6383. 1-Naphthol

Nomenclature

CAS number: 90-15-3
1-Naphthalenol; α-naphthol; alpha-naphthol; α-hydroxynaphthalene.
C10H8O; mol wt 144.17.
C 83.31%, H 5.59%, O 11.10%.

Description and references

Prepd by fusing the sodium salt of α-naphthalenesulfonic acid with NaOH: Tyrer, US 2407044; US 2407055; US 2451996 (1946, 1946, 1948); by oxidation of naphthalene: Loeb, US 3033903 (1962 to Union Carbide). Toxicity data: H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 23, 95 (1962).

Chemical structure

Properties

Prisms, mp 96°. Phenolic odor; disagreeable, burning taste. bp 288°; bp40 184°. d498.7 1.0954. uv max: 297, 310, 324 nm. Sublimable; volatile with steam. Darkens in light; reduces ammoniacal silver nitrate. Slightly sol in water, freely in alcohol, benzene, chloroform, ether, alkali hydroxide solns. Protect from light. LD50 orally in rats: 2.59 g/kg (Smyth).

Caution

See 2-Naphthol.

Use

Manuf dyes, intermediates, synthetic perfumes; also in microscopy.