569-64-2

Basic information

• Product Name: Pigment Green 18
• Synonyms: TETRAMETHYLDI-P-AMINOTRIPHENYLCARBINOL CHLORIDE;S NO 754;VICTORIA GREEN G;HIDACO MALACHITE GREEN BASE;FAST GREEN O;FAST GREEN;CI 10000;CI NO 42000
• CAS NO: 569-64-2
• Molecular Formula: C₂₃H₂₅N₂*Cl
• Molecular Weight: 364.91
• EINECS: 219-441-7
• Product Categories: Dyes and Pigments;UVCBs-inorganic;Organics;Amines;Aromatics;Biological stain;Triphenylmethane
• Mol File: 569-64-2.mol

Chemical Properties

• Melting Point: 158-160°C
• Boiling Point: 520.91°C (rough estimate)
• Appearance: Brown/Solid
• Density: 1.0448 (rough estimate)
• Refractive Index: 1.5940 (estimate)
• Storage Temp.: Refrigerator
• Solubility: Solubility Very soluble in water; soluble in ethanol, methanol,
• PKA: 6.90(at 25℃)
• Water Solubility: 1486 mg l-1 (e)
• Stability: Stable. Substances to be avoided include strong oxidizing agents.
• BRN: 3580148
• CAS DataBase Reference: Pigment Green 18(CAS DataBase Reference)
• NIST Chemistry Reference: Pigment Green 18(569-64-2)
• EPA Substance Registry System: Pigment Green 18(569-64-2)

Safety Data

• Hazard Codes: Xn,N
• Statements: 22-41-50/53-63
• Safety Statements: 26-36/37/39-46-60-61-39-36/37
• RIDADR: UN 2811 6.1/PG 3
• WGK Germany: 3
• RTECS: BQ1190000
• HazardClass: 9
• PackingGroup: III
• Hazardous Substances Data: 569-64-2(Hazardous Substances Data)

Usage

Uses

Used in Textile Industry:
Pigment Green 18 is used as a dye for acrylic, silk, and wool, providing a bright blue light green color to these materials. Its solubility in cold and hot water, as well as in ethanol, makes it an ideal choice for coloring these fibers.
Used in Leather and Other Materials:
Pigment Green 18 is also utilized in the dyeing of leather, hemp, bamboo, wood, and paper, offering a green coloration to these materials. Its ability to dissolve in various solvents allows for easy application and even distribution of color.
Used in Biological Staining:
In the field of biology, Pigment Green 18 is employed as a biological stain, particularly for histology. Its green coloration aids in the visualization and differentiation of cellular structures during microscopic examination.
Used in Aquaculture:
Due to its anti-fungal properties, Pigment Green 18 is used in aquaculture to prevent and treat fungal infections in fish and other aquatic organisms.
Standard:
Pigment Green 18 adheres to various standards, including ISO and AATCC, which evaluate its light fastness, perspiration fastness, ironing fastness, and soaping. These standards ensure the quality and performance of the pigment in different applications.
Chemical Properties:
Pigment Green 18 is a green crystalline compound that is soluble in water and various alcohols, such as ethyl, methyl, and amyl alcohol. This solubility contributes to its versatility in different applications and industries.

Preparation

commonly known as Malachite Green. (a) in the presence of hydrochloric acid or sulfuric acid, Benzaldehyde ?(1 Moore) and N,N-dimethylaniline(2 Moore) condensation, and then used lamps and acid oxidation its products; (b) N,N-dimethylaniline and 1-(Trichloromethyl)benzene?heating.

Reactivity Profile

Pigment Green 18 neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Hazard

Toxic by ingestion.

