Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 274-625-4 | CAS number: 70495-37-3
- 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
Auto flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- relative self-ignition temperature (solids)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 2019-06-11 to 2020-08-03
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: VDI 2263, sheet 1, Grewer Oven
- Version / remarks:
- 1990
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EU Method A.16 (Relative Self-Ignition Temperature for Solids)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: UN Manual of Tests and Criteria: Appendix 6 Screening Procedures, Division 4.2: Substances which may be liable to spontaneous combustion
- Version / remarks:
- 7th edition, New York and Geneva, 2019
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Key result
- Relative self-ignition temperature:
- ca. 180 °C
- Conclusions:
- The pure test item indicated self-ignition at atmospheric pressure starting at a temperature of 180 °C.
- Executive summary:
A study according to UN Manual of Tests and Criteria, Devision 6.2 and VDI 2263, sheet 1 was performed to investigate the relative self-ignition of the test item. The test item was filled in a small wire basket of a volume of 8 cm3 and this wire-basket was placed into the oven. The temperature of the oven was increased with a constant heating rate (1.2 K/min) in an air stream of 100 to 120 L per hour and the temperature of the sample was recorded as a function of time at intervals of 10 seconds. The self-ignition behaviour of the pure test item was indicated as a deviation between sample temperature and reference temperature.
In the investigation of self-ignition in the Grewer Oven for the pure test item a first small exothermic effect was detected starting at a temperature of 180 °C (2 K above the corresponding temperature of the reference material). A second small exothermic effect was detected starting at temperature of 225 °C which led to a maximum temperature of approx. 245 °C. At 265 °C an endothermic effect was observed followed by a third exothermic effect starting at a temperature of 290 °C. In the region 370 – 380 °C another endothermic effect was detected. A fourth exothermic effect was observed starting at 380 °C which led to a maximum temperature of approx. 415 °C. A black residue remained in the wire basket after the test. The relative self-ignition of the test item was determined to be at ca. 180 °C.
Reference
In the investigation of self-ignition in the Grewer Oven for the pure test item a first small exothermic effect was detected starting at a temperature of 180 °C (2 K above the corresponding temperature of the reference material). A second small exothermic effect was detected starting at temperature of 225 °C which led to a maximum temperature of approx. 245 °C and a deviation from the temperature of the reference item of only 3 K. At 265 °C an endothermic effect was observed followed by a third exothermic effect starting at a temperature of 290 °C which leads to a temperature of 3 K above the temperature of the reference item. In the region 370 – 380 °C another endothermic effect was detected. A fourth exothermic effect was observed starting at 380 °C which led to a maximum temperature of approx. 415 °C (6 K above the corresponding temperature of the reference material). A black residue remained in the wire basket after the test.
For the test item in mixture with Kieselguhr a small exothermic process was detected starting at 150 °C. At 170 °C a first endothermic effect and at 250 °C a second endothermic effect were observed. A third endothermic effect was detected starting at a temperature of 330 °C followed by an exothermic effect starting at a temperature of approx. 380 °C which led to a maximum temperature of approx. 413 °C (4 K above the corresponding temperature of the reference material).
Table 1: Results of the screening test for self-ignition in the Gewer-Oven
Experiment |
Onset self- |
Maximum temperature / °C |
Pure test item |
Approx. 180 |
< 2 K above reference |
Test item in mixture |
Approx. 150 |
< 2 K above reference |
Description of key information
The pure test item indicated self-ignition at atmospheric pressure starting at a temperature of 180 °C.
Key value for chemical safety assessment
- Autoflammability / Self-ignition temperature at 101 325 Pa:
- 180 °C
Additional information
A study according to UN Manual of Tests and
Criteria, Devision 6.2 and VDI 2263, sheet 1 was performed to
investigate the relative self-ignition of the test item. The test item
was filled in a small wire basket of a volume of 8 cm3 and
this wire-basket was placed into the oven. The temperature of the oven
was increased with a constant heating rate (1.2 K/min) in an air stream
of 100 to 120 L per hour and the temperature of the sample was recorded
as a function of time at intervals of 10 seconds. The self-ignition
behaviour of the pure test item was indicated as a deviation between
sample temperature and reference temperature.
In the investigation of self-ignition in the Grewer Oven for the pure
test item a first small exothermic effect was detected starting at a
temperature of 180 °C (2 K above the corresponding temperature of the
reference material). A second small exothermic effect was detected
starting at temperature of 225 °C which led to a maximum temperature of
approx. 245 °C. At 265 °C an endothermic effect was observed followed by
a third exothermic effect starting at a temperature of 290 °C. In the
region 370 – 380 °C another endothermic effect was detected. A fourth
exothermic effect was observed starting at 380 °C which led to a maximum
temperature of approx. 415 °C. A black residue remained in the wire
basket after the test. The relative self-ignition of the test item was
determined to be at ca. 180 °C.
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.