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Basic Violet 4(CAS 2390-59-2)

Name:C.I.Basic Violet 4,C.I.42600

Molecular Structure: triarylmethane class

C.I.Basic Violet 4,C.I.42600,CAS 2390-59-2,492.14,C31H42ClN3

Molecular Formula:C31H42ClN3

Molecular Weight: 492.14

CAS Registry Number:2390-59-2

Manufacturing Methods : (a) Bis(4-(diethylamino)phenyl)methanone and N,N-diethylbenzenamine and trichloride condensation; (b) N,N-diethylbenzenamine in the presence of zinc and Phosgene response; (C) Bis(4-(diethylamino)phenyl)methanol and N,N-diethylbenzenamine condensation, and then will product oxidation.

Properties and Applications: blue purple. Soluble in cold water and hot water are violet blue, easily soluble in ethanol for violet. The strong sulfuric acid in orangeyellow to orange for diluted green. The dye solution to join sodium hydroxide have grey purple precipitation.

Standard( Cotton )

Light Fastness

Persperation Fastness

Ironing Fastness



















An Overview

Basic Violet 4, also known as C.I. Basic Violet 4 and C.I. 42600, belongs to the triarylmethane class of dyes. This compound is characterized by its distinctive molecular structure and specific chemical properties. In this detailed exposition, we will explore the molecular attributes, manufacturing methods, properties, and applications of Basic Violet 4, shedding light on its significance in the dye industry.

Molecular Structure and Composition

Basic Violet 4 is a member of the triarylmethane class of dyes and is identified by its unique molecular structure. The molecular formula for Basic Violet 4 is C31H42ClN3, resulting in a molecular weight of 492.14. The CAS Registry Number for this compound is 2390-59-2.

Manufacturing Methods

Basic Violet 4 is synthesized through several distinct manufacturing methods:

Method (a): It involves the condensation of Bis(4-(diethylamino)phenyl)methanone and N,N-diethylbenzenamine followed by trichloride condensation.
Method (b): This method employs N,N-diethylbenzenamine in the presence of zinc and Phosgene, resulting in the desired compound.
Method (c): In this method, Bis(4-(diethylamino)phenyl)methanol and N,N-diethylbenzenamine are condensed, followed by product oxidation.

Properties of Basic Violet 4

Basic Violet 4 exhibits distinct physical and chemical properties:

Color: Basic Violet 4 is a blue-purple dye.
Solubility: It is soluble in cold and hot water, resulting in a violet-blue solution. Moreover, it is easily soluble in ethanol, forming a violet solution.
Reaction with Sulfuric Acid: When mixed with strong sulfuric acid, it turns orange and dilutes to green.
Reaction with Sodium Hydroxide: The dye solution, when combined with sodium hydroxide, produces a grey-purple precipitation.


Basic Violet 4 finds diverse applications owing to its color and properties. Its application is primarily in the dyeing and printing of various fibers such as wool, silk, and cotton, resulting in black silk. The dye’s characteristics make it particularly suitable for these applications, providing vibrant and fast color.

Standard (Cotton) Testing

Basic Violet 4 undergoes standard testing, especially in the context of cotton:

Light Fastness: It scores 1 on the light fastness scale, indicating relatively low resistance to light-induced fading.
Perspiration Fastness: The dye exhibits moderate perspiration fastness, with a rating of 1-2.
Ironing Fastness: It has a moderate ironing fastness, scoring 3.
Soaping Fastness: In soaping, it scores 3, indicating moderate fastness against fading and staining.

In summary, Basic Violet 4, with its distinctive molecular structure and properties, holds significance in the dye industry. Its applications, especially in dyeing and printing, showcase its importance in creating a variety of vibrant colors on different fibers. Understanding its manufacturing methods and properties is crucial for maximizing its potential in industrial and commercial applications.





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