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Olefins and dienes

3-Methyleneheptane

Also known as 2-Ethyl-1-hexene, Heptane, 3-methylene-, 3-methylideneheptane

CAS 1632-16-2Formula C8H16Molar mass 112.22 g/molEC 216-636-9
GHS signal word: Warning. Pictograms: Flammable, Harmful or irritant, Hazardous to the environment
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3-Methyleneheptane chemical structure, C8H16, CAS 1632-16-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1632-16-2
Formula
C8H16
Molar mass
112.22 g/mol
Physical form
Liquid
HS code
290129
Category
Olefins and dienes
Illustrative photo, closed blue jerry cans in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is 3-Methyleneheptane?

Plain description, key identifiers and synonyms

3-methyleneheptane is an alkene that is heptane which carries a methylidene group at position 3. It has a role as a human metabolite. It is a volatile organic compound and an alkene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-methylideneheptane
CAS number
1632-16-2 CAS number cross-checked
EC number
216-636-9
Molecular formula
C8H16
UNII
9LQ21Q17WH
MDL number
MFCD00027242
InChIKey
XTVRLCUJHGUXCP-UHFFFAOYSA-N
InChI
InChI=1S/C8H16/c1-4-6-7-8(3)5-2/h3-7H2,1-2H3
SMILES (canonical and isomeric)
CCCCC(=C)CC

Synonyms

  • 2-Ethyl-1-hexene
  • Heptane, 3-methylene-
  • 3-methylideneheptane
  • 2-Ethylhexene
  • 1-Hexene, 2-ethyl-
  • 2-Ethylhex-1-ene
  • USAF DO-21
  • 2-Ethyl hexene-1
  • 3-methylene-heptane
  • 4-01-00-00884 (Beilstein Handbook Reference)
  • 2Ethylhexene
  • 2Ethylhex1ene
  • 3Methyleneheptane
  • 2Ethyl hexene1
  • 1Hexene, 2ethyl
  • Heptane, 3methylene
  • 2-Ethylhexene-1
  • 2-Ethyl-1-hexene, AldrichCPR

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

Physical form
Liquidexp.

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
112.22 g/molcalc.
Exact mass
112.1252 Dacalc.
LogP (octanol/water)
3.14calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
4calc.
Heavy atoms
8calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.75calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H226Flammable liquid and vapour.
  • H315Causes skin irritation.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (18)
  • 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.
  • P264Wash skin thoroughly after handling.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation 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.
  • P501Dispose of contents and container in accordance with local regulations.

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

3-Methyleneheptane suppliers

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3-Methyleneheptane 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

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

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 3-Methyleneheptane is traded under.

HS 2901.29Indicative HS code

Unsaturated, other

World exports in 2024
$2.65B
−3.2% vs 2023, imports $2.57B
2019 to 2024
Top exporters
  1. United States43.9%
  2. South Africa15.3%
  3. Qatar * partner reported9.0%
Top importers
  1. Singapore10.9%
  2. United States10.1%
  3. South Korea8.7%

* Partner reported figures, a lower bound.

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

The HS code shown for 3-Methyleneheptane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 3-Methyleneheptane, based on the data on this page

What is 3-Methyleneheptane?

3-methyleneheptane is an alkene that is heptane which carries a methylidene group at position 3. It has a role as a human metabolite. It is a volatile organic compound and an alkene.

What is the CAS number of 3-Methyleneheptane?

The CAS registry number of 3-Methyleneheptane is 1632-16-2.

What is the molecular formula and weight of 3-Methyleneheptane?

The molecular formula of 3-Methyleneheptane is C8H16 and its molar mass is 112.22 g/mol.

What is 3-Methyleneheptane used for?

Known uses and roles of 3-Methyleneheptane include animal metabolite, eukaryotic metabolite, human metabolite, mammalian metabolite and metabolite.

Is 3-Methyleneheptane hazardous?

3-Methyleneheptane carries the GHS signal word "Warning". Main hazards: flammable liquid and vapour, causes skin irritation, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 3-Methyleneheptane?

3-Methyleneheptane is usually classified under HS code 290129 (Unsaturated, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 3-Methyleneheptane?

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What is the price of 3-Methyleneheptane?

Suppliers quote 3-Methyleneheptane 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 3-Methyleneheptane

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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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