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EC number: 202-016-5 | CAS number: 90-80-2
- 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
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not thermally stable, but presents only a low thermal stability hazard.
Additional information
Three studies are available which assess the thermal stability of the substance.
The key study was sponsored by Roquette Freres and carried out in 2005 by INERIS (Tribouilly B) according to a method equivalent or similar to OECD 113 (Screening Test for Thermal Stability and Stability in Air), but using a 6.4g sample size, which is well in excess of the guideline 5-50 mg. The test showed an initial endotherm from around 140°C prior to any loss of mass. Coincident with the onset of a mild exotherm, loss of mass began around 180°C, with 75% of the sample mass being lost by ca. 200°C, when an artifact obscured the mass curve. At ca. 350°C the artifact suddenly ended and the mass curve dropped to zero, confirming that all the sample had been lost. At no time did the difference in temperature between the sample and the control exceed 50°C, i.e., thermal runaway did not occur.
The first supporting study was sponsored by Jungbunzlauer S.A. and carried out in 1998 by INERIS (Loyer C) according to a method equivalent or similar to OECD 113 (Screening Test for Thermal Stability and Stability in Air), but using a 2.7g sample size, which is well in excess of the guideline 5-50 mg. The test showed an initial endotherm from around 140°C prior to any loss of mass. Coincident with the onset of an exotherm, loss of mass began around 190°C, with 90% of the sample mass being lost by ca. 260°C, when an artifact obscured the mass curve. At ca. 295°C the artifact suddenly ended and the mass curve indicated 6-7% remaining. Consistent slow loss of mass continued until 4-5% remained at 400°C. Two brief exothermic peaks at around 400°C (ca. +62°C) and 440°C (ca. +93°C) coincided with the loss of the remaining 4-5% mass, predominantly during the later event. Thermal runaway (i.e., difference in temperature between the sample and the control exceeds 50°C) occurred at around 400°C, possibly just below this temperature.
The second supporting study was sponsored by Jungbunzlauer S.A. and carried out in 2008 by arm-alysis (Arm R, Klingelhoefer R) according to a method equivalent or similar to OECD 113 (Screening Test for Thermal Stability and Stability in Air). A major transformation occurred at 164ºC, the enthalpy of the transformation was 190 mJ. The sample weight loss was 79.7% at 213ºC, further weight loss 17.3% above 600ºC; the residue was 3.1%.
All three studies support the conclusion that the substance is not thermally stable, undergoing an initial endothermic event around 140-180ºC, followed by exothermic decomposition from 180-190ºC. The vast majority of the sample mass is lost by around 260ºC, without thermal runaway. Thermal runaway was only detected from around 400ºC, and in association with the loss of the final 4-5% sample mass. On this basis, the substance is considered to present a low thermal stability hazard.
Justification for classification or non-classification
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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