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Diss Factsheets
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EC number: 260-252-4 | CAS number: 56539-66-3
- 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
Endpoint summary
Administrative data
Description of key information
Phototransformation in air:
Indirect photolysis of MMB is estimated with a degradtion of 50% in 1.1 days under 12h irridation (indirect photolysis) calulated with SRC-AOPWIN v1.90. The estimated rate constant in reaction with OH radicals is estimated with 9.96E-12 cm3/ molecule*s.
Hydrolysis:
MMB is stable in water having a half-life of more than a year at pH 4, 7 and 9 and 25°C.
Biodegradation:
MMB is considered readily biodegradable in water.
Further tests on biodegradation in surface waters, sediments and soils are therefore waived and exposure of sediments or soils to MMB is not expected due to a low adsorption potential (log Koc = 0.41).
Bioaccumulation:
MMB has an estimated log BCF of 0.50 (BCF = 3.16 L/kg ww) which indicated no potential for bioaccumulation in aquatic species, especially fish.
Adsorption / desorption and Henry´s law constant:
QSAR calculations indiate a log Koc value of 0.41. Therefore MMB is not expected to bind to soils but rather, if released, will partition to the water compartment. Henry's law constant is reported as 0.1 Pa x m3/mol. Distribution of MMB which is emitted to water has been modelled. It is not expected that MMB will end in the soil compartment.
Distribution in environmental compartements:
Assuming as a most likely case a 100% release of MMB to water, the McKay Level III calculation predicts 10.1% emitted to air and 0.4 % remaining in the sediment. The model does not predict any emissons to soil.
Additional information
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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