DEHYDROACETIC ACID
Dehydroacetic acid is a synthetic organic compound known for its effective antimicrobial and preservative properties, used across personal care, pharmaceutical, and food products.
Due to its broad-spectrum effectiveness, Dehydroacetic acid is often chosen for water-based formulations that are prone to contamination by bacteria, fungi, and yeast.
The mildness of Dehydroacetic acid makes it a preferred preservative in products for sensitive skin, including baby care and "natural" cosmetics.
CAS number: 520-45-6
EC number: 208-293-9
Hill Formula: C8H8O4
Molar Mass: 168.2 g/mol
Synonyms: 2H-Pyran-2,4(3H)-dione, 3-acetyl-6-methyl-, 3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione, Acetic acid, dehydro-, Dehydroacetic acid, DHAA, DHS, 4-Hexenoic acid, 2-acetyl-5-hydroxy-3-oxo-, δ-lactone, 3-Acetyl-6-methyldihydropyrandione-2,4, Dehydracetic acid, 3-Acetyl-6-methylpyran-2,4(3H)-dione, 3-Acetyl-6-methyl-1-oxacyclohex-5-ene-2,4-dione, Biocide 470F, NSC 8770, Geogard 111A, 3-Acetyl-6-methyl-3,4-dihydro-2H-pyran-2,4-dione, 3-Acetyl-6-methyl-pyran-2,4-dione, 3-Acetyl-6-methylpyran-2,4-dione, Unisept DHA, DEHYDROACETIC ACID, 520-45-6, 3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione, Methylacetopyronone, Biocide 470F, 2H-Pyran-2,4(3H)-dione, 3-acetyl-6-methyl-, Acetic acid, dehydro-, 3-Acetyl-6-methyl-2,4-pyrandione, 3-acetyl-6-methylpyran-2,4-dione, 16807-48-0, 3-Acetyl-6-methyl-pyran-2,4-dione, MFCD00066709, DTXSID6020014, 3-Acetyl-6-methylpyrandione-2,4, NSC-8770, 3-acetyl-6-methyl-3,4-dihydro-2H-pyran-2,4-dione, 2-Acetyl-5-hydroxy-3-oxo-4-hexenoic acid, .delta.-lactone, Dehydroacetic acid [ISO], DTXCID9014, SCHEMBL17787, PGRHXDWITVMQBC-UHFFFAOYSA-, NSC8770, CHEBI:137426, 4-Hexenoic acid, .delta.-lactone, HMS3264K05, Pharmakon1600-01301016, HY-B1211, 2H-Pyran-2, 3-acetyl-6-methyl-, Tox21_302764, WLN: T6OV DV CHJ CV1 F1, BBL013155, NSC760135, STL163953, Dehydroacetic acid, >=98.0% (T), AKOS000119576, AKOS016038058, 1ST2505, CCG-213725, CS-4810, NSC-760135, 3-acetyl-6-methyl-3H-pyran-2,4-dione, NCGC00256469-01, 3-Acetyl-6-methyl-2,4(3H)-pyrandione, AC-10441, CAS-520-45-6, DS-15291, SY012826, DB-252330, D0039, NS00003021, 3-Acetyl-6-Methyldihydropyrandione-2,4(3H), EN300-20186, 3-Acetyl-6-methyl-2,3-dihydropyran-2,4-dione, AB01510434_02, AH-034/32463001, SR-01000389026, Dehydroacetic acid 1000 microg/mL in Ethyl acetate, SR-01000389026-1, BRD-A17300716-001-01-5, Q63088091, 3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione, enol form, 3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione, ion(1-), F0191-0260, 4-Hexenoic acid, 2-acetyl-5-hydroxy-3-oxo-, .delta.-lactone, Dehydroacetic acid, United States Pharmacopeia (USP) Reference Standard, Dehydroacetic acid, Pharmaceutical Secondary Standard; Certified Reference Material, InChI=1/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
Dehydroacetic acid is a crystalline compound widely used as a preservative and fungicide in personal care, cosmetic, and pharmaceutical formulations.
Dehydroacetic acid is valued for its broad-spectrum antimicrobial properties, providing effective preservation against fungi, bacteria, and yeast without affecting the formulation’s pH significantly.
