1-Nitroso-2-naphthol, CAS No. 131-91-9

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131-91-9

Catalog No. EBD54802

CAS 131-91-9

Name 1-Nitroso-2-naphthol

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Basic Information

Synonyms: 1-nitroso-2-naphthol(alpha-beta) 1-nitrosonaphthalen-2-ol 1-nitrosonaphthalen-2-olate 1-Nitroso-2-naftol 1,2-Napthtoquinone1-oxime TIMTEC-BBSBB009148 Alpha-Nitroso-Beta-Naphthol LABOTEST-BBLT00068477 cino10005 1-nitroso-2-naphthaleno C.I.10000 a-nitroso-b-naphthol 1-nitroso-2-naphthalenol 1-Nitroso-2-naphthol

Molecular Formula: C10H7NO2

Molecular Weight: 173.17

MDL Number: MFCD00003884

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > Dye Precursors Synthetic Chemistry > Organic Building Blocks > Phenols and Ethers

Product Description:

1-Nitroso-2-naphthol is an organic compound characterized by its orange to brown crystalline powder form. It features a naphthalene ring structure substituted with a nitroso group (-NO) at the 1-position and a hydroxyl group (-OH) at the 2-position. This compound is sparingly soluble in water but soluble in organic solvents like ethanol and benzene. Its primary industrial application is as a key intermediate in the synthesis of various azo dyes and pigments. The nitroso and hydroxyl groups make it a versatile precursor for coupling reactions, leading to the production of colorants used in textiles, inks, and plastics. Additionally, it serves as a specific and sensitive analytical reagent for the gravimetric determination and spectrophotometric detection of cobalt ions, forming an insoluble reddish-brown complex. 1-Nitroso-2-naphthol is also utilized in organic synthesis as a building block for more complex molecules. It is important to handle it with care as it is considered harmful if swallowed or inhaled and may cause skin and eye irritation.

Physical Properties

Melting Point: 106-108 °C (dec.)(lit.)

Boiling Point: 357.6 °C at 760 mmHg

Flash Point: 170.1 °C

Density: 1.27 g/cm3

Solubility: insoluble

Analytical Data

Appearance: brown powder