Hydroquinone Dimethyl

Description

p-Dimethoxybenzene is identified by CAS 150-78-7, molecular formula C8H10O2 and molecular weight 138.07 g/mol. UNII 24WC6T6X0G; ChEBI 179261; InChIKey OHBQPCCCRFSCAX-UHFFFAOYSA-N. Boiling Point: 414.7 °F at 760 mmHg (NTP, 1992); Boiling Point: 212.6 °C; Boiling Point: 210.00 to 213.00 °C. @ 760.00 mm Hg.

Identification

CAS Registry Number	150-78-7
PubChem CID	9016
Molecular formula	C8H10O2
Molecular weight	138.07 g/mol
IUPAC name	1,4-dimethoxybenzene
InChIKey	OHBQPCCCRFSCAX-UHFFFAOYSA-N
UNII (FDA)	24WC6T6X0G
ChEBI ID	CHEBI:179261
FEMA number	2386
JECFA number	1250

Computed Descriptors

Molecular Weight	138.16
XLogP3	2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	2
Exact Mass	138.068079557
Monoisotopic Mass	138.068079557
Topological Polar Surface Area	18.5
Heavy Atom Count	10
Formal Charge	0

Physical & Chemical Properties

Boiling Point	414.7 °F at 760 mmHg (NTP, 1992)
Boiling Point	212.6 °C
Boiling Point	210.00 to 213.00 °C. @ 760.00 mm Hg
Boiling Point	212 °C
Melting Point	133 °F (NTP, 1992)
Melting Point	58-60 °C
Melting Point	55 - 56 °C
Flash Point	88 °C
Solubility	1:10 IN 95% ALCOHOL
Density	1.0526 @ 55 °C/55 °C

Physical description & handling notes

• 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]
• Solid
• WHITE FLAKES WITH CHARACTERISTIC ODOUR.
• White crystals
• LEAFLETS FROM WATER

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Green No safety concern at current levels of intake when used as a flavouring agent
GHS notification summary	97.5% (1792 / 1838)

GHS Hazard Classification

GHS notification summary	97.5% (1792 / 1838)

Documented Uses

• Used as a weathering agent in paints and plastics, a fixative in perfumes, and a flavoring additive; Also used in dyes, as a resin intermediate, and in cosmetics and suntan creams; [Hawley]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• WEATHERING AGENT IN PAINTS & PLASTICS; FIXATIVE IN PERFUMES; DYES; RESIN INT; COSMETICS; FLAVORING
• HYDROQUINONE DIMETHYL ETHER IS USED AS INT IN MFR OF CERTAIN NAPHTHOL DYES & AS WEATHERING AGENT FOR PAINTS & PLASTICS. BECAUSE OF ITS FRAGRANT ODOR, IS ALSO USED...IN SOAP PERFUMES, LOTIONS, & CREAMS.
• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index

Synonyms

1,4-Dimethoxybenzene; 150-78-7; p-Dimethoxybenzene; p-Methoxyanisole; HYDROQUINONE DIMETHYL ETHER; Benzene, 1,4-dimethoxy-; Benzene, p-dimethoxy-; 4-Methoxyanisole; Quinol dimethyl ether; 1,4-Dimethoxybenzol; Dimethylhydroquinone ether; Dimethyl ether hydroquinone; USAF AN-9; Dimethyl hydroquinone; Hydroquinone, dimethyl ether; Methyl p-methoxyphenyl ether

Frequently Asked Questions

What are the CAS number and molecular formula of p-Dimethoxybenzene?

CAS 150-78-7; molecular formula C8H10O2; molecular weight 138.07 g/mol.

What other names is p-Dimethoxybenzene known by?

1,4-Dimethoxybenzene, 150-78-7, p-Dimethoxybenzene, p-Methoxyanisole, HYDROQUINONE DIMETHYL ETHER, Benzene, 1,4-dimethoxy-.

What is the regulatory status of p-Dimethoxybenzene?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; Flavoring Agents.

Is p-Dimethoxybenzene classified as hazardous?

97.5% of GHS notifications report no hazard classification (1792 of 1838).

What are the key physical properties of p-Dimethoxybenzene?

Boiling Point: 414.7 °F at 760 mmHg (NTP, 1992); Boiling Point: 212.6 °C; Boiling Point: 210.00 to 213.00 °C. @ 760.00 mm Hg; Boiling Point: 212 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.