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Ethers, epoxides and acetals

Ether, ethyl ethynyl

Also known as Ethoxyethyne, Ethoxyacetylene, Ethyne, ethoxy-

CAS 927-80-0Formula C4H6OMolar mass 70.09 g/molEC 213-164-5
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard, Hazardous to the environment 4 suppliers listed
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Ether, ethyl ethynyl chemical structure, C4H6O, CAS 927-80-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
927-80-0
Formula
C4H6O
Molar mass
70.09 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 Ether, ethyl ethynyl?

Plain description, key identifiers and synonyms

Ether, ethyl ethynyl is a chemical substance with the molecular formula C4H6O and a molar mass of 70.09 g/mol. Its CAS registry number is 927-80-0. The IUPAC name is ethynoxyethane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
ethynoxyethane
CAS number
927-80-0 CAS number cross-checkedOther or deprecated CAS: 977-80-0
EC number
213-164-5
Molecular formula
C4H6O
UNII
B8RFM34GMK
MDL number
MFCD00009247
InChIKey
WMYNMYVRWWCRPS-UHFFFAOYSA-N
InChI
InChI=1S/C4H6O/c1-3-5-4-2/h1H,4H2,2H3
SMILES (canonical and isomeric)
CCOC#C

Synonyms

  • Ethoxyethyne
  • Ethoxyacetylene
  • Ethyne, ethoxy-
  • Ethyl ethynyl ether
  • 4-01-00-02211 (Beilstein Handbook Reference)
  • Ethyne, ethoxy-(9CI)
  • ethynoxyethane
  • Ethynyl ethyl ether
  • Ethyne, ethoxy- (9CI)
  • ethoxy-ethyne
  • 1-Ethoxyethyne
  • ethoxy acetylene
  • ethyl ethynylether
  • 1-Ethoxyacetylene #
  • Ethoxyacetylene, 50% hexane solution
  • Ethyl ethynyl ether - 40 wt. % in hexanes

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
70.09 g/molcalc.
Exact mass
70.0419 Dacalc.
LogP (octanol/water)
0.61calc.
Topological polar surface area
9.23 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
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.
  • H361Suspected of damaging fertility or the unborn child.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (29)
  • P203Obtain, read and follow all safety instructions before use.
  • 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.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • 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.
  • P318If exposed or concerned, get medical advice.
  • 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

Ether, ethyl ethynyl suppliers

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

All 4 suppliers
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Where suppliers are based

4 suppliers in 4 countries

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Ether, ethyl ethynyl 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

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

Frequently asked questions

Quick answers about Ether, ethyl ethynyl, based on the data on this page

What is Ether, ethyl ethynyl?

Ether, ethyl ethynyl is a chemical substance with the molecular formula C4H6O and a molar mass of 70.09 g/mol. Its CAS registry number is 927-80-0. The IUPAC name is ethynoxyethane.

What is the CAS number of Ether, ethyl ethynyl?

The CAS registry number of Ether, ethyl ethynyl is 927-80-0. Other or deprecated CAS numbers: 977-80-0.

What is the molecular formula and weight of Ether, ethyl ethynyl?

The molecular formula of Ether, ethyl ethynyl is C4H6O and its molar mass is 70.09 g/mol.

Is Ether, ethyl ethynyl hazardous?

Ether, ethyl ethynyl 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 Ether, ethyl ethynyl?

Ether, ethyl ethynyl 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 Ether, ethyl ethynyl?

CompoundList lists 4 suppliers of Ether, ethyl ethynyl in China, Germany, United Kingdom and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Ether, ethyl ethynyl?

Suppliers quote Ether, ethyl ethynyl 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 Ether, ethyl ethynyl

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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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