Dehydroacetic acid is a colorless, and odorless compound that is soluble in water.
Dehydroacetic acid operates as an antimicrobial agent by disrupting the cell membrane of microorganisms.
Dehydroacetic acid achieves this by binding to the phospholipid head groups within the cell membrane, thereby compromising its integrity and resulting in cell death.
Additionally, Dehydroacetic acid has demonstrated inhibitory effects on specific enzymes such as DNA polymerase and RNA polymerase, which play critical roles in bacterial cell replication
Dehydroacetic acid is particularly popular in formulations aiming for "natural" or "clean" labels, due to its safe profile and mild effect on skin and hair
Dehydroacetic acid and Sodium Dehydroacetate are tasteless, odorless white powders.
In cosmetics and personal care products, Dehydroacetic acid and Sodium Dehydroacetate are used in the formulation of a wide variety of products, including bath, skin care, suntan, sunscreen, fragrance, shaving, hair and nail care products, as well as eye and facial makeup.
Dehydroacetic acid is one of the food additives found in red wine and was determined by ultra-fast liquid chromatography-tandem quadrupole mass spectrometry (UFLC-MS/MS).
Dehydroacetic acid is an organic compound which has several industrial applications.
Dehydroacetic acid is classified as a pyrone derivative.
Dehydroacetic acid presents as an odorless, colorless to white crystalline powder, almost insoluble in water and moderately soluble in most organic solvents
Dehydroacetic acid is a synthetic preservative used in amounts of 0.6% or less where it’s proven to be safe and effective.
Dehydroacetic acid is characterized as a white to cream crystalline powder.
Sometimes Dehydroacetic acid's salt form (known as sodium dehydroacetate) is used, as it is more soluble in certain types of cosmetic formulas.
Dehydroacetic acid is most effective on fungi.
Dehydroacetic acid is an organic compound primarily serving as a preservative in cosmetics and personal care industry.
Dehydroacetic acid fights off the growth of microorganisms such as bacteria, yeast, and mold in products, thus increasing the shelf life.
Dehydroacetic acid is compatible with other preservatives when combined for added efficiency - making it a versatile choice.
In its raw form, Dehydroacetic acid appears as a white crystalline powder that is odorless.
Further, Dehydroacetic acid is a safe ingredient and is well tolerated by most skin types.
The chemical formula of Dehydroacetic acid is C8H8O4.
Dehydroacetic acid is an organic compound that usually comes in the form of an odourless white crystalline powder.
Dehydroacetic acid has potent antifungal and antibacterial properties, and is used in many personal and skin care products as a preservative.
Dehydroacetic acid is a synthetic chemical that is considered to be a low hazard for human health and for the environment.
Clinical tests have shown present inclusion rates of Dehydroacetic acid (less than 0.6%) to be non-irritating and safe for use in cosmetics.
Dehydroacetic acid is a synthetic organic compound known for its effective antimicrobial and preservative properties, used across personal care, pharmaceutical, and food products.
Dehydroacetic acid is characterized by its crystalline structure and mild odor, making it compatible with a range of personal care formulations.
Due to its broad-spectrum effectiveness, Dehydroacetic acid is often chosen for water-based formulations that are prone to contamination by bacteria, fungi, and yeast.
Dehydroacetic acid has a stable nature that ensures product safety and longevity, even in formulations exposed to different environmental conditions.
The mildness of Dehydroacetic acid makes it a preferred preservative in products for sensitive skin, including baby care and "natural" cosmetics.
Dehydroacetic acid is a biodegradable compound, making it an environmentally friendly choice in products with sustainable and clean-label claims
Uses of Dehydroacetic Acid:
Industrially, Dehydroacetic acid has several uses which include the following:
Dehydroacetic acid is used as a fungicide and bactericide.
The sodium salt, sodium dehydroacetate, is often used in place of Dehydroacetic acid because of its greater solubility in water.
Dehydroacetic acid is used as a food preservative to prevent pickle bloating in squash and strawberries.
When used as a food additive, Dehydroacetic acid is referred to using the International Numbering System for Food Additives or E number 265.
