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Diss Factsheets
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EC number: 256-170-3 | CAS number: 44914-03-6
- 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
2-MBA is an intermediate used as a monomer which is further polymerized into various polymer matrices in the manufacture of various coatings, films, tapes and adhesive formulations. It is a very reactive monomer and is rapidly polymerized in its uses. All 3M manufacture of 2-MBA in the EU will be at a location where biological wastewater treatment coupled with carbon treatment is applied to wastewater. The industrial sludge from the manufacturing process is incinerated and therefore direct exposure to soil from application of sewage sludge will not occur.
2-MBA is volatile (vapor pressure of 0.17 kPa at 20 °C) and has an appreciable water solubility (316 mg/L at 23 °C). A Henry's Law constant of 95 Pa*m³/mol at 23 °C, calculated using experimental values, indicates a moderate tendency to volatilize from aquatic systems or moist environments. The vapor pressure indicates that 2-MBA released to the atmospheric compartment will remain in the vapor phase. Vapor-phase 2-MBA is expected to degrade quickly due to indirect photolysis, with a modeled half-life of 1.04 days.
2-MBA is readily biodegradable. Abiotic hydrolysis is not expected to contribute significantly to fate in aquatic systems or wastewater treatment systems. Material released to wastewater treatment systems or surface waters will be rapidly degraded.
2-MBA has an experimentally determined log Kow of 2.90 by a shake-flask method, and therefore by column 2 of Annex IX bioconcentration need not be tested. Furthermore, metabolism of acrylate esters in mammals is well studied. It is shown that metabolism is via ester hydrolysis and is nearly complete. Acrylate esters are rapidly detoxified and eliminated. Therefore, bioaccumulation of 2-MBA is not expected.
The log adsorption coefficient (log Koc) was calculated from log Kow, providing a value of Koc = 2.45. This indicates that 2-MBA would have a medium mobility in soil and a partial tendency to bind to organic materials in soils, soils and sediments. Though readily biodegradable, reduced water availability relative to aquatic systems and sorption of 2-MBA to soil organic matter may to a degree slow the process of removal.
Summary: 2-MBA is quite reactive and will be polymerized rapidly in industrial applications. Most emissions will be to air rather than to water. 2-MBA released to the atmosphere will be rapidly destroyed by indirect photolysis. Any 2-MBA released to water will be rapidly biodegraded. Releases to water are expected to be low, and 2-MBA is not expected to bioconcentrate to levels of concern. 2-MBA will likely partially sorb to soil and sediments and be biodegraded more slowly than in the aquatic compartment. Releases to soil are expected to be low. 2-MBA will be phototransformed in the atmosphere and/or biodegraded in terrestrial and aquatic systems.
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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