Standard

Light Fastness

Fading

Stain

ISO

3

AATCC

2-3

InChI:InChI:1S/C23H25N2.ClH/c1-24(2)21-14-10-19(11-15-21)23(18-8-6-5-7-9-18)20-12-16-22(17-13-20)25(3)4;/h5-17H,1-4H3;1H/q+1;/p-1

Upstream product

• 64-17-5 ethanol 
• 129-73-7 bis(4-dimethylaminophenyl)phenylmethane 
• 118-75-2 chloranil 
• 71-43-2 benzene 
• 32315-05-2 bis-(p-N,N-dimethylaminophenyl)phenylmethyl methyl ether 
• 64-19-7 acetic acid 
• 60-29-7 diethyl ether 
• 13381-65-2 α-Bromobenzyl benzoate 
• 121-69-7 N,N-dimethyl-aniline 
• 6370-31-6 4-(α,α-dichloro-benzyl)-N,N-dimethyl-aniline 
• 510-13-4 1,1-bis(4-dimethylaminophenyl)-1-phenyl-methanol 
• 7719-12-2 phosphorus trichloride 
• 98-88-4 benzoyl chloride 
• 98-07-7 Benzotrichlorid 

Downstream Products

• 32315-05-2 bis-(p-N,N-dimethylaminophenyl)phenylmethyl methyl ether 
• 530-44-9 4-(Dimethylamino)benzophenone 
• 2491-74-9 N,N-dimethyl-4-(4-nitrophenylazo)aniline 
• 50-00-0 formaldehyd 
• 129-73-7 bis(4-dimethylaminophenyl)phenylmethane 
• 510-13-4 1,1-bis(4-dimethylaminophenyl)-1-phenyl-methanol 
• 33560-61-1 bis-(p-N,N-dimethylaminophenyl)phenylmethyl ethyl ether 
• 859777-44-9 1,1,2,2-tetrakis-(4-dimethylamino-phenyl)-1,2-diphenyl-ethane 
• 115209-31-9 N-(4,4'-bis-dimethylamino-trityl)-aniline 
• 65-85-0 benzoic acid 
• 26178-74-5 (4-(methylamino)phenyl)(phenyl)methanone 
• 5809-25-6 4-aminophenyl-[4'-(dimethylamino)phenyl] methanone 
• 93-58-3 benzoic acid methyl ester 
• 123-31-9 hydroquinone 

Relevant articles and documents

Synthesis method of malachite green salt

The invention relates to a synthesis method of malachite green salt. The method completely abandons traditional synthesis methods in the prior art, and tries to adopt a brand new synthesis route. A Grignard reagent is prepared, and a nucleophilic addition is carried out to synthesize leucomalachite green, and it is accidentally found that the method has the advantages of very few byproducts, and very high yield of the product; the malachite green salt prepared from the synthesized leucomalachite contains few impurities, and can be used as a high-quality candidate for a malachite green standardsubstance; and compared with the traditional synthesis methods, the method of the invention has the advantages of mild reaction conditions, and simplicity in operation.

Two Amphoteric Silver Carbene Clusters

Two highly labile silver carbene cluster complexes are described, which are unique in that they mark the transition point at which the carbene center transmutes from a fairly common NHC-like nucleophilic behavior to an electrophilic character befitting reactive silver carbene intermediates of relevance in various catalytic transformations. This amphoteric character is the distinguishing attribute of a μ-bridged donor/donor carbene entity that connects two silver atoms of triangular or tetrahedral metallic core units.

Carbenium ion-carbinol equilibration for basic triarylmethane dyes: Relative reactivities of dyes in aq. solutions

Equilibria and kinetics of carbenium ion-to-carbinol base reactions for a set of selected basic triarylmethane dyes in aq. buffer solutions of low ionic strength have been measured spectrophotometrically.Relative reactivities of the dyes towards nucleophilic attack by hydroxide ion, on the basis of both equilibrium constant and forward rate constant of the reaction, have been found to follow the same order: malachite green (MG)> brillant green (BG)>> Victoria pure blue BO(VB)> methyl violet (MV) = crystal violet (CV)> ethyl vioet (EV).A fairly good correlation between elec trophilicities of the dyes and ?R+ parameters of their 4-alkylamino substituents has been obtained

MECHANISM OF OXIDATION OF LEUCO BASES OF TRIARYLMETHANE DYES BY OXYGEN

The kinetics of the oxidation of the leuco bases of triarylmethane dyes by oxygen were investigated.It was established that the oxidating agent was the peroxy radicals of the solvent.The leuco base is oxidized in the protonated form.A mechanism which involves the formation of a complex between the protonated leuco base and the peroxy radical is proposed.The decomposition of the complex in the controlling stage of the process leads to the formation of the dye.