1-Naphthol CAS 90-15-3 is an organic compound with the molecular formula C10H8O. It is a white crystalline powder with an unpleasant phenol odor. Soluble in ethanol, ether, chloroform, and alkaline solutions, insoluble in water. Toxic. Swallowing or absorption through the skin can cause poisoning, with symptoms such as vomiting, diarrhea, abdominal pain, anemia, and collapse. Irritating to the eyes and mucous membranes.

Chinese name: 1-Naphthol

Foreign name: α- Naphthol; 1-hydroxynaphthhalene; 1-naphthalenol

Nickname: 1-Methylnaphthol; α- Naphthol; Naphthol

Chemical formula: C10H8O

Molecular weight: 144.17

CAS login number: 90-15-3

EINECS login number: 201-969-4

Melting point: 96 ℃

Boiling point: 278 to 280 ℃

Appearance: White crystalline powder with unpleasant phenol odor

Physical and chemical properties

PSA: 2023000

LogP: 2.54540

Character: colorless or yellow, with a phenol odor, crystal or powder like, changing to rose color under light.

Relative density (d994): 1.0989

Standard combustion heat (enthalpy) of crystalline phase (kJ · mol-1): -4957.4

Refractive index (n99D): 1.6224

Gas phase standard combustion heat (enthalpy) (kJ · mol-1): -5048.6

Gas phase standard claimed heat (enthalpy) (kJ · mol-1): -29.9

Crystal phase standard claimed heat (enthalpy) (kJ · mol-1): -121.0

Vapor pressure (kpa, 94 º C): 0.13kPa

Solubility: Slightly soluble in water, easily soluble in benzene, ethanol, ether, chloroform, and alkaline solutions.

Flash point (º C): 125

Application area

The demand for 1-naphthol is roughly only about 5% of that of 2-naphthol. However, the demand for 1-naphthol as a raw material for the insecticide carbaryl is high. The intermediates derived from 1-naphthol include N-phenyl-1-naphthylamine, N-ethyl-1-naphthylamine, N-cyclohex-1-naphthylamine, 1-hydroxy-2-naphthoic acid, 1-naphthol-2-sulfonic acid, 1-naphthol-4-sulfonic acid, 1,7-Klebsiella acid, acetamido-7-naphthol, 2,4-dinitronaphthol, etc. In the dye industry, acid yellow 1, acid orange 20, mordant black 3, mordant black 11, solvent red 3, solvent orange 5, oil brown GB, etc. are produced on land. It can be used in the pharmaceutical industry to manufacture preservatives and anti rheumatic drugs. It is also an effective antioxidant for many aldehydes, mineral oils, and vegetable oils, widely used in synthetic fragrances, rubber antioxidants, and as a color coupler for color film.

2. It is a basic raw material for the organic synthesis industry, pharmaceutical industry, and dye industry. It is also used in the production of plastics, rubber antioxidants, color film couplers, etc. In cosmetics, it is a restricted substance with a maximum allowable content of 0.5%, and the allowable range of use is a coupling hair dye used for hair dyeing.

ChemicalCAS.com offers price quotation and technology support of chemical from China. In the quotation from China factory supplier, we will include price terms, payment, lead time, COA, TDS, MSDS etc. We make sure the reliable purchase source and product quality. If you need to buy chemical from China, please feel free to contact sales@chemicalcas.com