Substance profile
1-isopropyl-4-methylbenzene
1-isopropyl-4-methylbenzene is a colorless transparent liquid with a sweetish aromatic odor.
01 · Identification
What 1-isopropyl-4-methylbenzene is
1-isopropyl-4-methylbenzene is a colorless transparent liquid with a sweetish aromatic odor. Its molecular formula is C10H14 and its molecular weight is 134.22 g/mol. It boils at 177 °C, melts at -68.9 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
1-isopropyl-4-methylbenzene identifiers and molecular data
1-isopropyl-4-methylbenzene CAS number and EC number
1-isopropyl-4-methylbenzene molecular formula and molecular weight
Other names for 1-isopropyl-4-methylbenzene
- p-cymene
03 · GHS classification
1-isopropyl-4-methylbenzene hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
1-isopropyl-4-methylbenzene pictograms and signal word
1-isopropyl-4-methylbenzene hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 3 | H226 | GHS02 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 3 | H331 | GHS06 |
| Aspiration hazard GHS chapter 3.10 | Category 1 | H304 | GHS08 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 2 | H411 | GHS09 |
1-isopropyl-4-methylbenzene hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H226 | Flammable liquid and vapour. |
| H331 | Toxic if inhaled. |
| H304 | May be fatal if swallowed and enters airways. |
| H411 | Toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to 1-isopropyl-4-methylbenzen…. 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 1-isopropyl-4-methylbenzen…
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 1-isopropyl-4-methylbe… 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
1-isopropyl-4-methylbenzene precautionary statements
CLP Annex VI assigns 12 precautionary statements to 1-isopropyl-4-methylbenzen…. 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.
Disposal
What has to happen to the contents and the empty container.
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
1-isopropyl-4-methylbenzene 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 | 1-изопропил-4-метилбензен p -цимен |
| Spanish español | 1-Isopropil-4-metilbenceno p -cimeno |
| Czech čeština | 1-isopropyl-4-methylbenzen p -cymen |
| Danish dansk | 1-isopropyl-4-methylbenzen p -cymen |
| German Deutsch | 1-Isopropyl-4-methylbenzol p -Cymol |
| Estonian eesti | 1-isopropüül-4-metüülbenseen p -tsümeen |
| Greek ελληνικά | 1-ισοπροπυλο-4-μεθυλοβενζόλιο π-κυμένιο |
| English English | 1-isopropyl-4-methylbenzene p -cymene |
| French français | 1-isopropyl-4-méthylbenzène p -cymène |
| Croatian hrvatski | 1-izopropil-4-metilbenzen p -cimen |
| Italian italiano | 1-isopropil-4-metilbenzene p -cimene |
| Latvian latviešu | 1-izopropil-4-metilbenzols p -cimēns |
| Lithuanian lietuvių | 1-izopropil-4-metilbenzenas p -cimenas |
| Hungarian magyar | 1-izopropil-4-metilbenzol p -cimén |
| Maltese Malti | 1-isopropil-4-metilbenżen p -ċimen |
| Dutch Nederlands | 1-isopropyl-4-methylbenzeen p -cymeen |
| Polish polski | 1-izopropylo-4-metylobenzen p -cymen |
| Portuguese português | 1-isopropil-4-metilbenzeno p -cimeno |
| Romanian română | 1-izopropil-4-metilbenzen p -cimen |
| Slovak slovenčina | 1-izopropyl-4-metylbenzén, p -cymén |
| Slovenian slovenščina | 1-izopropil-4-metilbenzen p -cimen |
| Finnish suomi | 1-isopropyyli-4-metyylibentseeni p -symeeni |
| Swedish svenska | 1-isopropyl-4-metylbensen p -cymen |
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
1-isopropyl-4-methylbenzene GHS label elements
Everything CLP Annex VI fixes for 1-isopropyl-4-methylbenzen…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
1-isopropyl-4-methylbenzene
- Flammable liquid and vapour.
- Toxic if inhaled.
- May be fatal if swallowed and enters airways.
- Toxic to aquatic life with long lasting effects.
- 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.
- Use only outdoors or in a well-ventilated area.
- Avoid release to the environment.
- IF INHALED:
- Immediately call a POISON CENTER/doctor/…
- Collect spillage.
- Store in a well-ventilated place.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 1-isopropyl-4-methylbenzen… in the GHS label constructor →
07 · Health hazards
1-isopropyl-4-methylbenzene health hazards and exposure limits
1-isopropyl-4-methylbenzene hazard summary
A skin and eye irritant; Defats the skin; [ICSC]; A mild skin and eye irritant; [CAMEO] A skin and eye irritant; [eChemPortal: ERMA] An irritant; [MSDSonline]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
1-isopropyl-4-methylbenzene 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.
