Para Red

Base Information

• Chemical Name: Para Red
• CAS No.: 6410-10-2
• Deprecated CAS: 104407-04-7
• Molecular Formula: C16H11 N3 O3
• Molecular Weight: 293.282
• Hs Code.: 2927000090
• European Community (EC) Number: 229-093-8
• NSC Number: 210792,70812
• UNII: D54Q24K2EI
• DSSTox Substance ID: DTXSID1052325
• Nikkaji Number: J33.578I,J3.321.018C,J993.382D
• Wikipedia: Para_red
• Wikidata: Q906600
• ChEMBL ID: CHEMBL1967257
• Mol file: 6410-10-2.mol

Synonyms:para red

Chemical Property of Para Red

Chemical Property:

• Appearance/Colour: solid
• Vapor Pressure: 9.94E-10mmHg at 25°C
• Melting Point: 248-252 °C
• Refractive Index: 1.6500 (estimate)
• Boiling Point: 489.5°C at 760 mmHg
• PKA: 13.45±0.50(Predicted)
• Flash Point: 249.8°C
• PSA: 90.77000
• Density: 1.35g/cm³
• LogP: 5.39220
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility.: DMSO (Slightly, Heated)
• XLogP3: 4
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 5
• Rotatable Bond Count: 2
• Exact Mass: 293.08004122
• Heavy Atom Count: 22
• Complexity: 415

Purity/Quality:

98%,99%, ^*data from raw suppliers

Para Red ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 24/25-36-26-36/37/39

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Dyes -> Azo Dyes
• Canonical SMILES: C1=CC=C2C(=C1)C=CC(=C2N=NC3=CC=C(C=C3)[N+](=O)[O-])O
• Uses: 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.

Technology Process of Para Red

There total 58 articles about Para Red which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 95.0%

sodium 2-naphtholate (875-83-2) + 4-nitro-aniline (100-01-6,104810-17-5) → para red (6410-10-2)

Guidance literature:

With sodium nitrite; In water; at 0 - 5 ℃; for 0.25h;

DOI:10.1016/j.dyepig.2014.09.023

Reference yield: 94.0%

C7H6N8O2 (93680-31-0) + β-naphthol (135-19-3) → para red (6410-10-2)

Guidance literature:

With trifluoroacetic acid; In benzene; at 65 ℃; for 3h;

Reference yield: 94.0%

β-naphthol (135-19-3) + p-nitrobenzenediazonium o-benzenedisulfonimide → para red (6410-10-2)

Guidance literature:

With sodium hydroxide; In water; for 0.333333h;

DOI:10.1055/s-1998-2132

upstream raw materials:

p-nitrobenzenediazonium

1-chloro-2-naphthol

1-bromo-2-naphthol

1-iodo-2-hydroxynaphthalene

Downstream raw materials:

{Cu(C₆H₄(NO₂)NNC₁₀H₆(O))2}

methylsulfonyl para red

bis(2,2'-bipyridine)(1-((p-nitrophenyl)azo)-2-naphtholato)ruthenium(II) perchlorate

1-(4-aminophenylazo)naphthalen-2-ol

Refernces

• 1、 Cheng, Xin-Wang,Duan, Pan,Liu, Ting-Ting,Yan, Jiao-Zhao,Zeng, Yao-Fu. "One-pot synthesis of azo compounds in the absence of acidic or alkaline additives". . p. 486 - 490. Retrieved 2020/10/22.
• 2、 Feng, Guangyuan,Zhu, Meiling,Liu, Lei,Li, Chunbao. "A quantitative one-pot synthesis method for industrial azo pigments with recyclable wastewater". supporting information. p. 1769 - 1776. Retrieved 2019/04/08.