4-methylideneoxetan-2-one

C4H4O2

CAS674-82-8

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Identification

CAS Number: 674-82-8
EC Number: 211-617-1
UN Number: 2521
Index Number: 606-017-00-5
PubChem CID: 12661

Physical-chemical properties

Molecular Formula: C4H4O2
Molar Mass: 84.07 g/mol
IUPAC Name: 4-methylideneoxetan-2-one

Chemical Identifiers

InChI: InChI=1S/C4H4O2/c1-3-2-4(5)6-3/h1-2H2
InChI Key: WASQWSOJHCZDFK-UHFFFAOYSA-N

Overview

4-methylideneoxetan-2-one (CAS: 674-82-8) is a chemical compound widely used in industry. The molecular formula is C4H4O2. The molar mass is 84.07 g/mol.

Safety & Classification

Warning

Classification:

Flam. Liq. 3; Acute Tox. 4 *

GHS Pictograms

Flame

GHS02

Flammable. May ignite on contact with air, water, or heat sources.

Exclamation Mark

GHS07

Harmful. May cause irritation, allergic reactions, or drowsiness.

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H226

Flammable liquid and vapour.

H332

Harmful if inhaled.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Inhalation

Harmful

Measures if vapours or dust are inhaled

First Aid Actions

+P304IF INHALED:
+P340Remove person to fresh air and keep comfortable for breathing.
+P311Call a POISON CENTER/doctor.

Related hazard statements:

H332

General Measures

Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)

First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.

Transport (ADR)

UN Number	2521
ADR Class	6.1
Packing Group	I
Tunnel Code	C/D
Proper Shipping Name	Diketen, stabilisiert
Marine Pollutant	No

Frequently Asked Questions

What is 4-methylideneoxetan-2-one?

4-methylideneoxetan-2-one (CAS 674-82-8) is a chemical substance with the formula C4H4O2 used in various industrial applications.

What are the properties of 4-methylideneoxetan-2-one?

4-methylideneoxetan-2-one has a molar mass of 84.07 g/mol. It is classified as Flam. Liq. 3; Acute Tox. 4 *. See the technical data above for more details.

How to store 4-methylideneoxetan-2-one safely?

4-methylideneoxetan-2-one should be stored according to the Safety Data Sheet instructions. Follow the GHS labeling and keep the substance in a cool, dry and well-ventilated place.

Is 4-methylideneoxetan-2-one dangerous?

4-methylideneoxetan-2-one carries the signal word "Warning". 2 GHS pictograms apply. Always follow the safety instructions in the data sheet.

Where can I buy 4-methylideneoxetan-2-one?

You can order 4-methylideneoxetan-2-one (CAS 674-82-8) from OYSI. We deliver across Europe and offer technical consulting as well as complete compliance documentation.