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EC number: 249-854-8 | CAS number: 29797-40-8
- 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
Monitoring data
Administrative data
- Endpoint:
- monitoring data
- Type of information:
- experimental study
- Adequacy of study:
- other information
- Study period:
- 1979
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: Results are not conclusive.
- Justification for type of information:
- The substance described in this dossier is an isomeric mixture of five position isomers of dichlorotoluene. The similarities concerning chemical structure and key intrinsic properties such as log Kow and water solubility lead to the assumption that the values for ecotoxicological endpoints will also be very similar for the individual isomers and the mixture of isomers and that therefore results obtained with isomers can be useful for the assessment of the mixture.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Inventarisatie van organische microverontreinigingen in de Rijn in 1979 (Inventory of organic substances in the river Rhine in 1979)
- Author:
- Linders, J.B., H., J. et al.
- Year:
- 1 981
- Bibliographic source:
- Rijksinstizuut voor drinkwatervoorziening, The Netherlands
- Reference Type:
- publication
- Title:
- Persistent Organic Pollutants in River Water and Ground Water of the Netherlands
- Author:
- Zoeteman, B.C.J. et al.
- Year:
- 1 980
- Bibliographic source:
- Chemosphere, 9, 231 - 249
- Reference Type:
- secondary source
- Title:
- OECD SIDS 2,4-Dichlorotoluene, CAS No. 95-73-8
- Author:
- OECD
- Year:
- 1 995
- Bibliographic source:
- UNEP Publications
- Report date:
- 1995
- Reference Type:
- secondary source
- Title:
- HSDB database: 2,4 - DICHLOROTOLUENE, CASRN: 95-73-8
- Author:
- US National Library of Medicine
- Bibliographic source:
- http://toxnet.nlm.nih.gov/...HSDB
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The water from the following areas in The Netherlands was analysed in order to estimate the occurence of 2,4-dichlorotoluene:
a) Surface water of the river Rhine
b) Water in lakes
c) Ground water
The detection limit was reported to be 0.01 µg/L. - GLP compliance:
- no
Test material
- Reference substance name:
- 2,4-dichlorotoluene
- EC Number:
- 202-445-8
- EC Name:
- 2,4-dichlorotoluene
- Cas Number:
- 95-73-8
- Molecular formula:
- C7H6Cl2
- IUPAC Name:
- 2,4-dichloro-1-methylbenzene
Constituent 1
Results and discussion
Concentration
- Country:
- Netherlands (the)
- Location:
- Lobith - Gorinchem
- Substance or metabolite:
- substance
- Conc.:
- 0.3 µg/L
- Remarks on result:
- other: DT50 of 1.0 day (only Zoeteman)
Any other information on results incl. tables
Zoeteman et al. calculated a DT50 of 1.0 days based on a comparison of the concentrations of 2.4-DCT measured at Lobith on the 16 July and Gorinchem on 17 July 1979. The relevant concentration in Lobith on 16 July was 0.3 µ/L.The DT50 of 1 day in the river Rhine compared to the DT50 determined in lake water is explained by Zoeteman by "increased volatilisation and photochemical degradation by water turbulences".
For lake water, the half-lives were found to be at least by a factor 10 higher than in the river Rhine.
In ground water, 2,4-dichlorotoluene was not detected.
Linders et al. reported the results as follows:
Concentration of 2,4-dichlortoluene:
Lobith on 26.02.79: 0.1 µg/L
Maasluis on 01.03.79: no value reported
Lobith on 16.07.79: 0.3 µg/L
Gorinchem on 17.07.79: 0.3 µg/L
Maasluis on 19.07.79: 0.01 µg/L
Lobith on 15.10.79: 0.1 µg/L
Maasluis on 18.10.79: 0.1 µg/L
The results as reported by Linders et al. do not confirm the LD50 for 2,4 -DCT derived by Zoeteman et al.
In the SIDS and in HSDB, only the publication by Zoeteman is cited.
Applicant's summary and conclusion
- Executive summary:
Water from the following areas in The Netherlands was analysed in order to estimate the occurence of 2,4-dichlorotoluene:
a) Surface water of the river Rhine in Lobith, Gorinchem and Maasluis. Flow time between Lobith and Gorinchem is generally 24 h and between Lobith an Maassluis 2 - 3 days depending on stream velocity.
b) Water in lakes
c) Ground water
The detection limit was reported to be 0.01 µg/L.
Zoeteman et al. reported the results as follows: for the river Rhine, a DT50 of 1.0 day was estimated for 2,4-dichlorotoluene. This was explained with increased volatilisation and photochemical degradation by water turbulences.
For lake water, the half-lives were found to be at least by a factor of 10 higher than in the river Rhine. In ground water, 2,4-dichlorotoluene was not detected.
Linders et al reported the results in more detail, but these do not confirm the LD50 derived by Zoeteman et al.
The results were cited in the SIDS and in the HSDB data base, but only as reported by Zoeteman et al.
References: Zoeteman, 1980 and Linders, 1981
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