Skip to Main Navigation
Skip to Page Content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Testing Status of Paraldehyde M200113


CASRN: 123-63-7

Formula: C6-H12-O3

Synonyms/Common Names

  • p-Acetaldehyde
  • 2,4,6-Trimethyl-1,3,5-trioxane

Known Uses

Substitute for acetaldehyde; manufacture dyestuff intermediates; solvent for fats, oils, waxes, gums, resins; leather, mixtures for cellulose derivatives; industrially it has been used as solvent & also as rubber activator & antioxidant; medication. Associated with tobacco: reported either as a natural component of tobacco, pyrolysis product (in tobacco smoke), or additive for one or more types of tobacco products.

Chemical Properties

Toxicity Effects (HSDB)

Genetic Toxicology

  • Salmonella  (A01340)  Completed 
    •  Positive