| 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 |
| 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) |
| 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. |
| 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 |
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