3-hydroxy-2-methyl-4-pyrone is a member of 4-pyranones.
How much products actually contain
No product states its amount yet.
Of the products containing it, 3 list it before the 1% line and 0 after it (usually 1% or less).
Products using this ingredient
3 of 3 confirmed · likeliest to carry enough first
Definition
3-hydroxy-2-methyl-4-pyrone is a member of 4-pyranones. It has a role as a metabolite.
Source: PubChem
US FDA substance register · UNII 3A9RD92BS4 · registered name Maltol · single chemical substance
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name マルトール: 本品は、次の化学式で表される有機化合物である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 118-71-8
- EC No.EU chemical inventory number
- 204-271-8
- DTXSIDUS EPA chemical ID
- DTXSID0025523
- DTXCIDUS EPA compound ID
- DTXCID305523
- IUPAC
- 3-Hydroxy-2-methyl-4H-pyran-4-one
- Molecular formula
- C6H6O3
- Molecular weight
- 126.111 g/mol
Measured properties
- Appearance
- Maltol is a white crystalline powder with a fragrant caramel-butterscotch odor. pH (5% aqueous solution) 5.3. (NTP, 1992) · Other Solid, Dry Powder, Liquid
- Odour
- Fragrant, caramel-like odor · Characteristic caramel-butterscotch odor and suggestive of a fruity-strawberry aroma in dilute solution
- Boiling point
- 199 °F at 760 mmHg (Sublimes) (NTP, 1992) · Sublimes at 93 °C
- Melting point
- 324 to 327 °F (NTP, 1992) · 161.5 °C
- Solubility
- 1 to 10 mg/mL at 72 °F (NTP, 1992) · In water, 10900 mg/L at 15 °C
- Stability
- Stable under recommended storage conditions.
- pH
- pH of 0.5% aqueous solution = 5.3
- Dissociation constant
- pKa = 8.6
- Melting/freezing point
- 161.5 ℃
- Vapour pressure
- 0.000507 ㎜Hg (25 deg c EST)
- Water solubility
- 10900 ㎎/ℓ (1.09E+04 mg/L 15 deg c)
- n-Octanol/water partition coefficient (Kow)
- 0.09
- Molecular weight
- 126.12
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: PubChem · KOSHA safety data sheets (Korea)
What products actually use it for
What the 54 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Fragrance42
- Flavouring and nutrient7
- Deodorizer2
- Humectant2
- Processing aids not otherwise specified1
Source: US EPA CompTox dashboard
Related literature
- Antioxidant and anti-Inflammatory effects of maltol on inflammasome activation in macrophages and mice · 2024
- Maltol, a compound in Korean Red Ginseng, attenuates the Staphylococcus aureus–induced inflammasome activation in the skin · 2024
- Maltol has anti-cancer effects via modulating PD-L1 signaling pathway in B16F10 cells · 2023
- Maltol, a Natural Flavor Enhancer, Inhibits NLRP3 and Non-Canonical Inflammasome Activation · 2022
- The Antimicrobial Mode of Action of Maltol and Its Synergistic Efficacy with Selected Cationic Surfactants · 2021
Linked databases 18
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- EU CosIng ingredient list 2
- JCIA labelling names (Japan)
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- NIST Chemistry WebBook
- PubChem 2
- Tlooto literature search 2 3 4 5
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · Korean · English · Japanese · Chinese