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Synthetic aroma chemicals

(±)-alpha-Pinene

Also known as alpha-Pinene, 2,6,6-Trimethylbicyclo[3.1.1]hept-2-ene, Acintene A

CAS 80-56-8Formula C10H16Molar mass 136.24 g/molEC 201-291-9
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant, Serious health hazard 109 suppliers listed
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(±)-alpha-Pinene chemical structure, C10H16, CAS 80-56-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless, transparent liquid
Melting point
-62.5 °C
Boiling point
156 °C
Density
0.8592 at 20 °C/4 °C
Flash point
33 °C
HS code
290219
Category
Synthetic aroma chemicals
UN number
UN 2368
Illustrative photo, clear colourless liquid in a glass reagent bottle on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is (±)-alpha-Pinene?

Plain description, key identifiers and synonyms

Alpha-pinene is a pinene that is bicyclo[3.1.1]hept-2-ene substituted by methyl groups at positions 2, 6 and 6 respectively. It has a role as a plant metabolite.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,6,6-trimethylbicyclo[3.1.1]hept-2-ene
CAS number
80-56-8 CAS number cross-checkedOther or deprecated CAS: 2437-95-8
EC numbers
201-291-9, 219-445-9
Molecular formula
C10H16
INCI name
PINENE
InChIKey
GRWFGVWFFZKLTI-UHFFFAOYSA-N
InChI
InChI=1S/C10H16/c1-7-4-5-8-6-9(7)10(8,2)3/h4,8-9H,5-6H2,1-3H3
SMILES (canonical and isomeric)
CC1=CCC2CC1C2(C)C

Synonyms

  • alpha-Pinene
  • 2,6,6-Trimethylbicyclo[3.1.1]hept-2-ene
  • Acintene A
  • pin-2(3)-ene
  • alfa-Pinene
  • Sylvapine A
  • Pinene, alpha
  • Leavo-95
  • (+-)-alpha-pinene
  • (+-)-2-pinene
  • 2,6,6-Trimethylbicyclo(3.1.1)-2-hept-2-ene
  • Bicyclo[3.1.1]hept-2-ene, 2,6,6-trimethyl-
  • pc-500(Terpene)
  • 2,6,6-Trimethylbicyclo(3.1.1)hept-2-ene
  • Bicyclo(3.1.1)hept-2-ene, 2,6,6-trimethyl-
  • 4,6,6-trimethylbicyclo(3.1.1)hept-3-ene
  • 2-Pinene
  • (+/-)-2-Pinene
  • Pinene isomer
  • (+/-)-alpha-Pinene
  • (1R,5R)-2-Pinene
  • (1R)-(+)-a-Pinene (~80% ee)
  • pin-2-ene
  • 4,6,6-Trimethylbicyklo(3,1,1)hept-3-en
  • alphapinene
Show all 36 synonyms
  • alpha pinene
  • an alpha-pinene
  • Cyclic dexadiene
  • Acitene A
  • (-)alpha-pinene
  • a-Pinene PF
  • alpha [D] Pinene
  • alpha [L] Pinene
  • 1R-alpha-Pinene
  • (R)-alpha-Pinene
  • Camphor EP Impurity A

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
CHARACTERISTIC ODOR OF PINEexp.
Melting point
-62.5 °Cexp.
Boiling point
156 °Cexp.
Density
0.8592 at 20 °C/4 °Cexp.
Flash point
33 °Cexp.
Autoignition temperature
255 °Cexp.
Solubility
In water, 2.49 mg/L at 25 °Cexp.
Vapour pressure
4.75 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
136.24 g/molcalc.
Exact mass
136.1252 Dacalc.
LogP (octanol/water)
3calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
Rings
3calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.8calc.
Formal charge
0calc.
Stereocentres
2calc.
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, C1=CC2CC(C1)C2

C1=CC2CC(C1)C2

3 rings, 7 atoms, the Bicyclo(3.1.1)hept-2-ene ring system.

357 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment
310NFPA 704 rating

Hazard statements

  • H226Flammable liquid and vapour.
  • H302Harmful if swallowed.
  • H304May be fatal if swallowed and enters airways.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H318Causes serious eye damage.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (30)
  • 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.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P331Do not induce vomiting.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • 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 2368
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

(±)-alpha-Pinene suppliers

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All 109 suppliers
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Where suppliers are based

109 suppliers in 25 countries

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(±)-alpha-Pinene 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

Cosmetics,food/foodstuff additive,odor agents.

Mfr of insecticides (former), solvents, plasticizers, perfume bases.

Flavor ingredient.

Industrial uses: Intermediate, Fragrance, Intermediates.

Consumer uses: Solvent, Fragrance.

Cosmetic ingredient, INCI name PINENE(antifoaming, fragrance)

Roles

  • eukaryotic metabolite
  • metabolite
  • plant metabolite

Functional uses

  • Flavouring and nutrient
  • Fragrance

Cosmetic functions

  • Antifoaming
  • Fragrance

How it is made

Obtained from oil of turpentine which contains 58-65% alpha-pinene along with 30% beta-pinene.

Isolation of d-alpha-pinene from Port Oxford cedar wood oil (Chamaecyparis lawsoniama Parl., Pinaceae) ... Isolation of l-alpha-pinene from mandarin peel oil (Citrus reticulata Blando, Rutaceae).

Pure alpha-pinene is obtained by distillation of turpentine oils.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex III, restricted in cosmetics
    Name: Pinene, Ref no: 371, Annex ref: III/371

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 (±)-alpha-Pinene is traded under.

HS 2902.19Indicative HS code

Cyclanes, cyclenes and cycloterpenes, other

World exports in 2024
$979M
+24.3% vs 2023, imports $1B
2019 to 2024
Top exporters
  1. China23.4%
  2. United States20.6%
  3. Germany13.6%
Top importers
  1. India * partner reported9.9%
  2. United States9.8%
  3. South Korea9.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about (±)-alpha-Pinene, based on the data on this page

What is (±)-alpha-Pinene?

Alpha-pinene is a pinene that is bicyclo[3.1.1]hept-2-ene substituted by methyl groups at positions 2, 6 and 6 respectively. It has a role as a plant metabolite.

What is the CAS number of (±)-alpha-Pinene?

The CAS registry number of (±)-alpha-Pinene is 80-56-8. Other or deprecated CAS numbers: 2437-95-8.

What is the molecular formula and weight of (±)-alpha-Pinene?

The molecular formula of (±)-alpha-Pinene is C10H16 and its molar mass is 136.24 g/mol.

What is (±)-alpha-Pinene used for?

Cosmetics,food/foodstuff additive,odor agents. Mfr of insecticides (former), solvents, plasticizers, perfume bases. Flavor ingredient. Industrial uses: Intermediate, Fragrance, Intermediates. Consumer uses: Solvent, Fragrance.

Is (±)-alpha-Pinene hazardous?

(±)-alpha-Pinene carries the GHS signal word "Danger". Main hazards: flammable liquid and vapour, harmful if swallowed, may be fatal if swallowed and enters airways. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of (±)-alpha-Pinene?

(±)-alpha-Pinene is usually classified under HS code 290219 (Cyclanes, cyclenes and cycloterpenes, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy (±)-alpha-Pinene?

CompoundList lists 109 suppliers of (±)-alpha-Pinene in China, United States, India, United Kingdom and 21 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy (±)-alpha-Pinene in India?

12 suppliers in India list (±)-alpha-Pinene on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of (±)-alpha-Pinene?

Suppliers quote (±)-alpha-Pinene 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 (±)-alpha-Pinene

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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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