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Diss Factsheets
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EC number: 203-271-5 | CAS number: 105-11-3
- 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
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- Endpoint:
- appearance / physical state / colour
- Type of information:
- experimental study
- Adequacy of study:
- weight of evidence
- Study period:
- 19-09-1991 to 16-10-1991
- Reliability:
- 4 (not assignable)
- Rationale for reliability incl. deficiencies:
- other: Adequately documented guideline study performed, non-GLP. All relevant validity criteria were met. Testing conducted according to international transport and supply/use regulations and manual and criteria.
- Reason / purpose for cross-reference:
- reference to same study
- Principles of method if other than guideline:
- Visual observation of physical state and appearance by the testing laboratory.
- GLP compliance:
- yes
- Specific details on test material used for the study:
- The physical state and appearance of the test item were evaluated by visual observation. The test item was determined to be a light gray/brown powder.
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- solid: particulate/powder
- Colour:
- light gray/brown
- Substance type:
- organic
- Conclusions:
- The physical state and appearance of the test item were evaluated by visual observation. The test item was determined to be a light gray/brown powder.
- Executive summary:
The appearance of the test item has been determined as:
Form: Solid (powder)
Colour: light gray/brown
Reference
Description of key information
weight of evidence: state of the substance at 20 °C and 101.3 kPa: light gray/brown or brown solid, powder visual observation, 2018
Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- solid
Additional information
The weight of evidence is that the test item is a solid, and can be variously described as a brown powder (anon., 2018), a light gray/brown solid powder (anon., 1991) a dark gray to tan solid, and/or a grey to dark brown aqueous press-cake or dark brown powder (CRC, 1979 and IARC, 1982). The colour of the substance may vary in available sources. No significant odour has been reported in available sources. The different descriptions are dependent upon degree of processing and/or water content. Typically, the substance is a light gray/brown or brown solid (powdered solid or bulk solid).
The test item has a melting point of > 237 °C at ca. 101.3 kPa in an available melting point test to OECD TG 102 and EU Method A.1 under GLP. No definitive melting point or range could be determined based on test item decomposition at ca. 237 °C. The test item has not been observed or is not expected to be a liquid at < 20 °C.
The test item under the CLP Regulation (EC) 1272/2008: Annex 1, section 1 concerning the definition of gases, liquids and solids, does not meet the criteria as a gas or liquid. Therefore should be considered as a solid. For the classification procedure under Regulation (EC) 1272/2008 expert judgment indicates that the intrinsic properties of the test item indicate that the test item would be tested as a solid and for specific evaluations (e.g. Flammability – ‘pasty substances’) the test item would also generally be tested under the testing strategies concerning solids. As applicable.
References:
1. UN Transport of Dangerous Goods Manual of Tests and Criteria, Sixth Edition (2015)
2. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, July 2017)
3. REACH Regulation (EC) 1907/2006, Annex VII, section 7.1
4. CLP Regulation (EC) 1272/2008, Annex I, section 1
5. ECHA Guidance on Application on the CLP Criteria, section 2.0 (v5.0, July 2017)
6. Anon., Melting Point study, OECD TG 102, 2018
7. Anon., Flammable Solids study, UN Manual of Tests and Criteria: Test N.1, 1991
8. Weast, R.C., ed. (1979) CRC Handbook of Chemistry and Physics, 60th ed. page C-204
9. IARC monographs on the evaluation of the carcinogenic risk of chemicals to humans, volume 28 and 29, (1982)
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.