1-Nitroso-2-naphthol

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;Intermediates of Dyes and Pigments;Nitroso Compounds;Organic Building Blocks
Mol File:	131-91-9.mol

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)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
form	crystalline
pka	7.87±0.10(Predicted)
Colour Index	10005
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)

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
F	8
TSCA	Yes
HazardClass	9
PackingGroup	III
HS Code	29089000
Toxicity	LDLo orl-rat: 500 mg/kg NCNSA6 5,35,53

MSDS Information

Provider	Language
1-Nitroso-2-naphthol	English
ACROS	English
SigmaAldrich	English
ALFA	English

1-Nitroso-2-naphthol Usage And Synthesis

Chemical Properties	brown powder
Uses	Organic synthesis, prevention of gum formation in gasoline, dye intermediate, analytical reagent.
Uses	1-Nitroso-2-naphthol as a complexing agent for the on-line preconcentration of cobalt with FI-FAAS. 1-Nitroso-2-naphthol is the chelating ion-exchanger in the synthesis of alumina adsorbents that are of acidic, basic and neutral nature. It is used for the removal and preconcentration of Pb(II), Cu(II), Cr(III) from waste, as well as drinking water. It is also used in the preconcentration of cobalt using C(18) microcolumn with flow injection that is coupled to a flame atomic absorption spectrometry (FI-FAAS) system. 1-Nitroso-2-naphthol is used in the preparation of 1-nitroso-2-naphthol-sodium nitrite reagent.
Definition	ChEBI: 1-Nitroso-2-naphthol is a member of naphthols.
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	1-Naphthol-->Congo red paper-->1,1'-METHYLENEDI-2-NAPHTHOL-->Water-->NITROUS ACID-->2-Naphthol-->Nitric acid
Preparation Products	2-Naphthalenamine, N-cyclopropyl-1-nitroso--->1H-2-Benzopyran-1-one-->Nickel-->1-Amino-2-naphthol-->Vat Red 33-->9H-Benzo[a]phenoxazin-9-one

1-Naphthol 1,1'-Bi-2-naphthol 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT 1-Nitroso-2-naphthol 7-Hydroxyaristolochic acid A 1-nitropyrene-2-ol Nitrosylsulfuric acid 2- 1-NITROSO-2-NAPHTHOL 2-METHOXY-1-NITRONAPHTHALENE BETA-NITROSO-ALPHA-NAPHTHOL,2-NITROSO-1-NAPHTHOL,2-nitroso-1-naphthol (beta-alpha),2-NITROSO-1-NAPHTHOL R. G. 2,4-DINITROSO-1,3-NAPHTHALENEDIOL NITROSOGUANIDINE Acid Green 1 1-NITRO-2-NAPHTHOL Phenmedipham SODIUM NITROPRUSSIDE DISODIUM 1-NITROSO-2-NAPHTHOL-3,6-DISULFONATE,1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT 2-Naphthol

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