1-isopropyl-4-methylbenzene boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 177.1 °C (350.8 °F) | HSDB | |
| 177.22 °C (351 °F) | at 760 mmHg | CAMEO | |
| 177 °C (350.6 °F) | ICSC |
1-isopropyl-4-methylbenzene melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -68.9 °C (-92 °F) | HSDB | |
| -67.89 °C (-90.2 °F) | CAMEO | ||
| -68 °C (-90.4 °F) | ICSC |
1-isopropyl-4-methylbenzene density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.85 g/cm³ | ICSC | |
| 0.8573 g/cm³ | at 20 °C | HSDB | |
| 0.857 g/cm³ | at 20 °C | CAMEO |
1-isopropyl-4-methylbenzene solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Miscible with ethanol, acetone, benzene, carbon tetrachloride and petroleum ether | HSDB | |
| In water, 23.4 mg/L at 25 °C | at 25 °C | HSDB | |
| Solubility in water, g/100ml at 25 °C: 0.002 | at 25 °C | ICSC |
1-isopropyl-4-methylbenzene vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1.5001 mmHg | at 20 °C | ICSC |
| 1.5 mmHg | at 25 °C | HSDB |
1-isopropyl-4-methylbenzene flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 47.22 °C (117 °F) | HSDB |
1-isopropyl-4-methylbenzene autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 436 °C (816.8 °F) | From table | HSDB |
| 436.11 °C (817 °F) | CAMEO | ||
| 435 °C (815 °F) | ICSC |
1-isopropyl-4-methylbenzene lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 0.7 % by volume | CAMEO |
1-isopropyl-4-methylbenzene upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 5.6 % by volume | CAMEO | |
| 5.6 % by volume | at 100 °C | HSDB |
1-isopropyl-4-methylbenzene vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 4.62 (air = 1) | HSDB |
1-isopropyl-4-methylbenzene critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 378.85 °C (713.9 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
1-isopropyl-4-methylbenzen… 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.
1-isopropyl-4-methylbenzene fire potential
Flammable liquid.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
1-isopropyl-4-methylbenzene storage and handling
1-isopropyl-4-methylbenzene safe storage
Fireproof.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
1-isopropyl-4-methylbenzene storage conditions
Safe storage: Fireproof.
Source: Hazardous Substances Data Bank (HSDB)
1-isopropyl-4-methylbenzene incompatible materials
Reacts with oxidants. Attacks rubber.
Source: Hazardous Substances Data Bank (HSDB)
1-isopropyl-4-methylbenzene reactivity
Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons, such as P-CYMENE, and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 1-isopropyl-4-methylbenze… in the storage compatibility matrix →
11 · Questions
1-isopropyl-4-methylbenzene — frequently asked questions
What is the CAS number of 1-isopropyl-4-methylbenzene?
The CAS number of 1-isopropyl-4-methylbenzene is 99-87-6. Its EC number is 202-796-7.
What is the chemical formula of 1-isopropyl-4-methylbenzene?
The molecular formula of 1-isopropyl-4-methylbenzene is C10H14 and its molecular weight is 134.22 g/mol.
What does a 1-isopropyl-4-methylbenzene label have to show?
Under CLP Annex VI the label for 1-isopropyl-4-methylbenzene carries the pictograms Flame, Skull and crossbones, Health hazard and Environment and the signal word is Danger.
Is 1-isopropyl-4-methylbenzene flammable?
Yes. CLP Annex VI assigns 1-isopropyl-4-methylbenzene H226 — flammable liquid and vapour. The flash point reported for it is 47.22 °C (117 °F) (HSDB).
Is 1-isopropyl-4-methylbenzene a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 1-isopropyl-4-methylbenzene. 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 1-isopropyl-4-methylbenzene?
The boiling point reported for 1-isopropyl-4-methylbenzene is 177.1 °C (350.8 °F) (HSDB).
What is the melting point of 1-isopropyl-4-methylbenzene?
The melting point reported for 1-isopropyl-4-methylbenzene is -68.9 °C (-92 °F) (HSDB).
How should 1-isopropyl-4-methylbenzene be stored?
CLP Annex VI assigns 1-isopropyl-4-methylbenzene the storage statement P403. Safe storage: Fireproof. (Hazardous Substances Data Bank (HSDB))
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