets
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EC number: 295-442-6 | CAS number: 92045-60-8 A complex combination of hydrocarbons obtained by subjecting a petroleum naphtha to a sweetening process to convert mercaptans or to remove acidic impurities. It consists of hydrocarbons having carbon numbers predominantly in the range of C4 through C5, predominantly C5, and boiling in the range of approximately minus 10°C to 35°C (14°F to 95°F).
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_ecotoxicological-information.png)
Additional ecotoxological information
Administrative data
- Endpoint:
- additional ecotoxicological information
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- N/A
- Reliability:
- 2 (reliable with restrictions)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
Materials and methods
Test guideline
- Qualifier:
- no guideline available
- Principles of method if other than guideline:
- A fumigation experiment was performed in which a number of plant species representing the European flora was exposed to a range of mesitylene concentrations. Pressurised nitrogen was bubbled through warmed liquid mesitylene 10 bring it into the gas phase. It was then injected into the air-stream entering the plant fumigation chambers at constant concentrations for a period of 12 weeks. The mean measured concentrations were om, 0.12, 1.22, 3.5, 10.6, 12.5 and 29 ppmV mesitylene.
- GLP compliance:
- not specified
Test material
- Reference substance name:
- Mesitylene
- EC Number:
- 203-604-4
- EC Name:
- Mesitylene
- Cas Number:
- 108-67-8
- IUPAC Name:
- mesitylene
- Details on test material:
- The test substance 1,3,5-trimethylbenzene further referred to as mesitylene is an aromatic hydrocarbon with an aromatic hydrocarbon with three methyl substituents attached to the benzene ring. It is a major urban volatile organic compound with its chemical formula CH3(CH2)9CH3. It was obtained from Fisher Emergo, Purity 99%.
Constituent 1
Results and discussion
Any other information on results incl. tables
Actual exposure concentrations were quite stable and close to nominal values.Even though a range finding test was performed before the definitiveexperiments were carried out, no significant effects were found in the definitive experiments at the tested concentrations. Therefore, no NOECs could be calculated. Tissue concentrations of undecane were measured in plant samples, showing that the hydrocarbon was adsorbed to the plant although no significant toxicity occurred. Low concentrations of test compound were measured in the controls.
High variation between replicated plants was observed for some treatments. Therefore, a statistical variance analysis was performed to identify trends related to hydrocarbon exposure. The main results of this analysis for the experiment are negative trend observed forS. nigrum, B. campestris and P. vulgaris shoot biomass andP. ovata leaf ear length.
Applicant's summary and conclusion
- Conclusions:
- No significant toxicity occurred.
- Executive summary:
Implications for the gasoline risk assessment.The highest nominal test concentrations (in ppmV) were recalculated to g/m3using the density of the test compounds (0.74 g/cm3). In this way, the highest test concentrations, where still no significant phytotoxic effects were observed, could be compared with environmental PECs for the relevant hydrocarbon block from the gasoline risk assessment (block 7). The highest test concentrations were 6.7 g/m3. This single compound concentration is up to 106times higher than PECs reported for the block in the gasoline risk assessment, clearly showing that no risk for exposed vegetation due to the presence of these compounds in the atmosphere is expected.
Atmospheric Predicted Environmental Concentrations
Block
Repr. components
Local
(ug/m3)
Regional
(ug/m3)
This study
(ug/m3)
7
C9-C11 n+iso paraffins
0.15
0.12
6.7*106
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.
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