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Ethers, epoxides and acetals

Isobutyl ether

Also known as Diisobutyl ether, Propane, 1,1'-oxybis[2-methyl-, 1,1'-Oxybis(2-methylpropane)

CAS 628-55-7Formula C8H18OMolar mass 130.23 g/molEC 211-045-2
GHS signal word: Danger. Pictograms: Flammable
Get quotes Safety data
Isobutyl ether chemical structure, C8H18O, CAS 628-55-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
628-55-7
Formula
C8H18O
Molar mass
130.23 g/mol
Physical form
Liquid
HS code
290919
Category
Ethers, epoxides and acetals
Illustrative photo, closed amber glass reagent bottles on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Isobutyl ether?

Plain description, key identifiers and synonyms

Isobutyl ether is a chemical substance with the molecular formula C8H18O and a molar mass of 130.23 g/mol. Its CAS registry number is 628-55-7. The IUPAC name is 2-methyl-1-(2-methylpropoxy)propane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methyl-1-(2-methylpropoxy)propane
CAS number
628-55-7 CAS number cross-checked
EC number
211-045-2
Molecular formula
C8H18O
UNII
02BSW514GR
MDL number
MFCD00008935
InChIKey
SZNYYWIUQFZLLT-UHFFFAOYSA-N
InChI
InChI=1S/C8H18O/c1-7(2)5-9-6-8(3)4/h7-8H,5-6H2,1-4H3
SMILES (canonical and isomeric)
CC(C)COCC(C)C

Synonyms

  • Diisobutyl ether
  • Propane, 1,1'-oxybis[2-methyl-
  • 1,1'-Oxybis(2-methylpropane)
  • Propane, 1,1'-oxybis(2-methyl-
  • DI-2-BUTYL ETHER
  • 1,1'-oxybis[2-methylpropane]
  • 4-01-00-01594 (Beilstein Handbook Reference)
  • 2-methyl-1-(2-methylpropoxy)propane
  • 2-methylpropyl ether
  • 1-isobutoxy-2-methyl-propane
  • 1-Isobutoxy-2-methylpropane #
  • Propane, 1,1'-oxybis*2-methyl-

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
130.23 g/molcalc.
Exact mass
130.1358 Dacalc.
LogP (octanol/water)
2.32calc.
Topological polar surface area
9.23 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
4calc.
Heavy atoms
9calc.
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

Hazard statements

  • H225Highly flammable liquid and vapour.
Precautionary statements (11)
  • 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.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • 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

Isobutyl ether suppliers

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Isobutyl ether 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

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 Isobutyl ether is traded under.

HS 2909.19Indicative HS code

Acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives…

World exports in 2024
$10.2B
−8.7% vs 2023, imports $10.4B
2019 to 2024
Top exporters
  1. United States32.0%
  2. China22.3%
  3. Saudi Arabia12.9%
Top importers
  1. Singapore16.5%
  2. Mexico14.8%
  3. Japan14.8%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Isobutyl ether, based on the data on this page

What is Isobutyl ether?

Isobutyl ether is a chemical substance with the molecular formula C8H18O and a molar mass of 130.23 g/mol. Its CAS registry number is 628-55-7. The IUPAC name is 2-methyl-1-(2-methylpropoxy)propane.

What is the CAS number of Isobutyl ether?

The CAS registry number of Isobutyl ether is 628-55-7.

What is the molecular formula and weight of Isobutyl ether?

The molecular formula of Isobutyl ether is C8H18O and its molar mass is 130.23 g/mol.

What is Isobutyl ether used for?

Known uses and roles of Isobutyl ether include building blocks in research and laboratory.

Is Isobutyl ether hazardous?

Isobutyl ether carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Isobutyl ether?

Isobutyl ether is usually classified under HS code 290919 (Acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Isobutyl ether?

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What is the price of Isobutyl ether?

Suppliers quote Isobutyl ether 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 Isobutyl ether

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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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