569-64-2 Usage
Description
Pigment Green 18, also known as Malachite Green, is an organic chloride salt that is the monochloride salt of the malachite green cation. It is characterized by its green crystalline structure and metallic luster, with water solutions exhibiting a blue-green color. Pigment Green 18 is known for its fungicidal and limited antiseptic properties, making it a versatile compound with various applications across different industries.
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
Check Digit Verification of cas no
The CAS Registry Mumber 569-64-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,6 and 9 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 569-64:
(5*5)+(4*6)+(3*9)+(2*6)+(1*4)=92
92 % 10 = 2
So 569-64-2 is a valid CAS Registry Number.
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
569-64-2Relevant articles and documents
Synthesis method of malachite green salt
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, (2019/12/25)
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.
Carbenium ion-carbinol equilibration for basic triarylmethane dyes: Relative reactivities of dyes in aq. solutions
Gupta, Susanta K. Sen,Arvind, Udai
, p. 998 - 1000 (2007/10/02)
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
