1-(4-NITROPHENYLAZO)-2-NAPHTHOL
Synonym(s):1-(p-Nitrophenylazo)-2-naphthol;1-(4-Nitrophenylazo)-2-naphthol;Para Red
- CAS NO.：6410-10-2
- Empirical Formula: C16H11N3O3
- Molecular Weight: 293.28
- MDL number: MFCD00003908
- EINECS: 229-093-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:35
What is 1-(4-NITROPHENYLAZO)-2-NAPHTHOL?
Chemical properties
solid
The Uses of 1-(4-NITROPHENYLAZO)-2-NAPHTHOL
Para Red is used as a fat soluble chemical dye and food additive. It is a banned colorant and a number of analytical techniques have been developed to detect it in food.
What are the applications of Application
Para Red is an phenyl naphthyl azo dye compound
Purification Methods
Crystallise this dye from AcOH or xylene and dry it in vacuo. It has max at 488nm. [Beilstein 16 II 70.]
Properties of 1-(4-NITROPHENYLAZO)-2-NAPHTHOL
| Melting point: | 248-252 °C |
| Boiling point: | 435.13°C (rough estimate) |
| Density | 1.2211 (rough estimate) |
| refractive index | 1.6500 (estimate) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | DMSO (Slightly, Heated) |
| Colour Index | 12070 |
| form | neat |
| pka | 13.45±0.50(Predicted) |
| color | Red |
| BRN | 680469 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 6410-10-2(CAS DataBase Reference) |
| EPA Substance Registry System | C.I. Pigment Red 1 (6410-10-2) |
Safety information for 1-(4-NITROPHENYLAZO)-2-NAPHTHOL
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 1-(4-NITROPHENYLAZO)-2-NAPHTHOL
New Products
5-Chlorothiophene-2-carboxylic acid 2-(2-Ethoxyphenoxy)ethyl bromide 1,3-Dibromo-2,2-dimethoxypropane 8-Bromo-3-methyl xanthine Maleic hydrazide 6-Methyl-2-(p-tolyl)imidazo[1,2-a]pyridine 3,4-Dihydroxyacetophenone 3,4-Dimethoxyacetophenone 4-Nitroacetophenone DL-Glutamic acid 3-Nitroacetophenone 4'-Chloro-3'-nitroacetophenone 2,3-Dihydro-5,6-dimethoxy-2-(4-piperidinylmethyl)-1H-inden-1-one hydrochloride 3-(4-Bromo-3-methyl-2-oxo-2,3-dihydro-1h-benzo[d]imidazol-1-yl)piperidine-2,6-dione 1-Boc-4-cyanopiperidine 2-Fluoro-6-iodobenzoic acid 3-Pyridineacrylic acid 3-Hydroxy-2-methylbenzoic acid 1,3-Dibromo-5-fluorobenzene 2-((2,6-Difluorobenzyl)(ethoxycarbonyl)amino)-4-((dimethylamino)methyl)-5-(4-nitrophenyl)thiophene-3-carboxylic acid [N(E)]-N-Ethylidene-2-methyl-2-propanesulfinamide 4-Isopropyl Thiophenol 6-(chloromethyl)pteridine-2,4-diamine monohydrochloride 2-Chlorophenyl diphenyl chloromethaneRelated products of tetrahydrofuran
![hydrogen bis[1-[(2-hydroxy-4-nitrophenyl)azo]naphthalen-2-olato(2-)]cobaltate(1-)](https://img.chemicalbook.in/CAS/GIF/32517-38-7.gif)
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