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EC number: 257-182-1 | CAS number: 51410-72-1
- 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
Endpoint summary
Administrative data
Description of key information
Additional information
MAPTAC (50% aqueous solution) is reported to be a yellowish, almost odourless liquid at 20°C and 1013 hPa.
The melting point of MAPTAC is 54°C at 1018 hPa. No boiling point could be determined for MAPTAC due to decomposition between 230 and 300°C at 1018 hPa.
The density of MAPTAC (50% aqueous solution) is reported to be 1.0589 g/cm³ at 20°C.
In accordance with column 2 of REACH regulation annex VII, a granulometry test does not need to be conducted as the substance is used only in aqueous solution.
A study on vapour pressure is technically not feasible (REACH Regulation, Annex XI, 2): The calculated vapour pressure of 2.52E-07 Pa at 25°C (Mackay Method, Epiwin 4.1) is outside of the specifications of the usual methods. In addition, the substance is manufactured and handled as a solution in water, therefore only the vapour pressure of the solvent (water) would be measured. The vapour pressure is below the lowest value used by Chesar for calculation (0.01 Pa), thus 0.001 Pa was used as key value for chemical safety assessment.
A study on the n-octanol/water partition coefficient (log Kow) is technically not feasible (REACH Regulation, Annex XI, 2; Annex VII, 7.8, column II) as MAPTAC fully dissociates in water. The log Kow of MAPTAC estimated by calculation is -2.58 (Epiwin 4.1 KOWWIN v1.68).
MAPTAC is reported to be miscible with water; a calculation of water solubility based on the density of 1.0589 g/cm³ results in a water solubility of ca. 1059 g/mL (> 1000000 g/L).
In accordance with column 2 of REACH regulation annex VII, surface tension testing does not need to be conducted. Based on structure, no surface activity is expected. The test substance is not used as detergent.
No flash point was detected for MAPTAC: During the preliminary test the sample started boiling at a temperature of about 100°C due to the high percentage of water. For this reason the analysis had to be aborted, a flash point was not detected up to this temperature.
The self-ignition temperature of MAPTAC (50% aqueous solution) is reported to be 370°C at 1004 hPa.
A study on flammability is technically not feasibly (REACH regulation Annex XI, 2) as the substance manufactured and handled as a solution in water. And according to REACH Regulation (Annex XI, 1.), the study on flammability does not need to be conducted if the available data are sufficient for assessment. For the substance tests on flash point and auto-ignition are available. Pyrophoricity and flammability on contact with water are not expected based on a consideration of the structure of the substance.
In accordance with column 2 of REACH regulation annex VII, explosive properties testing does not need to be conducted as there are no chemical groups associated with explosive properties in the molecule.
In accordance with column 2 of REACH regulation annex VII, oxidising properties testing does not need to be conducted on the basis of chemical structure.
In accordance with column 1 of REACH regulation annex IX, stability in organic solvents testing is not required as stability of the substance is not considered critical. The test substance has no particular reactivity towards typical solvents and is not used in solution.
According to REACH Annex IX, 7.16, column 2 the testing of the dissociation constant is scientifically not justified, as substance is a zwitterion which has no acid-base properties (at environmental relevant pH) and which is fully dissociated in aqueous solution into a quaternary ammonium ion and the chloride counter ion.
The kinematic viscosity of MAPTAC (50% aqueous solution) is reported to be 8.17 mm²/s.
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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