Tropolone is a cyclic ketone that is cyclohepta-2,4,6-trien-1-one substituted by a hydroxy group at position 2.
How much products actually contain
No product states its amount yet.
Of the products containing it, 19 list it before the 1% line and 69 after it (usually 1% or less).
Products using this ingredient
12 of 88 confirmed · likeliest to carry enough first · See all 88
Scotch PorterScotch Porter Face Lotion
MONZALBari-Scalp Moringa Hair Vinegar Water Rinse
Scotch PorterScotch Porter Twist & Curl Gel Cream
coxirIntensive EGF Peptide Serum
NEOGENNeogen Real Fresh Foam Blueberry 160ml
NEOGENNeogen Real Fresh Foam Cranberry 160ml
Cos De BAHAT3 Facial Toner
NEOGENNeogen Real Ferment Micro Essence 150ml
Cos De BAHAES Serum
Cos De BAHACG Gel Cream
ArheeMugwort PDRN Calming Bubble Toner Pack
Cos De BAHATT Serum
Definition
Tropolone is a cyclic ketone that is cyclohepta-2,4,6-trien-1-one substituted by a hydroxy group at position 2. It is a toxin produced by the agricultural pathogen Burkholderia plantarii. It has a role as a fungicide, a toxin and a bacterial metabolite. It is an alpha-hydroxy ketone, an enol and a cyclic ketone. It derives from a hydride of a cyclohepta-1,3,5-triene.
Source: PubChem
US FDA substance register · UNII 7L6DL16P1T · registered name TROPOLONE · 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 トロポロン: 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
- 533-75-5
- EC No.EU chemical inventory number
- 208-577-2
- DTXSIDUS EPA chemical ID
- DTXSID8049416
- DTXCIDUS EPA compound ID
- DTXCID7029376
- IUPAC
- 2-Hydroxycyclohepta-2,4,6-trien-1-one
- Molecular formula
- C7H6O2
- Molecular weight
- 122.123 g/mol
Measured properties
- Appearance
- solid
- Melting/freezing point
- 50.8 ℃
- Initial boiling point and range
- 66~67 ℃ (0.1 torr)
- Flash point
- &, gt, 112 ℃
- Vapour pressure
- (6.79E-004, 25℃, est.)
- Water solubility
- 40900 ㎎/ℓ (25℃)
- n-Octanol/water partition coefficient (Kow)
- 0.53
- Molecular weight
- 122.122
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: KOSHA safety data sheets (Korea)
What products actually use it for
What the 1 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.
- Softener and conditioner1
Source: US EPA CompTox dashboard
Related literature
- Iron(III)–Tropolone Complex as a Topical Agent Against Drug-Resistant MRSA Skin Infections · 2026
- Synthesis, structure, ionochromic and cytotoxic properties of new 2-(indolin-2-yl)-1,3-tropolones · 2025
- Hinokitiol, a natural tropolone derivative attenuates inflammoalgesia induced by LPS in experimental animals · 2024
- Purificação parcial e caracterização da enzima polifenol oxidase em manjericão ‘Genovese’ · 2024
- Virtual Screening of Selected Natural Products as Human Tyrosinase-Related Protein 1 Blockers · 2021
Linked databases 19
- ChEBI
- ChEMBL
- China inventory of existing ingredients (IECIC)
- 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
- 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 · English · Japanese · Chinese