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Paraffins, waxes and cycloalkanes

Neopentane

Also known as 2,2-Dimethylpropane, Tetramethylmethane, Propane, 2,2-dimethyl-

CAS 463-82-1Formula C5H12Molar mass 72.15 g/molEC 207-343-7
GHS signal word: Danger. Pictograms: Flammable, Gas under pressure, Hazardous to the environment 8 suppliers listed
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Neopentane chemical structure, C5H12, CAS 463-82-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless gas or very volatile liquid
Melting point
-16.4 °C
Boiling point
9.5 °C
Density
Density (at 20 °C): 0.61 g/cm³
Flash point
<-7
HS code
290110
Category
Paraffins, waxes and cycloalkanes
UN number
UN 2044
Illustrative photo, a bundle of gas cylinders on a manifold in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Neopentane?

Plain description, key identifiers and synonyms

May liquefy in cool or cold weather. Less dense than water. Insoluble in water but soluble in alcohol. Under prolonged exposure to fire or heat, the containers may rupture violently and rocket.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,2-dimethylpropane
CAS number
463-82-1 CAS number cross-checkedOther or deprecated CAS: 1320-76-9
EC number
207-343-7
Molecular formula
C5H12
UNII
M863R1J0BP
MDL number
MFCD00039840
InChIKey
CRSOQBOWXPBRES-UHFFFAOYSA-N
InChI
InChI=1S/C5H12/c1-5(2,3)4/h1-4H3
SMILES (canonical and isomeric)
CC(C)(C)C

Synonyms

  • 2,2-Dimethylpropane
  • Tetramethylmethane
  • Propane, 2,2-dimethyl-
  • tert-Pentane
  • 1,1,1-Trimethylethane
  • (CH3)4C
  • 2,2-dimethylpropane, neopentane
  • dimethylpropane
  • 2,2-dimethyl-propane
  • Tetramethylcarbon
  • Pediocin 5
  • Neo-C5H12
  • 2,2-Dimethylpropane 99%
  • 4-01-00-00333 (Beilstein Handbook Reference)
  • UN 2044
  • 2,2-Dimethylpropane [UN2044] [Flammable gas]

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 gas or very volatile liquidexp.
Odour
Gasoline-like odorexp.
Melting point
-16.4 °Cexp.
Boiling point
9.5 °Cexp.
Density
Density (at 20 °C): 0.61 g/cm³exp.
Flash point
<-7exp.
Autoignition temperature
450 °Cexp.
Solubility
In water, 33.2 mg/L at 25 °Cexp.
Vapour pressure
1100 mm Hg @ 21 °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
72.15 g/molcalc.
Exact mass
72.0939 Dacalc.
LogP (octanol/water)
2.05calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
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
GHS04: Gas under pressure
Gas under pressure
GHS09: Hazardous to the environment
Hazardous to the environment
420NFPA 704 rating

Hazard statements

  • H220Extremely flammable gas.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (10)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P377Leaking gas fire: do not extinguish, unless leak can be stopped safely.
  • P381In case of leakage, eliminate all ignition sources.
  • P391Collect spillage.
  • P403Store in a well-ventilated place.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2044
Transport hazard class
2.1

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

Neopentane suppliers

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

All 8 suppliers
8 of 8 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

8 suppliers in 4 countries

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Neopentane 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

Research, butyl rubber.

Neopentane is used as a gasoline blending agent, for making butyl rubber. A research chemical.

Industrial uses: Fuel.

Consumer uses: Fuel.

How it is made

Petroleum refining operations by catalytic cracking, thermal cracking, hydrocracking, and catalytic reforming

Prepared from tert-butyl iodide and dimethylzinc, ... from butylmagnesium iodide and dimethyl sulfate in ether, ... from amylene vapor and hydrogen in presence of an electric discharge, ... passing pentanes over aluminum chloride at 140 °C, ... from neopentylmagnesium chloride and water.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 601-005-00-6

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 Neopentane 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 Neopentane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Neopentane, based on the data on this page

What is Neopentane?

May liquefy in cool or cold weather. Less dense than water. Insoluble in water but soluble in alcohol. Under prolonged exposure to fire or heat, the containers may rupture violently and rocket.

What is the CAS number of Neopentane?

The CAS registry number of Neopentane is 463-82-1. Other or deprecated CAS numbers: 1320-76-9.

What is the molecular formula and weight of Neopentane?

The molecular formula of Neopentane is C5H12 and its molar mass is 72.15 g/mol.

What is Neopentane used for?

Research, butyl rubber. Neopentane is used as a gasoline blending agent, for making butyl rubber. A research chemical. Industrial uses: Fuel. Consumer uses: Fuel.

Is Neopentane hazardous?

Neopentane carries the GHS signal word "Danger". Main hazards: extremely flammable gas, 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 Neopentane?

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

Where can I buy Neopentane?

CompoundList lists 8 suppliers of Neopentane in India, United States, China and Singapore. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Neopentane in India?

3 suppliers in India list Neopentane on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Neopentane?

Suppliers quote Neopentane 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 Neopentane

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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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