ACETONYLACETONE
Hexane-2,5-dione
ACETONYLACETONE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.
Regulatory evidence by market
No rule for this ingredient has been imported for any of the 13 markets tracked here.
That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.
Chemical identity and properties
2,5-Hexanedione
2,5-hexanedione is a diketone that is hexane substituted by oxo groups at positions 2 and 5. It is a toxic metabolite of hexane and of 2-hexanone. It has a role as a neurotoxin and a human xenobiotic metabolite. It is a diketone and a methyl ketone. It derives from a hydride of a hexane. — ChEBI
- IUPAC name
- hexane-2,5-dione
- Molecular formula
- C6H10O2
- Molecular weight
- 114.14 g/mol
- Exact mass
- 114.068079557 Da
- XLogP3
- -0.3
- Topological polar surface area
- 34.1 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 2
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
16 more reported names
External database identifiers
- ChEBI:CHEBI:85014
- ChEMBL:CHEMBL1564795
- EPA DTXSID:DTXSID8030138
- PubMed:33197454
- PubMed:32860822
- PubMed:32522579
- PubMed:31760062
- PubMed:27466211
- PubMed:22967723
- PubMed:22953206
- PubMed:22952946
- PubMed:22931767
- PubMed:22841600
- PubMed:22804983
- PubMed:22382377
Evidence from additional scientific databases
NIH PubChem PUG-View
Attributed physical-property, hazard, environmental and use annotations.
- Autoignition Temperature: 920 °F (NTP, 1992) Source: CAMEO Chemicals
- Boiling Point: 376 °F at 760 mmHg (NTP, 1992) Source: CAMEO Chemicals
- Density: 0.9737 at 68 °F (NTP, 1992) - Less dense than water; will float Source: CAMEO Chemicals
- Flash Point: 174 °F (NTP, 1992) Source: CAMEO Chemicals
- Melting Point: 22.1 °F (NTP, 1992) Source: CAMEO Chemicals
- Physical Description: 2,5-hexanedione is a clear colorless to amber liquid with a sweet aromatic odor. (NTP, 1992) Source: CAMEO Chemicals
- Physical Description: Liquid Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Liquid that slowly turns yellow; [Merck Index] Colorless to amber liquid with a sweet odor; [CAMEO] Yellow liquid; [Alfa Aesar MSDS] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Solubility: greater than or equal to 100 mg/mL at 72 °F (NTP, 1992) Source: CAMEO Chemicals
- Vapor Pressure: 0.43 mmHg at 68 °F ; 1.6 mmHg at 77 °F (NTP, 1992) Source: CAMEO Chemicals
- Vapor Pressure: 2.93 [mmHg] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- First Aid: EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.; SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.; INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) shou Source: CAMEO Chemicals
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (97.9%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (99.3%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H373 (97.2%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P264, P264+P265, P280, P302+P352, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 143 reports by companies from 14 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Signal: Danger Source: NITE-CMC
- GHS Hazard Statements: H227: Combustible liquid [Warning Flammable liquids]; H302: Harmful if swallowed [Warning Acute toxicity, oral]; H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]; H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure] Source: NITE-CMC
- Precautionary Statement Codes: P210, P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P304+P340, P305+P351+P338, P319, P330, P337+P317, P370+P378, P403, P403+P233, P405, and P501 (click each P-code to see the statement) Source: NITE-CMC
- Industry Uses: Intermediate Source: EPA Chemical Data Reporting (CDR)
- Sources/Uses: Used as a solvent for cellulose acetate, roll-coating inks, lacquers, and stains; as an intermediate for pharmaceuticals and photographic chemicals; and in electroplating; [NTP] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Industrial Processes with risk of exposure: Electroplating [Category: Plate]; Painting (Solvents) [Category: Paint]; Textiles (Printing, Dyeing, or Finishing) [Category: Industry] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Inventory details for ACETONYLACETONE
INCI name
ACETONYLACETONE
Description
Hexane-2,5-dione
Record provenance
- Inventory reference
- 39008
- Imported identity
- ACETONYLACETONE
- Source update
- 02/03/2011
Annex records for ACETONYLACETONE
Key data
Related inventory evidence
Ingredients with overlapping formulation functions
Additional official and scientific sources
11 external databases to check this identity in
Each link searches that source for this identity. What each source is, and its legal weight
How ACETONYLACETONE appears in the CosIng inventory
The CosIng inventory lists ACETONYLACETONE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.
ACETONYLACETONE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.
Frequently asked questions
Source note for ACETONYLACETONE
This page reproduces the CosIng inventory entry for ACETONYLACETONE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.
Use this inventory page to research ACETONYLACETONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
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