Sodium DHA or Sodium dehydroacetate  is a chemical compound, the sodium salt of dehydroacetic acid.

The name describes the structure of the molecule:

• Sodium indicates the presence of sodium ions (Na+) in the compound.
• Dehydroacetate indicates that the compound is a dehydro derivative of acetic acid. The 'dehydro' part refers to the removal of hydrogen atoms during the formation of the compound.

The synthesis process takes place in different steps:

• Preparation of dehydroacetic acid. Dehydroacetic acid is synthesised from acetic anhydride and malonic acid in the presence of a catalyst.
• Formation of the sodium salt. Dehydroacetic acid is reacted with sodium hydroxide to form the sodium salt, sodium dehydroacetate.

Cosmetics

Sodium dehydroacetate is a restricted ingredient as V/13  a Relevant Item in the Annexes of the European Cosmetics Regulation 1223/2009. Ingredient or substance at risk: 3-Acetyl-6-methylpyran-2,4(3H)-dione and its salts.

Preservative. Any product containing organic, inorganic compounds, water, needs to be preserved from microbial contamination. Preservatives act against the development of harmful microorganisms and against oxidation of the product.

Safety

Sodium DHA or Sodium dehydroacetate can give allergic reactions.

Sodium dehydroacetate studies

• Molecular Formula  C₈H₇NaO₄
• Molecular Weight  190.13 g/mol
• UNII: 8W46YN971G
• CAS  4418-26-2
• EC number   224-580-1

Sinonimi:

• Sodium dehydroacetate
• potassium 3-acetyl-6-methyl-2-oxopyran-4-olate
• C-08065
• dehydroacetic acid sodium
• Dehydroacetic acid sodium salt
• 2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid delta-lactone
• sodium 3-acetyl-6-methyl-2-oxo-2H-pyran-4-olate
• 3-Acetyl-4-hydroxy-6-methyl-2-pyrone Sodium Salt
• 3-acetyl-4-hydroxy-6-methyl-2-oxopyran, sodium salt
• Sodium 3-Acetyl-4-hydroxy-6-methyl-2-oxo-4(2H)-pyranolate