Ingredient Dictionary

2,6-DIMETHYL-4-HEPTANONE

2-Methyl-4-heptanone is a ketone.

Definition

2-Methyl-4-heptanone is a ketone.

Source: PubChem

US FDA substance register · UNII V52W30H1BU · registered name DIISOBUTYL KETONE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Gives the product a scentPERFUMING

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

More data — names, identifiers, properties, test records, literature

Names & identifiers

2,6-DIMETHYL-4-HEPTANONEINCI4-Heptanone, 2,6-dimethyl-Synonym

CAS No.chemical registry number: 108-83-8
EC No.EU chemical inventory number: 203-620-1
DTXSIDUS EPA chemical ID: DTXSID4025080
DTXCIDUS EPA compound ID: DTXCID905080

IUPAC: 2,6-Dimethylheptan-4-one
Molecular formula: C9H18O
Molecular weight: 142.242 g/mol

Measured properties

Appearance: Diisobutyl ketone appears as a clear colorless liquid. Flash point 140 °F. Less dense than water and insoluble in water. Vapors heavier than air. · CBI, Liquid
Odour: Peppermint odor · Mild, sweet odor
Boiling point: 331 °F at 760 mmHg (NTP, 1992) · 169.4 °C
Melting point: -51.5 °F (NTP, 1992) · -41.5 °C
Solubility: Slightly soluble (NTP, 1992) · Miscible with ethanol, ether, soluble in carbon tetrachloride
Density: 0.806 at 68 °F (USCG, 1999) - Less dense than water, will float · 0.8062 at 20 °C/4 °C
Colour: colourless
Melting/freezing point: -42 ℃
Initial boiling point and range: 168 ℃
Flash point: 49 ℃(c.c.)
Evaporation rate: 0.2
Upper/lower flammability or explosive limits: 6.2 / 0.8 %
Vapour pressure: 0.23 ㎪(20℃)
Water solubility: 0.264 g/100㎖(24 ℃)
Vapour density: 4.9
Relative density: 0.81
n-Octanol/water partition coefficient (Kow): 2.56 (est.)
Auto-ignition temperature: 396 ℃
Viscosity: 0.869 cP(70 ℉)
Molecular weight: 142.2402

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 24 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.

Solvent12
Binder4
Fragrance2
Flavouring and nutrient2
Film former1
Intermediate1
Solids separation (precipitating) agent, not other1
Processing aids not otherwise specified1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

6 skin studies and 4 eye studies are on record.

Classed as low6

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 10 studies

Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Not classified
Skin Sensitization · Screening
Not classified
Skin Irritation · Screening
Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to OECD Guideline 406 (Skin Sensitisation)
Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) equivalent or similar to
Category 6.3B (Category 3)
Skin Irritation · Read Across
Category 2B
Eye Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) equivalent or similar to