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Paraffins, waxes and cycloalkanes

3-Ethylhexane

Also known as Hexane, 3-ethyl-, 1,1-diethylbutane, 3-ethyl-hexane

CAS 619-99-8Formula C8H18Molar mass 114.23 g/molEC 210-621-0
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard, Hazardous to the environment
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3-Ethylhexane chemical structure, C8H18, CAS 619-99-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
619-99-8
Formula
C8H18
Molar mass
114.23 g/mol
Physical form
Liquid
HS code
290110
Category
Paraffins, waxes and cycloalkanes
Illustrative photo, closed amber glass reagent bottles on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is 3-Ethylhexane?

Plain description, key identifiers and synonyms

3-Ethylhexane is a chemical substance with the molecular formula C8H18 and a molar mass of 114.23 g/mol. Its CAS registry number is 619-99-8.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-ethylhexane
CAS number
619-99-8 CAS number cross-checked
EC number
210-621-0
Molecular formula
C8H18
UNII
8JH9HL7N4H
MDL number
MFCD00048741
InChIKey
SFRKSDZMZHIISH-UHFFFAOYSA-N
InChI
InChI=1S/C8H18/c1-4-7-8(5-2)6-3/h8H,4-7H2,1-3H3
SMILES (canonical and isomeric)
CCCC(CC)CC

Synonyms

  • Hexane, 3-ethyl-
  • 1,1-diethylbutane
  • 3-ethyl-hexane

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
114.23 g/molcalc.
Exact mass
114.1409 Dacalc.
LogP (octanol/water)
3.22calc.
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
1calc.
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
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H304May be fatal if swallowed and enters airways.
  • H315Causes skin irritation.
  • H336May cause drowsiness or dizziness.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (26)
  • 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.
  • 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.
  • 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.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P331Do not induce vomiting.
  • 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 + 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.

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-Ethylhexane suppliers

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3-Ethylhexane 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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 601-009-00-8[17]

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-Ethylhexane is traded under.

HS 2901.10Indicative HS code

Saturated

World exports in 2024
$8.47B
+23.9% vs 2023, imports $7.66B
2019 to 2024
Top exporters
  1. United States79.8%
  2. Canada10.1%
  3. Germany1.4%
Top importers
  1. China34.6%
  2. United States12.2%
  3. Sweden5.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is 3-Ethylhexane?

3-Ethylhexane is a chemical substance with the molecular formula C8H18 and a molar mass of 114.23 g/mol. Its CAS registry number is 619-99-8.

What is the CAS number of 3-Ethylhexane?

The CAS registry number of 3-Ethylhexane is 619-99-8.

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

The molecular formula of 3-Ethylhexane is C8H18 and its molar mass is 114.23 g/mol.

Is 3-Ethylhexane hazardous?

3-Ethylhexane carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, may be fatal if swallowed and enters airways, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 3-Ethylhexane?

3-Ethylhexane is usually classified under HS code 290110 (Saturated). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 3-Ethylhexane?

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What is the price of 3-Ethylhexane?

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Guides for buyers

Practical guides that help when you source, ship or handle 3-Ethylhexane

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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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