2-Naphthol

Description

2-Naphthol is identified by CAS 135-19-3, molecular formula C10H8O and molecular weight 144.06 g/mol. UNII P2Z71CIK5H; ChEBI 10432; InChIKey JWAZRIHNYRIHIV-UHFFFAOYSA-N. Boiling Point: 285 °C; Boiling Point: 285.00 to 286.00 °C. @ 760.00 mm Hg; Boiling Point: 286 °C @760 [mm Hg].

Identification

CAS Registry Number	135-19-3
PubChem CID	8663
Molecular formula	C10H8O
Molecular weight	144.06 g/mol
IUPAC name	naphthalen-2-ol
InChIKey	JWAZRIHNYRIHIV-UHFFFAOYSA-N
UNII (FDA)	P2Z71CIK5H
ChEBI ID	CHEBI:10432

Computed Descriptors

Molecular Weight	144.17
XLogP3	2.7
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	144.057514874
Monoisotopic Mass	144.057514874
Topological Polar Surface Area	20.2
Heavy Atom Count	11
Formal Charge	0

Physical & Chemical Properties

Boiling Point	285 °C
Boiling Point	285.00 to 286.00 °C. @ 760.00 mm Hg
Boiling Point	286 °C @760 [mm Hg]
Melting Point	121.6 °C
Melting Point	123 °C
Melting Point	122 °C
Flash Point	152.7 °C
Flash Point	153 °C
Flash Point	153 °C (307 °F) (Closed cup)
Flash Point	307 °F (153 °C) (Closed cup)

Physical description & handling notes

• Liquid; CBI; Other Solid; Dry Powder
• White solid; Darkens upon aging and exposure to sunlight; [Hawley] Tan chips with a phenol-like odor; [MSDSonline]
• Solid
• WHITE-TO-YELLOWISH-WHITE CRYSTALS WITH CHARACTERISTIC ODOUR.
• White, lustrious, bulky leaflets or white powder. Darkens with age
• Faint phenol-like odor

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS

GHS Hazard Classification

Reported hazard statements	H302, H332, H400, H317 (62%), H318 (17.7%), H401, H412, H319

Documented Uses

• Used to make dyes, pigments, fungicides, insecticides, pharmaceuticals, and perfumes; Also used as antioxidants for rubber, fats, and oils; as an antiseptic; for lubrication of steam turbines, electric motors, hydraulic equipment, and instruments; and formerly as an anthelmintic; [HSDB] Also used as an additive in electroplating, developer in dyeing and printing of fabrics, in tanneries, and in the paints-lacquers-varnishes industry; [IUCLID]
• Electroplating [Category: Plate]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Using Disinfectants or Biocides [Category: Clean]
• Leather Tanning and Processing [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]

Synonyms

2-NAPHTHOL; naphthalen-2-ol; 135-19-3; 2-Naphthalenol; beta-naphthol; Betanaphthol; 2-Hydroxynaphthalene; Isonaphthol; Developer A; Developer BN; Naphthol B; 2-Naphtol; beta-Hydroxynaphthalene; Azogen developer A; beta-Naphtol; beta-Napthol

Frequently Asked Questions

What are the CAS number and molecular formula of 2-Naphthol?

CAS 135-19-3; molecular formula C10H8O; molecular weight 144.06 g/mol.

What other names is 2-Naphthol known by?

2-NAPHTHOL, naphthalen-2-ol, 135-19-3, 2-Naphthalenol, beta-naphthol, Betanaphthol.

What is the regulatory status of 2-Naphthol?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is 2-Naphthol classified as hazardous?

Hazard statements reported: H302, H332, H400, H317, H318.

What are the key physical properties of 2-Naphthol?

Boiling Point: 285 °C; Boiling Point: 285.00 to 286.00 °C. @ 760.00 mm Hg; Boiling Point: 286 °C @760 [mm Hg]; Melting Point: 121.6 °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.