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 · Identifiers
Isobutyl acrylate identifiers and molecular data
Isobutyl acrylate CAS number and EC number
Isobutyl acrylate molecular formula and molecular weight
03 · GHS classification
Isobutyl acrylate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Isobutyl acrylate pictograms and signal word
Isobutyl acrylate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 3 | H226 | GHS02 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Isobutyl acrylate hazard statements (H-codes)
| 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. |
This page lists only the codes assigned to Isobutyl acrylate. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Isobutyl acrylate
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Isobutyl acrylate issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Isobutyl acrylate precautionary statements
CLP Annex VI assigns 18 precautionary statements to Isobutyl acrylate. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Isobutyl acrylate name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | изобутилов акрилат |
| Spanish español | Acrilato de isobutilo |
| Czech čeština | isobutyl-akrylát |
| Danish dansk | isobutylacrylat |
| German Deutsch | Isobutylacrylat 2-Methylpropylacrylat |
| Estonian eesti | isobutüülakrülaat |
| Greek ελληνικά | ακρυλικός ισοβουτυλεστέρας ακρυλικό ισοβουτύλιο |
| English English | isobutyl acrylate |
| French français | acrylate d'isobutyle |
| Croatian hrvatski | izobutil-akrilat |
| Italian italiano | acrilato di isobutile |
| Latvian latviešu | izobutilakrilāts |
| Lithuanian lietuvių | izobutilakrilatas |
| Hungarian magyar | izobutil-akrilát |
| Maltese Malti | akrilat tal-isobutil |
| Dutch Nederlands | isobutylacrylaat |
| Polish polski | akrylan izobutylu ester izobutylowy kwasu akrylowego |
| Portuguese português | acrilato de isobutilo |
| Romanian română | acrilat de izobutil |
| Slovak slovenčina | izobutyl-akrylát |
| Slovenian slovenščina | izobutil akrilat |
| Finnish suomi | isobutyyliakrylaatti |
| Swedish svenska | isobutylakrylat |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Isobutyl acrylate GHS label elements
Everything CLP Annex VI fixes for Isobutyl acrylate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Isobutyl acrylate
- Flammable liquid and vapour.
- Harmful if inhaled.
- Harmful in contact with skin.
- Causes skin irritation.
- May cause an allergic skin reaction.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Keep container tightly closed.
- Use explosion-proof [electrical/ventilating/lighting/…] equipment.
- Use only non-sparking tools.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- Use only outdoors or in a well-ventilated area.
- Contaminated work clothing should not be allowed out of the workplace.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF ON SKIN:
- IF INHALED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- If skin irritation occurs:
- If skin irritation or rash occurs:
- Wash with plenty of water/…
- Store in a well-ventilated place.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Isobutyl acrylate in the GHS label constructor →
07 · Health hazards
Isobutyl acrylate health hazards and exposure limits
Isobutyl acrylate hazard summary
A skin sensitizer; [Quick CPC] May polymerize exothermically on exposure to heat or if contaminated; [CAMEO] High vapor concentrations can cause mild and temporary smarting of the eyes and respiratory tract; A mild eye irritant (no worse than hand soap); Prolonged skin contact may cause reddening; [CHRIS] An irritant; Inhalation may cause asthma symptoms or difficulty breathing; Toxic by skin absorption; Harmful by inhalation; [Aldrich MSDS] Isobutyl acrylate, stabilized (UN2527) has warning of explosive polymerization; [ERG 2016]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · 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.
Isobutyl acrylate boiling point
| 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 |
Isobutyl acrylate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -61 °C (-77.8 °F) | HSDB | |
| -61.11 °C (-78 °F) | CAMEO |
Isobutyl acrylate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.8896 g/cm³ | HSDB | |
| 0.889 g/cm³ | at 20 °C | CAMEO |
Isobutyl acrylate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| 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 |
Isobutyl acrylate vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 20.68 mmHg | CAMEO | |
| 7.07 mmHg | at 25 °C | HSDB | |
| 7.07 mmHg | Haz-Map |
Isobutyl acrylate flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 30 °C (86 °F) | open cup | HSDB |
| 30 °C (86 °F) | CAMEO |
Isobutyl acrylate autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 426.67 °C (800 °F) | HSDB | |
| 340 °C (644 °F) | CAMEO |
Isobutyl acrylate lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 1.9 % by volume | in air | HSDB |
| 1.9 % by volume | CAMEO |
Isobutyl acrylate upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 8 % by volume | in air | HSDB |
| 8 % by volume | CAMEO |
Isobutyl acrylate vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 4.42 (air = 1) | HSDB |
Isobutyl acrylate odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| 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 |
Isobutyl acrylate critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 315 °C (599 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Isobutyl acrylate fire and explosion behaviour
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.
Isobutyl acrylate fire potential
Flammable when exposed to heat or flame ...
Source: Hazardous Substances Data Bank (HSDB)
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
10 · Handling and storage
Isobutyl acrylate storage 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)
Isobutyl acrylate 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)
Isobutyl acrylate 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 →
11 · Transport
Isobutyl acrylate UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
Isobutyl acrylate under UN 2527 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ISOBUTYL ACRYLATE, STABILIZED | 3 | F1 | III | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 3 is “Flammable liquids” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| Isobutyl acrylate, stabilized | 3 | III | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 3 is “Flammable and combustible liquid” (49 CFR 173.2).
12 · Questions
Isobutyl acrylate — frequently asked questions
What is the CAS number of Isobutyl acrylate?
The CAS number of Isobutyl acrylate is 106-63-8. Its EC number is 203-417-8.
What is the chemical formula of Isobutyl acrylate?
The molecular formula of Isobutyl acrylate is C7H12O2 and its molecular weight is 128.17 g/mol.
What does a Isobutyl acrylate label have to show?
Under CLP Annex VI the label for Isobutyl acrylate carries the pictograms Flame and Exclamation mark and the signal word is Warning.
Is Isobutyl acrylate flammable?
Yes. CLP Annex VI assigns Isobutyl acrylate H226 — flammable liquid and vapour. The flash point reported for it is 30 °C (86 °F), open cup (HSDB).
Is Isobutyl acrylate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Isobutyl acrylate. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the boiling point of Isobutyl acrylate?
The boiling point reported for Isobutyl acrylate is 132 °C (269.6 °F) (HSDB).
What is the melting point of Isobutyl acrylate?
The melting point reported for Isobutyl acrylate is -61 °C (-77.8 °F) (HSDB).
How should Isobutyl acrylate be stored?
CLP Annex VI assigns Isobutyl acrylate the storage statement P403. 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. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Isobutyl acrylate
Keep going: substances starting with I, or search the whole database by name, CAS number, pictogram or signal word.