Substance profile
Isobutyl acrylate
Isobutyl acrylate is a clear liquid with sharply odorous.
01 · Identification
What Isobutyl acrylate is
Isobutyl acrylate is a clear liquid with sharply odorous. Its molecular formula is C7H12O2 and its molecular weight is 128.17 g/mol. It boils at 132 °C, melts at -61 °C, is soluble in water.
Under the GHS it carries the signal word Warning. It is classed as flammable agents - 3rd degree.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H226 | Flammable liquid and vapour. |
| H332 | Harmful if inhaled. |
| H312 | Harmful in contact with skin. |
| H315 | Causes skin irritation. |
| H317 | May cause an allergic skin reaction. |
Precautionary statements: P210, P233, P241, P242, P260, P261, P264, P271, P272, P280, P302, P304, P312, P313, P332, P333, P352, P403
03 · Physical and chemical properties
Isobutyl acrylate properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 132 °C (269.6 °F) | HSDB | |
| 132.22 °C (270 °F) | at 760 mmHg | CAMEO | |
| 62 °C (143.6 °F) | range, midpoint shown, at 51 mmHg (reduced pressure) | HSDB | |
| Melting point | -61 °C (-77.8 °F) | HSDB | |
| -61.11 °C (-78 °F) | CAMEO | ||
| Density | 0.8896 g/cm³ | HSDB | |
| 0.889 g/cm³ | at 20 °C | CAMEO | |
| Solubility | Soluble in ethanol, ether and methanol | HSDB | |
| Slightly soluble (NTP, 1992) | CAMEO | ||
| In water, 2,000 mg/L at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 20.68 mmHg | CAMEO | |
| 7.07 mmHg | at 25 °C | HSDB | |
| 7.07 mmHg | Haz-Map | ||
| Flash point | 30 °C (86 °F) | open cup | HSDB |
| 30 °C (86 °F) | CAMEO | ||
| Autoignition temperature | 426.67 °C (800 °F) | HSDB | |
| 340 °C (644 °F) | CAMEO | ||
| Lower explosive limit (LEL) | 1.9 % by volume | in air | HSDB |
| 1.9 % by volume | CAMEO | ||
| Upper explosive limit (UEL) | 8 % by volume | in air | HSDB |
| 8 % by volume | CAMEO | ||
| Vapor density | 4.42 (air = 1) | HSDB | |
| Odor threshold | 2.00X10-3 ppm (odor detection in air, purity not specified) | HSDB | |
| 9.00X10-3 ppm (odor recognition in air, purity not specified) | HSDB | ||
| Odor Threshold Low: 0.002 [ppm] | Haz-Map | ||
| Critical temperature and pressure | 315 °C (599 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on Isobutyl acrylate
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Physical behaviour
Liquid heat capacity= 0.431 BTU/lb-F @ 70 °F; Liquid thermal conductivity= 1.048 BTU-in/hr-sq ft-F at 70 °F; Saturated vapor density= 0.00494 lb/cu ft @ 70 °F; Ideal gas heat capacity= 0.371 BTU/lb-F @ 75 °F
Source: HSDB
05 · Handling and storage
Storing and handling Isobutyl acrylate
Storage conditions
Prior to working with this chemical you should be trained on its proper handling and storage. Before entering a confined space where hexanol may be present, check to make sure that an explosive concentration does not exist. Store in an explosion-proof cool area. Protect for air and light for long-term storage. Where possible, automatically pump liquid from drums or other storage containers to process containers.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Forms explosive mixture with air. Heat and contamination may cause polymerization. Reacts with strong acids, aliphatic amines, alkanolamines.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
ISOBUTYL ACRYLATE is an acrylate ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Polymerizes readily in the presence of heat and light generating much heat; reacts with strong oxidants. REF [Handling Chemicals Safely, 1980. p. 235].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Isobutyl acrylate in the storage compatibility matrix →