Ingredient Dictionary

DIMETHYLHYDROQUINONE

1,4-Dimethoxybenzene is a dimethoxybenzene.

Definition

1,4-Dimethoxybenzene is a dimethoxybenzene.

Source: PubChem

US FDA substance register · UNII 24WC6T6X0G · registered name 1,4-DIMETHOXYBENZENE · 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

DIMETHYLHYDROQUINONEINCIBenzene, 1,4-dimethoxy-Synonym

CAS No.chemical registry number: 150-78-7
EC No.EU chemical inventory number: 205-771-9
DTXSIDUS EPA chemical ID: DTXSID0022014
DTXCIDUS EPA compound ID: DTXCID102014

IUPAC: 1,4-Dimethoxybenzene
Molecular formula: C8H10O2
Molecular weight: 138.166 g/mol

Measured properties

Appearance: 1,4-dimethoxybenzene appears as colorless crystals. (NTP, 1992) · White solid with an odor of sweet clover, [Hawley] Colorless solid, [CAMEO] White crystalline chips, [MSDSonline]
Odour: SWEET CLOVER ODOR · SWEET, NUT-LIKE AROMA
Boiling point: 414.7 °F at 760 mmHg (NTP, 1992) · 212.6 °C
Melting point: 133 °F (NTP, 1992) · 58-60 °C
Solubility: Slightly soluble (NTP, 1992) · SLIGHTLY SOL IN WATER, VERY SOL IN ETHER, BENZENE
Density: 1.053 at 131 °F (NTP, 1992) - Denser than water, will sink · 1.0526 @ 55 °C/55 °C
Stability: QUITE STABLE UPON STORAGE /HYDROQUINONE ETHERS/
Viscosity: 1.04 CENTIPOISE @ 65 °C · 1.04 cP (at 65C)
Colour: white
Melting/freezing point: 58~60 ℃
Initial boiling point and range: 213 ℃
Flash point: 88 ℃
Upper/lower flammability or explosive limits: 5.6 / 1.2 %
Vapour pressure: 0.0873 ㎜Hg (at 25C)
Vapour density: 4.8 ()
Relative density: 1.0526 ( at 55C)
n-Octanol/water partition coefficient (Kow): 2.04
Auto-ignition temperature: 438 ℃
Molecular weight: 138.17

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 6 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.

Fragrance4
Flavouring and nutrient2

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

1 skin studies and 1 eye studies are on record.

Classed as low2

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 2 studies

Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to