butan-2-one

C4H8O

CAS78-93-3
Flammable
Harmful/Irritant
Danger

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Identification

CAS Number
78-93-3
EC Number
201-159-0
UN Number
1193
Index Number
606-002-00-3
PubChem CID
6569

Physical-chemical properties

Molecular Formula
C4H8O
Molar Mass
72.11 g/mol
IUPAC Name
butan-2-one

Chemical Identifiers

InChI
InChI=1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
InChI Key
ZWEHNKRNPOVVGH-UHFFFAOYSA-N

Overview

butan-2-one (CAS: 78-93-3) is a chemical compound widely used in industry. The molecular formula is C4H8O. The molar mass is 72.11 g/mol.

Safety & Classification

Danger
Classification:

Flam. Liq. 2; STOT SE 3; Eye Irrit. 2

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H225

Highly flammable liquid and vapour.

H336

May cause drowsiness or dizziness.

H319

Causes serious eye irritation.

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

Irritant

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:

Eye Contact

Irritant

Measures if substance gets into the eyes

First Aid Actions

  • +P305IF IN EYES:
  • +P351Rinse cautiously with water for several minutes.
  • +P338Remove contact lenses, if present and easy to do. Continue rinsing.
  • +P313Get medical advice/attention.

Related hazard statements:

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 Number1193
ADR Class3
Packing GroupII
Tunnel CodeD/E
Proper Shipping NameEthylmethylketon
Marine PollutantNo

Frequently Asked Questions

What is butan-2-one?

butan-2-one (CAS 78-93-3) is a chemical substance with the formula C4H8O used in various industrial applications.

What are the properties of butan-2-one?

butan-2-one has a molar mass of 72.11 g/mol. It is classified as Flam. Liq. 2; STOT SE 3; Eye Irrit. 2. See the technical data above for more details.

How to store butan-2-one safely?

butan-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 butan-2-one dangerous?

butan-2-one carries the signal word "Danger". 2 GHS pictograms apply. Always follow the safety instructions in the data sheet.

Where can I buy butan-2-one?

You can order butan-2-one (CAS 78-93-3) from OYSI. We deliver across Europe and offer technical consulting as well as complete compliance documentation.

Services for butan-2-one

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