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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
![](https://poisoncentres.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_physical-and-chemical-properties.png)
Endpoint summary
Administrative data
Description of key information
Additional information
Table 1, Physical and Chemical Properties of 2-methylbutyl acrylate (CAS# 44914-03-6) |
||||||
Property |
IUCLID Section number |
REACh Column 1 number |
Value |
Data source |
Klimisch rank |
Note |
Appearance/physical state/color |
4.1 |
7.1 |
Clear, colourless liquid |
Experimental |
1 |
|
Melting point/Freezing point |
4.2 |
7.2 |
≤-75 °C |
Experimental |
1 |
|
Boiling point |
4.3 |
7.3 |
161.7 °C at 101.3 kPa |
Experimental |
2 |
|
Density |
4.4 |
7.4 |
0.8886 g/cm3 at 25 °C |
Experimental |
2 |
|
Particles size distribution (Granulometry) |
4.5 |
7.14 |
Not applicable |
Waiving argument |
N/A |
Substance is a liquid |
Vapour pressure |
4.6 |
7.5 |
1.7 hPa at 20 °C |
Experimental |
2 |
|
Partition coefficient (log Kow) |
4.7 |
7.8 |
2.90 |
Experimental |
1 |
|
Water Solubility |
4.8 |
7.7 |
316 mg/L at 23.1 °C |
Experimental |
2 |
|
Surface tension |
4.10 |
7.6 |
Not applicable |
Waiving argument |
N/A |
Surfactancy not expected or desired property of substance |
Flash point |
4.11 |
7.9 |
49 °C |
Experimental |
1 |
|
Autoflammability |
4.12 |
7.12 |
275 °C at 102.0 - 102.8 kPa |
Experimental |
1 |
|
Flammability |
4.13 |
7.10 |
Flammable liquid 3 based on Flash Point. No emanation of flammable gasses or spontaneous ignition on contact with water or air |
Waiving argument |
N/A |
Flash point = 49 °C, but no emanation of flammable gasses or spontaneous ignition |
Explosiveness |
4.14 |
7.11 |
Not applicable |
Waiving argument |
N/A |
Consideration based on structure |
Oxidizing properties |
4.15 |
7.13 |
Not applicable |
Waiving argument |
N/A |
Consideration based on structure |
Stability in organic solvents and identity of relevant degradation products |
4.17 |
7.15 |
Not applicable |
Waiving argument |
N/A |
Stability not regarded to be critical |
Dissociation constant |
4.21 |
7.16 |
Not applicable |
Waiving argument |
N/A |
No dissociable groups |
Viscosity |
4.22 |
7.17 |
0.998 mPa s at 25 °C |
Experimental |
2 |
|
Result from studies of n-butyl acrylate (n-BA, CAS# 141-32-2) will be used extensively in read-across to fill gaps regarding toxicity in the 2-methylbutyl acrylate data set. Read-across from n-BA and isooctyl acrylate (CAS# 29590-42-9) will also be used to support existing ecotoxicology and fate data. To help justify read-across of data, the following physical-chemical data are provided:
Data matrix – Analog approach |
|||
Target substance |
Source substance (1) |
Source substance (2) |
|
CHEMICAL NAME |
2-methylbutyl acrylate |
n-butyl acrylate |
Isooctyl acrylate |
CAS# |
44914-03-6 |
141-32-2 |
29590-42-9 |
Molecular formula |
C8H14O2 |
C7H12O2 |
C11H20O2 (on average) |
Molecular Weight |
142.2 |
128.2 |
184.3 (on average) |
PHYSICO-CHEMICAL DATA |
|||
Melting Point |
Experimental: ≤ -75 °C |
Not available |
Experimental: < -90 °C at 1004 hPa |
Boiling Point |
Experimental: 161.7 °C at 1013hPa |
Experimental: 147 °C at 1013hPa |
Experimental: 196.8 °C at 1016 hPa |
Density |
Experimental: 0.8886 g/cm3 at 25 °C |
Experimental: 0.9 g/cm3 at 20.0 °C |
Experimental: 0.885 g/cm3 at 20.0 °C |
Vapour Pressure |
Experimental: 1.7 hPa at 20°C |
Experimental: 5 hPa at 22.2°C |
Experimental: 1 hPa at 20 °C |
Partition Coefficient (log KOW) |
Experimental: 2.9 |
Experimental: 2.38 (at 25°C) |
Experimental: 4.5 - 4.7 |
Water Solubility |
Experimental: 316 mg/L at 23 °C |
Not available |
Experimental: 12.44 mg/L at 23.1 °C |
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