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ChemicalBook--->CAS DataBase List--->131-91-9

131-91-9

131-91-9 Structure

131-91-9 Structure
IdentificationMore
[Name]

1-Nitroso-2-naphthol
[CAS]

131-91-9
[Synonyms]

1-NITROSO-2-NAPHTHOL
ALPHA-NITROSO-BETA-NAPHTHOL
CI NO 10005
LABOTEST-BB LT00068477
TIMTEC-BB SBB009148
1,2-Napthtoquinone 1-oxime
1-Nitroso-2-naftol
1-nitroso-2-naphthaleno
1-Nitroso-2-naphthalenol
1-nitroso-2-naphtho
2-Naphthol, 1-nitroso-
alpha-Nitroso-beta-naftol
alpha-Nitrosonaphthol
Nitroso-beta-naphthol
Zelen moridlova 4
zelenmoridlova4
α-Nitroso-β-nophthol
1-nitroso-2-naphthol (alpha-beta)
1-nitrosonaphthalen-2-ol
2-Hydroxy-1-nitrosonaphthalene
[EINECS(EC#)]

205-043-0
[Molecular Formula]

C10H7NO2
[MDL Number]

MFCD00003884
[Molecular Weight]

173.17
[MOL File]

131-91-9.mol
Chemical PropertiesBack Directory
[Appearance]

brown powder
[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
[Colour Index ]

10005
[form ]

crystalline
[pka]

7.87±0.10(Predicted)
[color ]

tan to brown
[Water Solubility ]

insoluble
[Merck ]

14,6641
[BRN ]

776947
[Uses]

Organic synthesis, prevention of gum formation in gasoline, dye intermediate, analytical reagent.
[CAS DataBase Reference]

131-91-9(CAS DataBase Reference)
[NIST Chemistry Reference]

2-Naphthalenol, 1-nitroso-(131-91-9)
[EPA Substance Registry System]

131-91-9(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xn
[Risk Statements ]

R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
R33:Danger of cumulative effects.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
[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
Raw materials And Preparation ProductsBack Directory
[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
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

1-Nitroso-2-naphthol(131-91-9).msds
Hazard InformationBack Directory
[Chemical Properties]

brown powder
[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.]
Spectrum DetailBack Directory
[Spectrum Detail]

1-Nitroso-2-naphthol(131-91-9)MS
1-Nitroso-2-naphthol(131-91-9)1HNMR
1-Nitroso-2-naphthol(131-91-9)IR1
1-Nitroso-2-naphthol(131-91-9)IR2
1-Nitroso-2-naphthol(131-91-9)IR3
1-Nitroso-2-naphthol(131-91-9)Raman
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

1-Nitroso-2-naphthol, 98%(131-91-9)
[Alfa Aesar]

1-Nitroso-2-naphthol, 99%(131-91-9)
[Sigma Aldrich]

131-91-9(sigmaaldrich)
[TCI AMERICA]

1-Nitroso-2-naphthol,>97.0%(T)(131-91-9)
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13684-63-4 135-19-3 7782-78-7 602-09-5 90-15-3 132-53-6 524-42-5 3682-32-4 525-05-3 131-91-9

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