Dehydroacetic acid is used as a plasticizer in synthetic resins.
Dehydroacetic acid is used as an antienzyme in toothpastes.
Dehydroacetic acid is used as a precursor for dimethyl-4-pyridones.
Dehydroacetic acids are synthesized when it is exposed to aqueous solutions containing primary amines.
Sodium Dehydroacetate and Dehydroacetic acid kill microorganisms and prevent their growth and reproduction, thus protecting cosmetics and personal care products from spoilage.
Dehydroacetic acid is widely used in the cosmetic industry as an effective preservative.
Dehydroacetic acid prevents the growth of harmful bacteria and fungi in formulations to make them last longer.
Dehydroacetic acid is commonly found in lotions, creams, shampoos, conditioners, and other water-based formulations where microbial contamination is a concern.
Additionally, Dehydroacetic acid serves as an antimicrobial agent, ensuring product safety and integrity.
Dehydroacetic acid's broad-spectrum efficacy, stability in various formulations, and compatibility with other preservatives make it a versatile choice for maintaining the quality and safety of cosmetic and personal care products
Consumer Uses:
Dehydroacetic acid is used in the following products: cosmetics and personal care products.
Other release to the environment of Dehydroacetic acid is likely to occur from: indoor use as processing aid and outdoor use as processing aid.
Uses at industrial sites:
Dehydroacetic acid is used in the following products: washing & cleaning products, polymers and laboratory chemicals.
Dehydroacetic acid has an industrial use resulting in manufacture of another substance (use of intermediates).
Dehydroacetic acid is used in the following areas: formulation of mixtures and/or re-packaging.
Dehydroacetic acid is used for the manufacture of: plastic products, chemicals and rubber products.
Release to the environment of Dehydroacetic acid can occur from industrial use: in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid and as processing aid.
Industry Uses:
Intermediate
Preservative
Dehydroacetic acid is widely used in lotions, creams, and other skincare products as a preservative, protecting formulations from microbial contamination and extending shelf life.
Dehydroacetic acid is applied in shampoos, conditioners, and other hair care products, where it prevents the growth of bacteria and fungi, ensuring product safety and longevity.
Dehydroacetic acid is commonly included in face cleansers and makeup removers, where it provides broad-spectrum antimicrobial protection while remaining mild on the skin.
Dehydroacetic acid is essential in natural and organic cosmetic formulations, where it acts as a preservative without impacting pH, making it ideal for "clean label" products.
Dehydroacetic acid is incorporated into serums and eye creams, where it provides preservation benefits, preventing spoilage of sensitive ingredients like peptides and antioxidants.
Dehydroacetic acid is used in sunscreens and after-sun lotions, offering microbial protection for formulations exposed to warm and humid environments.
Dehydroacetic acid is included in dental care products, such as mouthwashes and toothpaste, where it prevents microbial contamination and extends product stability.
Dehydroacetic acid is found in deodorants and antiperspirants, providing safe and effective preservation, especially in formulations with water content.
Dehydroacetic acid is applied in hand sanitizers, where it complements other ingredients by offering additional preservation against bacterial and fungal growth.
Dehydroacetic acid is utilized in wet wipes and other disposable personal care items, ensuring they remain free from microbial contamination during storage and use.
Dehydroacetic acid is used in body and face mists, where it provides stability by preventing microbial growth in water-based formulations.
Dehydroacetic acid is incorporated into baby care products, such as lotions and cleansers, where its mild, safe profile makes it suitable for delicate skin.
Dehydroacetic acid is applied in bath and shower gels, providing reliable preservation for products exposed to moisture and humidity.
Dehydroacetic acid is used in facial masks, especially sheet masks and other products with high water content, where it prevents spoilage and contamination.
Dehydroacetic acid is a key ingredient in cosmetics like foundations, concealers, and mascaras, ensuring product safety and stability throughout their shelf life.
Dehydroacetic acid is an ingredient in liquid and cream-based makeup formulations, where it preserves both the consistency and safety of the product.
Dehydroacetic acid is used in soaps and body washes, where it protects against microbial growth and maintains the product’s integrity.
Dehydroacetic acid is included in pet care products, where it prevents spoilage and contamination in shampoos and grooming sprays.
