1-Naphtyol/1-Naphthalenol/α-Hydroxynaphthalene/1-Hydroxynaphthalene

English Name: 1-naphthol; 1-Naphthalenol； α- Hydroxynaphthalene； 1-Hydroxynaphthalene

Other names: 1-hydroxynaphthalene; Naphthol; α- Naphthol; α- Thn 

CAS No.: 90-15-3

C10H8O=144.17

Grade: ar

Content: ≥ 99.0%

Melting point: 94 ~ 97 ℃

Sodium hydroxide dissolution test: acceptable

PH test: acceptable

Ethanol dissolution test: qualified

Burning residue (calculated by sulfate): ≤ 0.03%

Physicochemical Properties: white rhombic crystal or crystalline powder. Smell of phenol. There is an unpleasant burning smell. Sensitive to air. It turns black when exposed to light. Can sublimate. It can volatilize with water vapor. Soluble in ethanol, ether, benzene, chloroform and sodium hydroxide solutions, slightly soluble in water. The relative density (d98.74) is 1.0954. Melting point 96 ℃. Boiling point 288 ℃. Refractive index (n98.7d) 1.6206. Flash point 125 ℃. The maximum absorption wavelength is 297, 310, 324nm. Low toxicity, LD50 (rat, oral) 2590mg/kg. Irritating.

Purpose: biochemical research. Colorimetric determination of titanium, niobium, tungsten, germanium, vanadium, nitrite and copper. Determination of tyrosine and protein. Organic synthesis. Manufacturing of dyes and spices.

Save: RT, away from light