Dehydracetic acid
CAS 520-45-6
EC 208-293-9
Formula C8H8O4
MW 168.15 g/mol
Organic Acids Personal Care & CosmeticsFood & NutritionPharmaceuticals & Healthcare Preservation & BiocideAntioxidant & StabilizerFlavoring & Acidulant
Description
Dehydracetic Acid (CAS 520-45-6), commonly abbreviated as DHAA and also known as Dehydroacetic Acid or Dehydranone, is a synthetic organic acid belonging to the pyranone family. It carries no assigned E-number for direct food use in the EU, though its sodium salt (sodium dehydroacetate, E266) is approved as a food preservative.
In personal care formulations, DHAA inhibits fungal and bacterial growth by disrupting cellular enzyme activity, making it effective in rinse-off and leave-on products at concentrations typically below 0.6%. In food-contact and pharmaceutical applications, it functions as an antimicrobial preservative and antioxidant stabilizer, protecting fats and active ingredients from oxidative degradation.
This material is supplied as a fine crystalline powder in food-grade and cosmetic-grade specifications, compliant with FCC and relevant REACH registration requirements. Standard packaging includes 25 kg fiber drums. Buyers should confirm grade suitability against current EU cosmetics regulation (EC 1223/2009) and applicable pharmacopeial standards.
In personal care formulations, DHAA inhibits fungal and bacterial growth by disrupting cellular enzyme activity, making it effective in rinse-off and leave-on products at concentrations typically below 0.6%. In food-contact and pharmaceutical applications, it functions as an antimicrobial preservative and antioxidant stabilizer, protecting fats and active ingredients from oxidative degradation.
This material is supplied as a fine crystalline powder in food-grade and cosmetic-grade specifications, compliant with FCC and relevant REACH registration requirements. Standard packaging includes 25 kg fiber drums. Buyers should confirm grade suitability against current EU cosmetics regulation (EC 1223/2009) and applicable pharmacopeial standards.
Physical Properties
| Melting Point | 109 °C |
| Boiling Point | 269.9 °C @ Press: 760 Torr |
| Density | 1.1816 (rough estimate) |
| Flash Point | 157°C |
| Appearance | white to light yellow crystal powder |
| Color | Light yellow or cream |
| Odor | almost odorless. slightly bitter-sweet taste. |
| Form | Fine Crystalline Powder |
| Water Solubility | 500mg/L at 25℃ |
| Vapor Pressure | 0.001 hPa (20 °C) |
| Refractive Index | 1.4611 (estimate) |
| pH | 4 (2g/l, H2O, 20℃) |
| Log P | 0.78 at 20℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H302
P
P264P270P330P501P301+P317
Trade & Regulatory
| HS Code | 29322980 |
| WGK (Germany) | 1 |
Other Names
Dehydroacetic acid3-acetyl-6-methylpyran-2,4-dione3-acetyl-4-hydroxy-6-methyl-2H-pyran-2-oneDHSDHADHAADEHYDRANONE
Related Products
Raw Materials
Derivatives
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