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Hydrocarbons

beta-Terpinene

Also known as p-Mentha-1(7),3-diene, 4-methylidene-1-(propan-2-yl)cyclohex-1-ene, 4-methylidene-1-propan-2-ylcyclohexene

CAS 99-84-3Formula C10H16Molar mass 136.24 g/molEC 202-793-0
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beta-Terpinene chemical structure, C10H16, CAS 99-84-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
99-84-3
Formula
C10H16
Molar mass
136.24 g/mol
EC number
202-793-0
HS code
290219
Category
Hydrocarbons

What is beta-Terpinene?

Plain description, key identifiers and synonyms

Beta-terpinene is one of three isomeric monoterpenes differing in the positions of their two double bonds (alpha- and gamma-terpinene being the others). In beta-terpinene the double bonds are at the 1(7)- and 3-positions of the p-menthane skeleton. beta-Terpinene has no known natural source.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-methylidene-1-propan-2-ylcyclohexene
CAS number
99-84-3 CAS number cross-checked
EC number
202-793-0
Molecular formula
C10H16
UNII
DV74J5RW4Y
InChIKey
SCWPFSIZUZUCCE-UHFFFAOYSA-N
InChI
InChI=1S/C10H16/c1-8(2)10-6-4-9(3)5-7-10/h6,8H,3-5,7H2,1-2H3
SMILES (canonical and isomeric)
CC(C)C1=CCC(=C)CC1

Synonyms

  • p-Mentha-1(7),3-diene
  • 4-methylidene-1-(propan-2-yl)cyclohex-1-ene
  • 4-methylidene-1-propan-2-ylcyclohexene
  • beta-Terpinen
  • b-terpinene
  • Cyclohexene, 4-methylene-1-(1-methylethyl)-
  • 4-methylene-1-(1-methylethyl)cyclohexene
  • 4-Methylene-1-(1-methylethyl)-Cyclohexene
  • Beta terpinene
  • beta -terpinene
  • 1-Isopropyl-4-methylenecyclohexene
  • 1-isopropyl-4-methylenecyclohex-1-ene
  • 1-Isopropyl-4-methylene-1-cyclohexene
  • menthadiene-1(7),3
  • 1-Isopropyl-4-methylene-1-cyclohexene #
  • 4-methylidene-1-(propan-2-yl)cyclohexene
  • 4-methylene-1-(1-methylethenyl)cyclohexane
  • 4-methylene-1-(1-methylethyl)cyclohex-1-ene

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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)
3.31calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.6calc.
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, C=C1CC=CCC1

C=C1CC=CCC1

1 ring, 7 atoms, the Cyclohexene, 4-methylene- ring system.

73 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

beta-Terpinene suppliers

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beta-Terpinene 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

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code beta-Terpinene 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 beta-Terpinene is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about beta-Terpinene, based on the data on this page

What is beta-Terpinene?

Beta-terpinene is one of three isomeric monoterpenes differing in the positions of their two double bonds (alpha- and gamma-terpinene being the others). In beta-terpinene the double bonds are at the 1(7)- and 3-positions of the p-menthane skeleton. beta-Terpinene has no known natural source.

What is the CAS number of beta-Terpinene?

The CAS registry number of beta-Terpinene is 99-84-3.

What is the molecular formula and weight of beta-Terpinene?

The molecular formula of beta-Terpinene is C10H16 and its molar mass is 136.24 g/mol.

What is beta-Terpinene used for?

Known uses and roles of beta-Terpinene include building blocks in research and laboratory.

Is beta-Terpinene hazardous?

No GHS hazard classification for beta-Terpinene is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of beta-Terpinene?

beta-Terpinene 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 beta-Terpinene?

Post a free request on CompoundList and suppliers of beta-Terpinene will send you quotes. Your contact details stay private until you accept a quote.

What is the price of beta-Terpinene?

Suppliers quote beta-Terpinene 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 beta-Terpinene

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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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