Ethanol CAS 64-17-5

Ethanol (CAS 64-17-5, formula C2H6O) is an industrial chemical with a molecular weight of about 46.07 g/mol. Its harmonised GHS classification carries the signal word Danger.

Identifiers

Name

Ethanol

CAS number

64-17-5

CLP index number

603-002-00-5

EC number

200-578-6

Molecular formula

C2H6O

Molecular weight

46.07 g/mol

Also known as

Ethyl alcohol, Alcohol, EtOH, Grain alcohol, Spirit of wine, Absolute alcohol, Rectified spirit

GHS classification

Harmonised classification under the CLP Regulation (Annex VI), index number 603-002-00-5. Signal word: Danger.

Pictograms

• GHS02 Flame

Suppliers may classify additional hazards from their own data, so a supplier's Safety Data Sheet can list more than the harmonised entry.

Source: Regulation (EC) No 1272/2008, Annex VI, retrieved 2026-10-10. Confirm against the current consolidated text and your supplier's SDS before relying on it.

Creating a Safety Data Sheet for a product containing Ethanol

If Ethanol is an ingredient, record its CAS number and concentration in Section 3 and use it in the mixture classification that drives Section 2 and the label.

How to write a Safety Data Sheet · GHS mixture classification

Frequently asked questions

What is the CAS number of Ethanol?

The CAS Registry Number of Ethanol is 64-17-5.

What is the chemical formula of Ethanol?

Ethanol has the formula C2H6O and a molecular weight of about 46.07 g/mol.

What are the GHS hazards of Ethanol?

Ethanol carries the signal word Danger. Its harmonised hazard statements are H225: Highly flammable liquid and vapour..

Which GHS pictograms apply to Ethanol?

GHS02 (Flame).

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Information is provided for general reference and is not a substitute for a supplier's Safety Data Sheet or professional advice. See our disclaimer.