Ingredient Dictionary

P-CYMENE

P-cymene is a monoterpene that is toluene substituted by an isopropyl group at position 4.

How much products actually contain

No product states its amount yet.

Of the products containing it, 0 list it before the 1% line and 10 after it (usually 1% or less).

Products using this ingredient

10 of 10 confirmed · likeliest to carry enough first

Definition

P-cymene is a monoterpene that is toluene substituted by an isopropyl group at position 4. It has a role as a volatile oil component, a plant metabolite and a human urinary metabolite. It is a member of toluenes and a monoterpene.

Source: PubChem

US FDA substance register · UNII 1G1C8T1N7Q · registered name P-CYMENE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Listed as a fragrance-composition material (not a claim that it adds scent)FRAGRANCE

Safety & regulatory references

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

Source: Korea toxic substances GHS register (NIER)

Other restriction: ban substances that deplete the ozone layer

Source: EU CosIng ingredient list

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

Official labels & definitions

JCIA labelling name ｐ－シメン: 本品は、次の化学式で表される芳香族炭化水素である。

Source: JCIA labelling names (Japan)

Names & identifiers

P-CYMENEINCIBenzene, 1-methyl-4-(1-methylethyl)-Synonymp-시멘Korean label name (MFDS standard)ｐ－シメンJapanese labelling name

CAS No.chemical registry number: 99-87-6
EC No.EU chemical inventory number: 202-796-7
DTXSIDUS EPA chemical ID: DTXSID3026645
DTXCIDUS EPA compound ID: DTXCID006645

IUPAC: 1-Methyl-4-(propan-2-yl)benzene
Molecular formula: C10H14
Molecular weight: 134.222 g/mol

Measured properties

Appearance: P-cymene is a colorless liquid with a mild pleasant odor. Floats on water. (USCG, 1999) · Liquid
Odour: Sweetish aromatic odor · Mild pleasant odor
Boiling point: 351 °F at 760 mmHg (USCG, 1999) · 177.10 °C
Melting point: -90.2 °F (USCG, 1999) · -68.9 °C
Solubility: In water, 23.4 mg/L at 25 °C · Miscible with ethanol, acetone, benzene, carbon tetrachloride and petroleum ether
Density: 0.857 at 68 °F (USCG, 1999) - Less dense than water, will float · 0.8573 g/cu cm at 20 °C
Melting/freezing point: -67.94 ℃
Initial boiling point and range: 172 ℃
Flash point: 48 ℃
Upper/lower flammability or explosive limits: 5.6 / 0.7 %
Vapour pressure: 1.47 ㎜Hg
Water solubility: 0.0051 g/100㎖
Vapour density: 4.62
Relative density: 0.8573
n-Octanol/water partition coefficient (Kow): 4.10
Auto-ignition temperature: 435 ℃
Viscosity: 0.81 ㎟/s(40℃)
Molecular weight: 134.218

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 52 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.

Fragrance45
Flavouring and nutrient3
Deodorizer3
Intermediate1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 2 eye studies are on record.

Classed as moderate1

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 5 studies

Classification not possible
Skin Irritation · Screening
Category 6.3A (Category 2)
Skin Irritation · Read Across
Classification not possible
Skin Sensitization · Screening
Classification not possible
Eye Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across