1,4-Naphthoquinone

Description

1,4-Naphthoquinone · CAS 130-15-4 · C10H6O2. UNII RBF5ZU7R7K. Melting Point: 277 °F (NTP, 1992); Melting Point: 128.5 °C; Melting Point: 126 °C.

Identification

CAS Registry Number	130-15-4
PubChem CID	8530
Molecular formula	C10H6O2
IUPAC name	naphthalene-1,4-dione
UNII (FDA)	RBF5ZU7R7K

Computed Descriptors

Molecular Weight	158.15
XLogP3	1.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	158.036779430
Monoisotopic Mass	158.036779430
Topological Polar Surface Area	34.1
Heavy Atom Count	12
Formal Charge	0

Physical & Chemical Properties

Melting Point	277 °F (NTP, 1992)
Melting Point	128.5 °C
Melting Point	126 °C
Solubility	In water, 0.35 g/100 ml at 25 °C
Density	1.422
Density	1.4 g/cm³
Density	1.422 no temp
Vapor Pressure	0.00018 [mmHg]
Vapor Pressure	2.6 Pa at 50 °C (= 0.0195 mm Hg at 50 °C)
Vapor Pressure	0.0195 [mm Hg] @50 °C

Physical description & handling notes

• 1,4-naphthoquinone appears as yellow needles or brownish green powder with an odor of benzoquinone. (NTP, 1992)
• Dry Powder
• Yellow solid with a pungent odor; [ICSC] "Begins to sublimes below 100 deg C." [Merck Index]
• YELLOW CRYSTALS OR FLAKES WITH PUNGENT ODOUR.
• Yellow triclinic needles from alcohol or petroleum ether
• YELLOW POWDER

Regulatory Status

GHS notification summary	0.8% (5 / 620)

GHS Hazard Classification

GHS notification summary	0.8% (5 / 620)
Reported hazard statements	H301 (99.2%), H314 (32.3%), H315 (66.9%), H317 (88.4%), H318 (30.3%), H319 (66.9%), H330 (95%), H334 (17.1%)

Documented Uses

• Used as a polymerization regulator, fungicide, algicide, and to make dyes and pharmaceuticals; [Hawley] Used as a chemical intermediate, corrosion inhibitor, and stabilizer for transformer oils; [HSDB]
• Polymerization regulator for rubber and polyester resins; synthesis of dyes and pharmaceuticals
• Chemical intermediate for dichlone, a fungicide (non-US use)
• Chemical intermediate for dithianon, a fungicide (non-US use)
• 1,4-Naphthoquinone is industrially significant as an intermediate in anthraquinone synthesis.
• As a polymerization regulator and as a hardener for photochemically cross-linked polyesters. It is used as a corrosion inhibitor and as a stabilizer for transformer oils. It reacts with cyclic aryl phosphinic acid esters to give 1,4-naphthalenediol adducts, which can be used for the production of thermally stable, flame-resistant polyesters.

Synonyms

1,4-NAPHTHOQUINONE; 130-15-4; naphthalene-1,4-dione; 1,4-Naphthalenedione; NAPHTHOQUINONE; p-Naphthoquinone; alpha-Naphthoquinone; 1,4-Naphthylquinone; 1,4-Dihydro-1,4-diketonaphthalene; USAF CY-10; 1,4-dihydronaphthalene-1,4-dione; DTXSID5040704; RBF5ZU7R7K; CHEBI:27418; NSC-9583; DTXCID3020704

Frequently Asked Questions

What are the CAS number and molecular formula of 1,4-Naphthoquinone?

CAS 130-15-4; molecular formula C10H6O2; molecular weight — g/mol.

What other names is 1,4-Naphthoquinone known by?

1,4-NAPHTHOQUINONE, 130-15-4, naphthalene-1,4-dione, 1,4-Naphthalenedione, NAPHTHOQUINONE, p-Naphthoquinone.

Is 1,4-Naphthoquinone classified as hazardous?

0.8% of GHS notifications report no hazard classification (5 of 620).

What are the key physical properties of 1,4-Naphthoquinone?

Melting Point: 277 °F (NTP, 1992); Melting Point: 128.5 °C; Melting Point: 126 °C; Solubility: In water, 0.35 g/100 ml at 25 °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.