4185-69-7

Basic information

• Product Name: 1-(2,4-dinitrophenyl)pyridinium chloride
• Synonyms: 1-(2,4-dinitrophenyl)pyridinium chloride;1-(2,4-dinitrophenyl)-pyridiniu chloride;N-(2,4-Dinitrophenyl)pyridinium chloride;Pyridinium, 1-(2,4-dinitrophenyl)-, chloride;Pyridinium,1-(2,4-dinitrophenyl)-,chloride;Zincke Salt
• CAS NO: 4185-69-7
• Molecular Formula: C₁₁H₈N₃O₄*Cl
• Molecular Weight: 281.65192
• EINECS: 224-059-9
• Mol File: 4185-69-7.mol
• Article Data: 38

Chemical Properties

• Melting Point: 191°C(dec.)(lit.)
• Appearance: /
• CAS DataBase Reference: 1-(2,4-dinitrophenyl)pyridinium chloride(CAS DataBase Reference)
• NIST Chemistry Reference: 1-(2,4-dinitrophenyl)pyridinium chloride(4185-69-7)
• EPA Substance Registry System: 1-(2,4-dinitrophenyl)pyridinium chloride(4185-69-7)

Safety Data

• Hazardous Substances Data: 4185-69-7(Hazardous Substances Data)

Usage

General Description

1-(2,4-dinitrophenyl)pyridinium chloride is a chemical compound commonly used in organic chemistry for the detection of primary and secondary amines. It is often utilized in a qualitative test known as the Hinsberg test, which helps to distinguish between different types of amines. The compound is a yellow crystalline powder and is highly soluble in water. Its chemical structure consists of a pyridine ring with a 2,4-dinitrophenyl group attached to it, along with a chloride ion. It is known for its ability to form stable and colored derivatives with various amines, making it a valuable reagent in organic synthesis and analysis. Additionally, it is used in pharmaceutical research and as a spectral probe in fluorescence studies.

InChI:InChI=1/C11H8N3O4/c15-13(16)9-4-5-10(11(8-9)14(17)18)12-6-2-1-3-7-12/h1-8H/q+1

Upstream product

• 110-86-1 pyridine 
• 97-00-7 1-chloro-2,4-dinitro-benzene 
• 553-26-4 4,4'-bipyridine 
• 7647-01-0 hydrogenchloride 
• 53405-99-5 5-(2,4-dinitro-anilino)-penta-2,4-dienal 

Downstream Products

• 53782-72-2 2,4-dinitro-N-(5-piperidino-penta-2,4-dienyliden)-aniline; hydrochloride 
• 77806-33-8 1-(4-hydroxyphenyl)pyridin-1-ium chloride 
• 17434-93-4 1-(4-chlorophenyl)pyridin-1-ium chloride 
• 29522-92-7 5-p-anisidino-penta-2,4-dienal-(4-methoxy-phenylimine); hydrochloride 
• 93836-84-1 5-(4-carboxy-anilino)-penta-2,4-dienal-(4-carboxy-phenylimine); hydrochloride 
• 97-02-9 2,4-Dinitroanilin 
• 2363-29-3 2,4-dinitro-2'-methoxydiphenyl ether 
• 147308-64-3 5-(2-nitro-anilino)-penta-2,4-dienal-(2-nitro-phenylimine); hydrochloride 
• 31860-46-5 5-(2,4-Dinitro-anilino)-penta-2,4-dienal-hydrazon 
• 40808-02-4 5-(2,4-Dinitro-anilino)-penta-2,4-dienal-oxim 
• 120343-62-6 1-((S)-2-Methoxymethyl-pyrrolidin-1-yl)-pyridinium; chloride 
• 73171-31-0 1,7-Bis<4-(4,7,10,13-tetraoxa-1-azacyclopentadecyl)phenyl>-1,7-diaza-1,3,5-heptatrienyliumchlorid 
• 13958-90-2 N-phenylpyridinium chloride 
• 110-86-1 pyridine 

Relevant articles and documents

[12]Annulene gemini surfactants: Structure and self-assembly

(Chemical Equation Presented) The long and short of it: Gemini surfactants with a non-Hueckel diaza[12]annulene core have been synthesized (see picture). DFT computations give a minimum-energy conformation with alternate shorter and longer bonds, and with the two N substituents pointing away from each other. Studies on the aggregation of the molecules in water show they encounter packing difficulties, with no evidence for ring/ring interactions at the micelle surfaces.

Aggregation?induced emissions in columnar wedge?shaped pyridinium?based ionic liquid crystals

Two series of ILCs derived from wedge?shaped N-phenylpyridiniums 1–2 were prepared and their mesomorphic properties were investigated. The X?ray crystal structure analyses of two single crystals 2-PF6 (n = 12) and 2-NTf2 (n = 12) revealed that bilayer structures induced by H?bonds in the solid state were observed. A complementary dimeric structure induced by H?bonds in such type of wedge?shaped cation (or anion) moiety was attributed to the formation of columnar phases. The type of counter anions has a significant influence on the formation of the mesophase; five counter anions (i.e. X = PF6￣, BF4￣, OTf￣, SCN￣, RSO3￣) induced columnar mesophase. In contrast, anion X = Tf2N￣ as a bulky moiety and less H?bond active sites formed crystal phase. The powder XRD data appeared that the diameter of the hard columnar part increased with the effective ionic radius for different counter ion. A linear correlation plot (R2 = 0.9203) was obtained. All ethanol solutions of compounds 1–2 were detected without any observable signals on photoluminescence. But compounds 2-X will aggregate in the aqueous mixture with high water fractions (?w) needed to turn on their light emission process. Weak PL signals are recorded at ?w w > 50% till it reached to the maximum intensity at ?w ~70%.

PROCESS FOR THE PREPARATION OF SODIUM 4-(2-((1E,3E,5E,7Z)-7-(1,1-DIMETHYL-3-(4-SULFONATOBUTYL)-1H-BENZO[e]INDOL-2(3H)-YLIDENE) HEPTA-1,3,5-TRIENYL)-1,1-DIMETHYL-1H-BENZO[e]INDOLIUM-3-YL) BUTANE-1-SULFONATE (INDOCYANINE GREEN)

A process for the preparation of substantially pure Indocyanine green of formula with purity greater than 99.0% is provided. More particularly, the embodiments relate to the process for the preparation of Indocyanine green of formula and its intermediates thereof. It further provides crystalline form I of Indocyanine green of formula and process thereof.