2-Naphthol
Agent Name
2-Naphthol
Alternative Name
beta-Naphthol
CAS Number
135-19-3
Formula
C10-H8-O
Major Category
Other Classes
Synonyms
beta-Naphthol; 2-Hydroxynaphthalene; 2-Naftol [Dutch]; 2-Naftolo [Italian]; 2-Naphthalenol; 2-Naphtol [French]; Azogen Developer A; Betanaphthol; C.I. 37500; C.I. Azoic Coupling Component 1; C.I. Developer 5; Developer A; Developer AMS; Developer BN; Developer sodium; Isonaphthol; NAPHTHOL, BETA; Naphthol B; beta-Hydroxynaphthalene; beta-Monoxynaphthalene; beta-Naftol [Dutch]; beta-Naftolo [Italian]; beta-Naphthol; beta-Naphthyl alcohol; beta-Naphthyl hydroxide; beta-Naphtol [German]; beta-Napthol; [ChemIDplus] UN3077
Category
Naphthols
Description
White solid; Darkens upon aging and exposure to sunlight; [Hawley] Tan chips with a phenol-like odor; [MSDSonline]
Sources/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]
Comments
A severe eye irritant; May cause skin sensitization; "The substance may have effects on the kidneys, blood and eyes, resulting in kidney impairment, anaemia and lens opacities." [ICSC] Emergency medical treatment: see "Phenol." [HSDB] An irritant; May cause injury to eyes; May be absorbed through skin resulting in kidney injury; [MSDSonline]
Biomedical References
Exposure Assessment
Odor Threshold Low
0.01 ppm
Odor Threshold High
11.4 ppm
Lethal Concentration
LC50 (rat) = 2,200 mg/m3/4h
Explanatory Notes
Flash point = 152.7 deg C; [Hawley] VP = 9.9 mm Hg at 144 deg C; [HSDB] Odor threshold from HSDB; The Guide in the Emergency Response Guidebook is for "Environmentally hazardous substances, solid, n.o.s."
NFPA
must be preheated
Adverse Effects
Skin Sensitizer
Yes
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: