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: 2024-12-18 14:15:30
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) |
Exclamation Mark Irritant GHS07 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
2-Nitroso-1-naphthol manufacturer
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