2-Naphthol/β-Hydroxynaphthalene/2-Hydroxynaphthalene/Isonaphthol/2-Naphthalenol/C.I.37500

English Name: 2-naphthol; β- Hydroxynaphthalene； 2-Hydroxynaphthalene； Isonaphthol； 2-Naphthalenol； C.I.37500

Other names: binaphthol; Ethyl naphthol; Isonaphthol; β- Naphthol; β- Hydroxynaphthalene; 2-hydroxynaphthalene

CAS No.: 135-19-3

C10H8O=144.17

Grade: ar

Content: ≥ 99.0%

Melting point: 121 ~ 123 ℃

Naphthol: acceptable

Naphthalene: acceptable

Ethanol dissolution test: qualified

Aqueous solution reaction: acceptable

Burning residue: ≤ 0.05%

Physicochemical Properties: white or very light yellow crystalline powder or thin fragments. Slightly smell of phenol. Stored for a long time or encountered with light, the color gradually deepens. Heating sublimation. It can volatilize with ethanol or water vapor. It can reduce ammonia silver nitrate. 1g is dissolved in 1000ml water, 80ml boiling water, 0.8ml ethanol, 17ml chloroform, 1.3ml ether. Soluble in glycerol, olive oil and sodium hydroxide solution. The relative density is 1.22. Melting point 121 ~ 123 ℃. The boiling point is 285 ~ 286 ℃. Flash point 161 ℃. Maximum absorption wavelength (95% ethanol) 226, 265, 275, 286, 320, 331nm（ ε 91194、3911、4559、3301、1861、2163)。 Low toxicity, LD50 (rat, oral) 2420mg/kg. Irritating.

Purpose: biochemical research. Determination of bromine, chlorine, chlorate, niobium, copper, nitrite and potassium. Determination of carbon monoxide, copper, nitrite and potassium. Qualitative determination of allyl alcohol, methanol, chloroform, etc. Fluorometric determination of phenol sulfonyltransferase substrate. Ethylene absorbent. Fluorescent indicator. Acid base indicator. Dyes. Organic synthesis.

Save: RT, away from light