D

Denatured

Quick Reference
Also Known AsMethylated spirits, denatured ethanol, industrial methylated spirits (IMS), rubbing alcohol (sometimes)

What is Denatured?

A term describing a substance, particularly a protein or nucleic acid, that has lost its native structure and function. Also refers to ethanol that has been rendered unfit for drinking by adding toxic or foul-tasting substances.

Properties & Characteristics

Denatured alcohol (denatured ethanol) is ethanol to which toxic or foul-tasting additives (denaturants) have been added to make it unfit for human consumption, avoiding beverage alcohol taxes. Common denaturants: methanol (toxic, ~5-10%), isopropanol, pyridine, or denatonium benzoate (bitterant). "Methylated spirits" contains methanol. Denaturation does not significantly affect the chemical or solvent properties of ethanol for industrial or laboratory use.

Uses & Applications

Denatured alcohol is used as an industrial solvent, fuel, antiseptic, cleaning agent, and in cosmetics. It is widely used in laboratories as a general-purpose solvent and disinfectant where pure ethanol would be subject to excise duty.

Safety Information

The methanol in some formulations of denatured alcohol is highly toxic — ingestion causes blindness and death (metabolised to formate and formaldehyde). Never use denatured alcohol for any purpose where it might be ingested or absorbed. Flammable: flash point ~13°C.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Denatured
Synonyms Methylated spirits, denatured ethanol, industrial methylated spirits (IMS), rubbing alcohol (sometimes)

Frequently Asked Questions

A term describing a substance, particularly a protein or nucleic acid, that has lost its native structure and function. Also refers to ethanol that has been rendered unfit for drinking by adding toxic or foul-tasting substances.

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