Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- Base Chemicals Functions
- CAS No.
- 106-63-8
- EC No.
- 203-417-8
- Technologies
- Product Families
- Structure
Applications & Uses
- Markets
- Applications
- Base Chemicals End Uses
Properties
- Physical Form
- Odor
- like ester
- Physico-Chemical Properties
| Value | Units | Test Method / Conditions | |
| Melting / Freezing Point | -61 | °C | — |
| Boiling Point (1013 hPa) | 132 | °C | — |
| Relative Density (20°C) | 0.8896 | g/cm3 | — |
| Vapor Pressure (25°C) | 10 | hPa | — |
| Water Solubility (25°C) | 1.8 | g/l | — |
| Partition coefficient n-octanol/water (log value) (25°C) | 2.38 | — | — |
| Flash Point | 30 | °C | — |
| Flammability | Flammable upon ignition. | — | — |
| Explosive Properties | non explosive | — | — |
| Self-ignition Temperature (1013 hPa) | 350 | °C | — |
| Viscosity (21.1°C) | 0.822 | mPa.s | — |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Human Health Effects
Acute Toxicity
Iso-butyl acrylate is of low toxicity after a single ingestion. iBA is of moderate toxicity after a short-term inhalation and after short-term skin contact.
- Oral: LD50 = 4895 mg/kg bw (rat)
- Dermal: LD50 ca. 793 – 4000 mg/kg bw (rabbit)
- Inhalation: LC50 = 10.5 mg/L (rat, 4h)
Irritation/Sensitization
Iso-butyl acrylate is irritating respiratory system and skin. iBA is suspected to be a skin sensitizer, based on the structural similarity to n-butyl acrylate.
Repeated Dose Toxicity
No repeated dose toxicity studies are available with iBA; therefore data of the structural analog n-butyl acrylate are taken to assess toxicity after repeated exposure.
Safety & Health
- Environmental Fate
In contact with water, Isobutyl acrylate will hydrolyze slowly. Photodegradation in air will proceed slowly, too. In water, sewage treatment plants and soil rapid degradation is expected, since i-BA was readily biodegradable in an OECD 310-Screening test. Based on an experimental log Pow and calculated BCF, a potential for bioaccumulation is not to be expected. Adsorption of isobutyl acrylate to the solid soil phase is not expected.
Fugacity model calculation (Mackay Level I) revealed the atmosphere as the main target compartment for distribution which is also indicated by the substance's physicochemical properties.
- Ecotoxicity
When evaluated as a group, the acrylate esters have similar ecotoxicity data. LC50 values in freshwater fish ranged from 1.81 and 5.2 mg/L, EC50 values in freshwater invertebrates (Daphnia magna) were between 1.3 and 8.74 mg/L, and EC50 values in freshwater algae were between 1.71 and 14.6 mg/L, respectively. Thus, effect values were all in the same range of concentrations with Daphnia magna as the most sensitive freshwater species by a narrow margin. A 21-day chronic life-cycle study with Daphnia magna is available with ethyl acrylate with a respective NOEC of 0.19 mg/L, and another with n-butyl acrylate with a NOEC of 0.136 mg/L. In addition, several NOEC values from studies in algal species are available ranging from 0.45 to 3.85 mg/L.