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1-Nitroso-2-naphthol

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1-Nitroso-2-naphthol Basic information

Product Name:
1-Nitroso-2-naphthol
Synonyms:
  • LABOTEST-BB LT00068477
  • CI NO 10005
  • zelenmoridlova4
  • 1-Nitroso-2-phthol
  • α-Nitroso-β-nophthol
  • 1-nitroso-2-naphthol (alpha-beta)
  • 1-nitrosonaphthalen-2-ol
  • 2-Hydroxy-1-nitrosonaphthalene
CAS:
131-91-9
MF:
C10H7NO2
MW:
173.17
EINECS:
205-043-0
Product Categories:
  • Phenoles and thiophenoles
  • Nitrogen Compounds
  • Nitroso Compounds
  • Organic Building Blocks
  • Intermediates of Dyes and Pigments
Mol File:
131-91-9.mol
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1-Nitroso-2-naphthol Chemical Properties

Melting point:
106-108 °C (dec.)(lit.)
Boiling point:
303.81°C (rough estimate)
Density 
1.2427 (rough estimate)
refractive index 
1.5200 (estimate)
Colour Index 
10005
pka
7.87±0.10(Predicted)
form 
crystalline
color 
tan to brown
Water Solubility 
insoluble
Merck 
14,6641
BRN 
776947
CAS DataBase Reference
131-91-9(CAS DataBase Reference)
NIST Chemistry Reference
2-Naphthalenol, 1-nitroso-(131-91-9)
EPA Substance Registry System
2-Naphthalenol, 1-nitroso- (131-91-9)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22-36/37/38-33-20/21/22
Safety Statements 
26-36-45
RIDADR 
UN3077
WGK Germany 
3
RTECS 
QL4725000
8
TSCA 
Yes
HazardClass 
9
PackingGroup 
III
HS Code 
29089000
Toxicity
LDLo orl-rat: 500 mg/kg NCNSA6 5,35,53

MSDS

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1-Nitroso-2-naphthol Usage And Synthesis

Chemical Properties

brown powder

Uses

Organic synthesis, prevention of gum formation in gasoline, dye intermediate, analytical reagent.

Safety Profile

Moderately toxic by ingestion.Many nitroso compounds are carcinogens. Ignites whenheated to 124°C. Mutation data reported. When heated todecomposition it emits toxic fumes of NOx.

Purification Methods

Crystallise the naphthol from pet ether (b 60-80o, 7.5mL/g). [Beilstein 7 H 712, 7 IV 2419.]

1-Nitroso-2-naphthol Preparation Products And Raw materials

Raw materials

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