ChemicalBook Product Catalog Analytical Chemistry Standard Food and beverage standards 1-(4-NITROPHENYLAZO)-2-NAPHTHOL

1-(4-NITROPHENYLAZO)-2-NAPHTHOL

1-(4-NITROPHENYLAZO)-2-NAPHTHOL Basic information
Product Name:1-(4-NITROPHENYLAZO)-2-NAPHTHOL
Synonyms:1-((4-nitrophenyl)azo)-2-naphthaleno;1-((4-nitrophenyl)azo)-2-naphtho;1-[(4-nitrophenyl)azo]-2-naphthaleno;LABOTEST-BB LT00454132;1-(P-NITROPHENYLAZO)-2-NAPHTHOL;1-(P-NITROPHENYLAZO)-2-NAPHTHOL PARA RED;1-(4-NITROPHENYLAZO)-2-NAPHTHOL;1-[(4-nitrofenyl)diazenyl]-2-naftol
CAS:6410-10-2
MF:C16H11N3O3
MW:293.28
EINECS:229-093-8
Product Categories:
Mol File:6410-10-2.mol
1-(4-NITROPHENYLAZO)-2-NAPHTHOL Structure
1-(4-NITROPHENYLAZO)-2-NAPHTHOL Chemical Properties
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
pka13.45±0.50(Predicted)
color Red
BRN 680469
Stability:Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference6410-10-2(CAS DataBase Reference)
EPA Substance Registry SystemC.I. Pigment Red 1 (6410-10-2)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 24/25-36-26-36/37/39
WGK Germany 3
RTECS QL4510000
TSCA Yes
HS Code 29270000
MSDS Information
ProviderLanguage
ACROS English
ALFA English
1-(4-NITROPHENYLAZO)-2-NAPHTHOL Usage And Synthesis
Chemical Propertiessolid
UsesPara 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.
Purification MethodsCrystallise this dye from AcOH or xylene and dry it in vacuo. It has max at 488nm. [Beilstein 16 II 70.]
1-(4-NITROPHENYLAZO)-2-NAPHTHOL Preparation Products And Raw materials
Methyl Orange Quinoline Yellow 1-(2-Hydroxy-5-methyl-3-nitrophenylazo)-2-naphthol 1-(4-NITROPHENYLAZO)-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT Pigment Red 12 4-(4-NITROPHENYLAZO)-1-NAPHTHOL,4-(P-NITROPHENYLAZO)-1-NAPHTHOL,p-Nitrophenylazo-alpha-naphthol,4-(4-NITROPHENYLAZO)-1-NAPHTHOL, FOR THE DETERMINATION OF MG 8-Acetylamino-1-(2-hydroxy-4-nitrophenylazo)-2-naphthol 1-(2-Chloro-4-nitrophenylazo)-2-naphthol Pigment Orange 5 1-(6-Methyl-3-nitrophenylazo)-2-naphthol 1-(3-Chloro-2-hydroxy-5-nitrophenylazo)-2-naphthol 8-AMINO-2-(3-CHLORO-2-HYDROXY-5-NITROPHENYLAZO)-1-NAPHTHOL-3,6-DISULFONIC ACID 1-(4-METHYL-2-NITROPHENYLAZO)-2-NAPHTHOL 1-(4-Nitrophenylazo)-2-naphthol-d4 1-(4-NITROPHENYLAZO)-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT 1-(4-NITROPHENYLAZO)-2-NAPHTHOL hydrogen bis[1-[(2-hydroxy-4-nitrophenyl)azo]naphthalen-2-olato(2-)]cobaltate(1-) 2-Naphthol
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