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HomeProduct name list2-Nitroso-1-naphthol

2-Nitroso-1-naphthol

  • CAS NO.:132-53-6
  • Empirical Formula: C10H7NO2
  • Molecular Weight: 173.17
  • MDL number: MFCD00003932
  • EINECS: 205-064-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-29 18:21:28
2-Nitroso-1-naphthol Structural

What is 2-Nitroso-1-naphthol?

Chemical properties

yellow-greenish to yellow-brownish powder

What are the applications of Application

2-Nitroso-1-naphthol is a selective complexing agent used in cobalt ion extraction

General Description

2-nitroso-1-naphthol helps in the extraction of cobalt ion as it is used as a selective complexing agent. It is used in the separation and preconcentration of Th(IV), Ti(IV), Fe(III), Pb(II) and Cr(III) by solid phase extraction.

Safety Profile

Moderately toxic by ingestion. Many nitroso compounds are carcinogens. Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits toxic fumes of NOx. See also NITROSO COMPOUNDS.

Purification Methods

Purify the naphthol by recrystallisation from pet ether (b 60-80o) or by dissolving it in hot EtOH, followed by successive addition of small volumes of water (m 158o dec). It also crystallises from *C6H6 or H2O. Crystallisation from *C6H6/pet ether gives m (106-109 o, also 109.5o). It has max at 274.5 and 382nm (CHCl3). It complexes with metals. [Beilstein 7 H 712, 7 I 385, 7 II 647, 7 III 3688, 7 IV 2419.]

Properties of 2-Nitroso-1-naphthol

Melting point: 150-155 °C (dec.)(lit.)
Boiling point: 303.81°C (rough estimate)
Density  1.2427 (rough estimate)
refractive index  1.5200 (estimate)
pka 7.47±0.10(Predicted)
form  Solid
color  Yellow needles from H2O or C6H6
Odor Odorless
Water Solubility  SLIGHTLY SOLUBLE
BRN  1867919
CAS DataBase Reference 132-53-6(CAS DataBase Reference)
NIST Chemistry Reference 1-Naphthalenol, 2-nitroso-(132-53-6)
EPA Substance Registry System 1-Naphthalenol, 2-nitroso- (132-53-6)

Safety information for 2-Nitroso-1-naphthol

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
H370:Specific target organ toxicity, single exposure
Precautionary Statement Codes P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P270:Do not eat, drink or smoke when using this product.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P307+P311:IF exposed: call a POISON CENTER or doctor/physician.
P405:Store locked up.
P501:Dispose of contents/container to..…

Computed Descriptors for 2-Nitroso-1-naphthol

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