Benefits of Dehydroacetic Acid:
Dehydroacetic acid is a versatile compound with various benefits, making it valuable in multiple industries.
Here are Dehydroacetic acid's key advantages:
Antimicrobial and Preservative Properties:
Broad-Spectrum Activity:
Effective against bacteria, yeast, and fungi, Dehydroacetic acid is commonly used as a preservative in cosmetics, personal care products, and pharmaceuticals.
Non-Toxic at Low Levels:
Approved for use in regulated amounts, ensuring safety for humans and the environment.
Stability:
Retains Dehydroacetic acid's effectiveness over a wide pH range and temperature conditions, ensuring long shelf life for products.
Application Versatility:
Cosmetics and Personal Care:
Used in creams, lotions, shampoos, and other products to prevent microbial contamination.
Food Industry:
Employed as a preservative to extend the shelf life of certain foods.
Agriculture:
Functions as a fungicide to protect crops from fungal infections.
Biodegradability:
Dehydroacetic acid is biodegradable, minimizing its environmental impact when used in industrial or consumer products.
Compatibility with Other Ingredients:
Works well in combination with other preservatives to enhance overall effectiveness, reducing the amount of preservative required.
Cost-Effectiveness:
Dehydroacetic acid's effectiveness at low concentrations and long shelf life contribute to cost savings in production and storage.
General Manufacturing Information of Dehydroacetic Acid:
Industry Processing Sectors:
Soap, Cleaning Compound, and Toilet Preparation Manufacturing
All Other Basic Organic Chemical Manufacturing
Preparation of Dehydroacetic Acid:
Dehydroacetic acid is prepared by the base-catalysed dimerization of diketene.
Commonly used organic bases include imidazole, DABCO, and pyridine.
The preparation of dehydroacetic acid involves the condensation and cyclization of acetic anhydride, often in the presence of a catalyst such as sulfuric acid or sodium acetate.
The reaction typically occurs under controlled heating at temperatures between 120–150°C, allowing the formation of the characteristic six-membered pyrone ring structure.
In some variations, ketene may be used as a reactive intermediate to enhance the reaction.
Once the reaction is complete, the product is isolated by cooling the reaction mixture and purifying Dehydroacetic acid through recrystallization using solvents like ethanol or water.
This method yields dehydroacetic acid as white to pale yellow crystalline solids, suitable for various applications.
Synthesis of Dehydroacetic Acid:
Dehydroacetic acid (**C8H8O4**) is synthesized through a process that involves acetic acid derivatives.
Below is a detailed method commonly used for Dehydroacetic acid's preparation:
1. Starting Materials:
Acetic Anhydride (CH₃CO)₂O: The primary reactant.
Catalyst: Acidic or basic catalysts (e.g., sulfuric acid or sodium acetate) to facilitate the reaction.
Ketene (Optional): In some methods, ketene (CH₂=C=O) is used as a reactive intermediate.
2. Reaction Mechanism:
The process involves the condensation and cyclization of acetic anhydride under controlled conditions.
The steps include:
1. Condensation: Two molecules of acetic anhydride react to form an intermediate.
2. Cyclization: The intermediate undergoes intramolecular cyclization to form the six-membered pyrone ring structure characteristic of dehydroacetic acid.
3. Procedure:
1. Reactants Mixture:
Mix acetic anhydride with the chosen catalyst in a reaction flask.
Maintain an inert atmosphere if needed to prevent unwanted reactions (e.g., oxidation).
2.Heating:
Heat the mixture to 120–150°C.
Allow the reaction to proceed until the pyrone structure forms (monitored by time or analysis).
3 Cooling:
Cool the reaction mixture.
4. Crystallization and Purification:
Isolate the crude product by filtration.
Purify via recrystallization from ethanol, water, or another suitable solvent to obtain white to pale yellow crystals.
4. Industrial Scale Variants:
On an industrial scale, modifications such as using continuous-flow reactors or optimized catalysts may be applied to increase yield and reduce costs.
5. Notes on Safety and Handling
Use appropriate PPE (gloves, goggles, and lab coats) as reactants can be hazardous.
Work in a well-ventilated area or under a fume hood.
