2429-71-2 Usage
Description
BENZOAZURINE is a bluish-black powder with solid chemical properties. It is soluble in water, displaying a color range from purple-red to blue, and also soluble in ethanol. However, it is insoluble in other organic solvents. When treated with strong sulfuric acid, the color changes to blue, which then turns red upon dilution. The dye solution turns purple when mixed with strong hydrochloric acid and results in precipitation. Adding a thick sodium hydroxide solution to the dye solution produces a red light purple color.
Uses
Used in Dye Industry:
BENZOAZURINE is used as a dye for its ability to produce a range of colors, from purple-red to blue, depending on the solvent and treatment conditions. Its color-changing properties make it a versatile option for various applications in the dye industry.
Used in Analytical Chemistry:
BENZOAZURINE serves as an analytical reagent, particularly in the detection of magnesium (Mg). Its unique chemical properties allow for accurate and reliable identification of this element in various samples.
Standard:
The standard for BENZOAZURINE includes the following properties:
Acid Resistance: ISO 4-5, AATCC 5
Alkali Resistance: ISO 2, AATCC 1
Light Fastness: ISO 1, AATCC 1-2
Soaping: ISO 1-2, AATCC 1
Water Fading: Not specified
Stain Fading: Not specified
These standards indicate the performance and durability of BENZOAZURINE in different conditions, making it suitable for various applications in the dye and analytical chemistry industries.
Preparation
3,3′-Dimethoxylbenzidine ?double nitride, and 4-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.
Air & Water Reactions
Azo dyes can be explosive when suspended in air at specific concentrations. Slightly soluble in water.
Reactivity Profile
BENZOAZURINE is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.
Fire Hazard
Flash point data are not available for BENZOAZURINE, but BENZOAZURINE is probably combustible.
Standard
Acid Resistance
Fading
Stain
ISO
4-5
AATCC
5
Check Digit Verification of cas no
The CAS Registry Mumber 2429-71-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,2 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2429-71:
(6*2)+(5*4)+(4*2)+(3*9)+(2*7)+(1*1)=82
82 % 10 = 2
So 2429-71-2 is a valid CAS Registry Number.
2429-71-2Relevant articles and documents
Synthesis and evaluation of analogues of congo red as potential compounds against transmissible spongiform encephalopathies
Rudyk, Helene,Knaggs, Michael H.,Vasiljevic, Snezana,Hope, James,Birkett, Chris,Gilbert, Ian H.
, p. 567 - 579 (2007/10/03)
The synthesis of analogues of the amyloid stain Congo red (1) as potential compounds against transmissible spongiform encephalopathies (TSEs) is reported. Using the direct method, aniline (2) or diamines such as 4,4′-diaminodiphenylsulfone (dapsone, 9), 3,3′-diaminodiphenylsulfone (10), benzidine (11), 3,3′-dimethoxybenzidine (12) or 3,3′-dichlorobenzidine (13) were diazotised to afford the corresponding diazonium salts, which without isolation, were directly used for coupling with a range of aromatic sulfonic or carboxylic acids to provide the corresponding truncated dyes analogues of Congo red, 4, 6, 8, and the symmetrical bis azoic dyes 14-19, 21-22, 24 and 26-29 as their sodium salts. Compounds were assayed in a cellular model of scrapie, a sheep TSE. Some of the compounds were shown to have similar activity to the lead compound Congo red. Molecular modelling was carried out to investigate potential structure-activity relationships (SARs) relating to the size and shape of Congo Red analogues. Within the range of compounds tested no discernible SARs were found.
