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Diss Factsheets
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EC number: 911-418-6 | CAS number: 55965-84-9
- 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_environmental-fate-and-pathways.png)
Phototransformation in air
Administrative data
- Endpoint:
- phototransformation in air
- Type of information:
- (Q)SAR
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Technical Guidance Document, Chapter 3, Section 7.3.1
- Deviations:
- not applicable
- GLP compliance:
- no
- Remarks:
- Not applicable
Test material
- Test material form:
- not specified
Constituent 1
- Specific details on test material used for the study:
- STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Stability under test conditions: Aqueous Photolytic half-life is 11.1 days
- Solubility and stability of the test substance in the solvent/vehicle: Solubility in water is >16.3 g/L
Study design
- Estimation method (if used):
- PHOTOCHEMICAL REACTION WITH OH RADICALS
- Concentration of OH radicals: 6.5 x 10e5 molecules/cm3
- Reference substance:
- no
Results and discussion
Dissipation half-life of parent compoundopen allclose all
- Key result
- DT50:
- 12.7 h
- Test condition:
- Half-life due to hydroxyl radical
- Key result
- DT50:
- 29.9 h
- Test condition:
- Half-life due to nitrate radical
Degradation rate constantopen allclose all
- Key result
- Reaction with:
- OH radicals
- Rate constant:
- 0 cm³ molecule-1 d-1
- Key result
- Reaction with:
- other: NO3 radicals
- Rate constant:
- 0 cm³ molecule-1 d-1
- Transformation products:
- not measured
- Remarks:
- Potential phototransformation products are hypothesized based on previously conducted environmental fate studies, i.e. aqueous photolysis, hydrolysis, and water/soil metabolism
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- Daylight photolysis is the dominant phototransformation procedure for MIT and its potential metabolites. MIT photodegrades quickly with half-life of 12.7 hours and the half-lives of its metabolites range from 18.6-24.1 hours, based on a 24h day and a concentration of OH-radicals in atmosphere of 6.5 x 10e5 molecules/cm3. Based on a 24h day and a concentration of OH-radicals in atmosphere of 5 x 10e5 molecules/cm3 according to the TGD, the half life is 16.6 h. The effect from CMIT and its potential photodegradation products towards global warming is minimal. Therefore, CMIT and its photodegradation metabolites impose no effect to global warming.
- Executive summary:
The guideline followed is that described in the Technical Guidance Document, Chapter 3, Section 7.3.1. The phototransformation rate constant of CMIT is calculated using SAR method. Global average OH and NO3 radical concentrations in daylight and night hours are used. Potential phototransformation products of CMIT are hypothesized based on information from previous studies. The estimation is demonstrated to be accurate by comparing the rate constant of CMIT with that of six compounds which have similar bond types.
Due to relative low vapor pressure and high water solubility, the concentration of CMIT in the troposphere is expected to be low. This ensures that the photodegradation of the radicals with CMIT follows a pseudo first-order kinetics required by SAR calculation method. Due to the presence of nitrogen and sulfur bonds, CMIT has a large phototransformation rate constant. The parent compound quickly photodegrades during the daylight with half-life of 12.7 hours. Due to the presence of nitrogen and sulfur bonds, all potential photodegradation products are expected to be very reactive to photodegradation with half-lives ranging from 18.6 -24.1 hours.
Daylight photolysis is the dominant phototransformation procedure for CMIT and its potential metabolites. CMIT photodegrades quickly with half-life of 12.7 hours and the half-lives of its metabolites range from 18.6-24.4 hours , based on a 24h day and a concentration of OH-radicals in atmosphere of 6.5 x 10e5 molecules/cm3. Based on a 24h day and a concentration of OH-radicals in atmosphere of 5 x 10e5 molecules/cm3 according to the TGD, the half life is 16.6 h. The effect from CMIT and its potential photodegradation products towards global warming is minimal. Therefore, CMIT and its photodegradation metabolites impose no effect to global warming.
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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