This method produces dehydroacetic acid efficiently and is adaptable for both laboratory and industrial settings.
Origin of Dehydroacetic Acid:
Dehydroacetic acid is synthesized through the reaction of diketene and acetic acid.
Diketene, a highly reactive compound, reacts with acetic acid under controlled conditions to form Dehydroacetic acid.
This process involves careful temperature regulation and purification steps to ensure the purity of the final product.
The synthesized Dehydroacetic acid is then crystallized and dried for use in cosmetics.
History of Dehydroacetic Acid:
Dehydroacetic acid was first synthesized in the late 19th century as part of the growing interest in organic compounds with preservative and antimicrobial properties.
Dehydroacetic acid's unique structure, a six-membered lactone (pyrone) ring, was identified as a stable yet reactive molecule, making it valuable in industrial and pharmaceutical applications.
Over time, Dehydroacetic acid became recognized for its versatility as a preservative in cosmetics, food, and pharmaceuticals due to its broad-spectrum antimicrobial activity.
Dehydroacetic acid also found applications in agriculture as a fungicide.
Advances in organic synthesis in the 20th century refined the methods of production, improving Dehydroacetic acid's yield and purity, solidifying its role in modern chemical industries.
Handling and Storage of Dehydroacetic Acid:
Handling:
Use in a well-ventilated area to minimize dust accumulation.
Avoid skin and eye contact.
Prevent inhalation of dust or fumes.
Do not eat, drink, or smoke while handling the chemical.
Use appropriate PPE: gloves, safety goggles, and dust masks or respirators if necessary.
Storage:
Store in a tightly sealed container in a cool, dry, and well-ventilated area.
Keep away from incompatible substances like strong oxidizing agents and bases.
Protect from moisture, heat, and direct sunlight.
Label storage containers clearly to avoid accidental misuse.
Stability and Reactivity of Dehydroacetic Acid:
Stability:
Stable under normal handling and storage conditions.
Hygroscopic (absorbs moisture from the air), so keep Dehydroacetic acid in dry conditions.
Reactivity:
Reacts with strong oxidizing agents and bases, potentially leading to hazardous conditions.
Decomposition Products:
Decomposition can produce toxic fumes, such as carbon monoxide (CO) and carbon dioxide (CO₂).
Hazardous Reactions:
Avoid exposure to excessive heat or moisture to prevent degradation.
Safety profile of Dehydroacetic Acid:
Dehydroacetic acid is a safe ingredient when used within the recommended concentration levels of 0.6% or less.
Dehydroacetic acid is non-irritating and is approved by regulatory agencies around the world.
However, a patch test is recommended before using any new product containing Dehydroacetic acid.
Since Dehydroacetic acid has synthetic origins, it is suitable for vegan and halal formulations.
First Aid Measures of Dehydroacetic Acid:
Inhalation:
Remove the person to fresh air immediately.
If breathing is difficult, provide oxygen; if not breathing, give artificial respiration.
Seek medical attention if symptoms persist.
Skin Contact:
Wash thoroughly with soap and water for at least 15 minutes.
Remove contaminated clothing and wash before reuse.
If irritation occurs, seek medical attention.
Eye Contact:
Rinse eyes immediately with plenty of water for at least 15 minutes, lifting eyelids occasionally.
Seek immediate medical attention.
Ingestion:
Do NOT induce vomiting unless directed by medical personnel.
Rinse the mouth thoroughly with water and drink small amounts of water.
Seek medical attention immediately.
Firefighting Measures of Dehydroacetic Acid:
Suitable Extinguishing Media:
Use water spray, foam, dry chemical, or carbon dioxide (CO₂).
Specific Hazards:
In a fire, may produce toxic fumes like carbon oxides.
Combustible dust may form explosive mixtures with air.
Protective Equipment:
Firefighters should wear full protective gear, including a self-contained breathing apparatus (SCBA).
Firefighting Precautions:
Move containers from the fire area if it is safe to do so.
Cool containers with water spray to prevent overheating.
Accidental Release Measures of Dehydroacetic Acid:
Personal Precautions:
Evacuate non-essential personnel.
Wear appropriate PPE: gloves, goggles, and respirators if dust is generated.
