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Aromatics

P-Cymene

Also known as 4-Isopropyltoluene, p-Isopropyltoluene, Dolcymene

CAS 99-87-6Formula C10H14Molar mass 134.22 g/molEC 202-796-7
GHS signal word: Danger. Pictograms: Flammable, Acute toxicity (severe), Serious health hazard, Hazardous to the environment 70 suppliers listed
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P-Cymene chemical structure, C10H14, CAS 99-87-6
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless transparent liquid
Melting point
-68.9 °C
Boiling point
177.1 °C
Density
0.8573 g/cm³ at 20 °C
Flash point
47.2 °C
HS code
290290
Category
Aromatics
UN number
UN 2046
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is P-Cymene?

Plain description, key identifiers and synonyms

P-cymene is a monoterpene that is toluene substituted by an isopropyl group at position 4. It has a role as a volatile oil component, a plant metabolite and a human urinary metabolite. It is a member of toluenes and a monoterpene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-methyl-4-propan-2-ylbenzene
CAS number
99-87-6 CAS number cross-checkedOther or deprecated CAS: 4939-75-7
EC number
202-796-7
Molecular formula
C10H14
UNII
1G1C8T1N7Q
MDL number
MFCD00008893
INCI name
P-CYMENE
InChIKey
HFPZCAJZSCWRBC-UHFFFAOYSA-N
InChI
InChI=1S/C10H14/c1-8(2)10-6-4-9(3)5-7-10/h4-8H,1-3H3
SMILES (canonical and isomeric)
CC1=CC=C(C=C1)C(C)C

Synonyms

  • 4-Isopropyltoluene
  • p-Isopropyltoluene
  • Dolcymene
  • 1-Isopropyl-4-methylbenzene
  • p-Cymol
  • Para-cymene
  • Camphogen
  • Paracymene
  • p-Methylcumene
  • 4-Cymene
  • 2-p-Tolylpropane
  • Cymol
  • p-Cimene
  • 1-Methyl-4-isopropylbenzene
  • p-Methylisopropylbenzene
  • Benzene, 1-methyl-4-(1-methylethyl)-
  • Paracymol
  • 4-Isopropyl-1-methylbenzene
  • 4-Methylisopropylbenzene
  • 1-Methyl-4-(1-methylethyl)benzene
  • Cumene, p-methyl-
  • 4-Methyl-1-isopropylbenzene
  • p-methyl cumene
  • p-Isopropylmethylbenzene
  • Isopropyltoluene
Show all 38 synonyms
  • Benzene, 1-isopropyl-4-methyl-
  • 1-methyl-4-(propan-2-yl)benzene
  • 1-methyl-4-propan-2-ylbenzene
  • 4-Isopropyltoluol
  • 4-Cymol
  • 4-methyl-1-(propan-2-yl)benzene
  • Cymene
  • Cymene, p-
  • 4-Isopropylbenzyl radical
  • 1-isopropyl-4-methyl-Benzene
  • 4-methyl isopropylbenzene
  • p-Mentha-1,3,5-triene
  • Methyl-4-(1-methylethyl)benzene

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless transparent liquidexp.
Odour
Sweetish aromatic odorexp.
Melting point
-68.9 °Cexp.
Boiling point
177.1 °Cexp.
Density
0.8573 g/cm³ at 20 °Cexp.
Flash point
47.2 °Cexp.
Autoignition temperature
436 °Cexp.
Solubility
In water, 23.4 mg/L at 25 °Cexp.
Vapour pressure
1.50 mm Hg at 25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
134.22 g/molcalc.
Exact mass
134.1096 Dacalc.
LogP (octanol/water)
3.12calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.4calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment
210NFPA 704 rating

Hazard statements

  • H226Flammable liquid and vapour.
  • H304May be fatal if swallowed and enters airways.
  • H331Toxic if inhaled.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (22)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P331Do not induce vomiting.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2046
Transport hazard class
3
Packing group
III

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

P-Cymene suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

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Where suppliers are based

70 suppliers in 11 countries

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P-Cymene price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

As thinner for lacquers and varnishes usually with other solvents and aromatic hydrocarbons.

Pure p-cresol and carvacrol are made from p-cymene.

Component of commercial terpene solvent mixtures.

Industrial uses: Odor agents, Fragrance, Intermediates.

Consumer uses: Odor agents, Fragrance.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name P-CYMENE(fragrance)

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • human urinary metabolite
  • mammalian metabolite
  • metabolite
  • plant metabolite
  • volatile oil component

Functional uses

  • Deodorizer
  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Fragrance

How it is made

Mixtures of 3-isopropyltoluene (m-cymene) and 4-isopropyltoluene (p-cymene) can be obtained by propylation of toluene in the presence of an isomerization-active Friedel-Crafts catalyst. These two isomers can be separated by distillation only with difficulty.

Usually prepd by alkylation of toluene, meta-, ortho- and para-isomers obtained. (Cymene)

Made from monocyclic terpenes by dehydrogenation. These terpenes can be made from turpentine or obtained as a byproduct from the sulfite digestion of spruce pulp in paper manufacture.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 601-094-00-1

Health and food

  • EU cosmetic ingredient inventory

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code P-Cymene is traded under.

HS 2902.90Indicative HS code

Cyclic hydrocarbons, other

World exports in 2024
$612M
−6.1% vs 2023, imports $670M
2019 to 2024
Top exporters
  1. China28.0%
  2. Germany13.9%
  3. India * partner reported12.6%
Top importers
  1. Germany11.1%
  2. United States10.6%
  3. South Korea8.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for P-Cymene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about P-Cymene, based on the data on this page

What is P-Cymene?

P-cymene is a monoterpene that is toluene substituted by an isopropyl group at position 4. It has a role as a volatile oil component, a plant metabolite and a human urinary metabolite. It is a member of toluenes and a monoterpene.

What is the CAS number of P-Cymene?

The CAS registry number of P-Cymene is 99-87-6. Other or deprecated CAS numbers: 4939-75-7.

What is the molecular formula and weight of P-Cymene?

The molecular formula of P-Cymene is C10H14 and its molar mass is 134.22 g/mol.

What is P-Cymene used for?

As thinner for lacquers and varnishes usually with other solvents and aromatic hydrocarbons. Pure p-cresol and carvacrol are made from p-cymene. Component of commercial terpene solvent mixtures. Industrial uses: Odor agents, Fragrance, Intermediates. Consumer uses: Odor agents, Fragrance. Use classes: Cosmetics.

Is P-Cymene hazardous?

P-Cymene carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, may be fatal if swallowed and enters airways, toxic if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of P-Cymene?

P-Cymene is usually classified under HS code 290290 (Cyclic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy P-Cymene?

CompoundList lists 70 suppliers of P-Cymene in China, United States, India, United Kingdom and 7 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy P-Cymene in India?

11 suppliers in India list P-Cymene on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of P-Cymene?

Suppliers quote P-Cymene on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle P-Cymene

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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