Environmental Precautions:
Prevent entry into drains, watercourses, or soil to minimize environmental contamination.
Cleanup Procedures:
Contain the spill using inert absorbents like sand or vermiculite.
Sweep up carefully to avoid creating dust.
Place waste in appropriate containers for disposal in accordance with local regulations.
Exposure Controls/Personal Protection of Dehydroacetic Acid:
Exposure Limits:
No specific limits are typically established; follow general dust exposure guidelines.
Engineering Controls:
Use local exhaust ventilation or other engineering controls to maintain airborne levels below recommended exposure limits.
Personal Protective Equipment (PPE):
Respiratory Protection: Use a dust mask or respirator in areas with insufficient ventilation.
Skin Protection:
Wear chemical-resistant gloves.
Eye Protection:
Use safety goggles or face shields.
Body Protection:
Wear protective clothing to prevent skin exposure.
Hygiene Measures:
Wash hands and face thoroughly after handling.
Do not eat, drink, or smoke in areas where the chemical is handled.
Identifiers of Dehydroacetic Acid:
CAS Number: 520-45-6
Abbreviations: DHAA
ChEBI: CHEBI:137426
ChEMBL: ChEMBL284127
ChemSpider: 10177
ECHA InfoCard: 100.007.541
EC Number: 208-293-9:
E number: E265 (preservatives)
MeSH: dehydroacetic+acid
PubChem CID: 122903
UNII: 2KAG279R6R
CompTox Dashboard (EPA): DTXSID801015814 DTXSID6020014, DTXSID801015814
InChI: InChI=1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,11H,1-2H3
Key: JEQRBTDTEKWZBW-UHFFFAOYSA-N
SMILES: CC(=O)C1=C(O)OC(C)=CC1=O
CAS Number: 520-45-6 / 771-03-9 / 16807-48-0
Chem/IUPAC Name: 3-Acetyl-6-methyl-2H-pyran-2,4(3H)-dione
EINECS/ELINCS No: 208-293-9 / 212-227-4 / -
COSING REF No: 33185
CAS number: 520-45-6
EC index number: 607-163-00-2
EC number: 208-293-9
Hill Formula: C₈H₈O₄
Molar Mass: 168.2 g/mol
HS Code: 2932 20 90
Properties of Dehydroacetic Acid:
Chemical formula: C8H8O4
Molar mass: 168.148 g·mol−1
Appearance: White crystals
Melting point: 109 °C; 228 °F; 382 K
Boiling point: 270 °C; 518 °F; 543 K
Molecular Weight: 168.15 g/mol
XLogP3-AA: 0.3
Hydrogen Bond Donor Count: 100
Hydrogen Bond Acceptor Count: 4
Rotatable Bond Count: 1
Exact Mass: 168.04225873 g/mol
Monoisotopic Mass: 168.04225873 g/mol
Topological Polar Surface Area: 60.4Ų
Heavy Atom Count: 12
Complexity: 287
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 1
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Assay: ≥98.0% (T)
form: powder
bp: 270 °C (lit.)
mp: 111-113 °C (lit.)
SMILES string: CC(=O)C1C(=O)OC(C)=CC1=O
InChI: 1S/C8H8O4/c1-4-3-6(10)7(5(2)9)8(11)12-4/h3,7H,1-2H3
InChI key: PGRHXDWITVMQBC-UHFFFAOYSA-N
Boiling point: 270 °C (1013 hPa)
Flash point: 157 °C
Ignition temperature: 336 °C
Melting Point: 111.1 - 111.3 °C
pH value: 4 (2 g/l, H₂O, 20 °C)
Vapor pressure: <0.1 hPa (25 °C)
Bulk density: 700 kg/m3
Solubility: 2 g/l
Specifications of Dehydroacetic Acid:
Assay (acidimetric): ≥ 98.5 %
Melting range (lower value): ≥ 109 °C
Melting range (upper value): ≤ 112 °C
Identity (IR): passes test
Names of Dehydroacetic Acid:
Preferred IUPAC name:
3-Acetyl-2-hydroxy-6-methyl-4H-pyran-4-one
Other names:
Biocide 470F
Methylacetopyronone
