3734-67-6 Usage
Chemical Properties
Dark red powder
Uses
Different sources of media describe the Uses of 3734-67-6 differently. You can refer to the following data:
1. Acid Red 1 is a synthetic red azo dye used as food additive. Studies have shown that Red Acid 1 is converted to toxic compound aniline and may ultimately interfere with blood haemoglobin.
2. A useful stain with color index of 18050.
Definition
ChEBI: An organic sodium salt that is the disodium salt of 5-acetamido-4-hydroxy-3-(phenyldiazenyl)naphthalene-2,7-disulfonic acid.
Preparation
aniline diazo, and 4-Acetamido-5-hydroxynaphthalene-2,7-disulfonic acid coupling.
Flammability and Explosibility
Nonflammable
Properties and Applications
colourful red blue light. Red powder. Soluble in water solution for big red, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. Meet strong sulfuric acid is blue light red, it will be diluted in a yellow after red; Meet nitric acid solution is orange turn orange; Meet strong hydrochloric acid generation red precipitation, dilute it dissolve. The aqueous solution of dyes and strong hydrochloric acid is product red; Add sodium hydroxide is orange brown. Copper ions in dyeing and dark blue colour and lustre to take; Iron ion in color with blue and light. Good levelness. Mainly used in strong acid medium in the wool dyeing and the piece dyed wool. Can be directly in the wool fabrics, polyamide fiber and fabric silk printing. Also can be used for leather dyeing, also can be used in the manufacture of color amylum, cosmetics, paper, soap and timber colorants, is used to make the ink. The Barium salt can be used in organic pigments.
Standard
Light Fastness
Soaping
Persperation Fastness
Oxygen bleaching
Fastness to seawater
Fading
Stain
Fading
Stain
Fading
Stain
ISO
5
3
5
4-5
1
4
2
1
AATCC
4
2
2
2
1
1
2
2
Standard
Light Fastness
Fading
Stain
ISO
5
AATCC
4
Purification Methods
Salt it out three times with sodium acetate, then repeatedly extract it with EtOH. See Solochrome Violet R in “Aromatic compounds”, Chapter 4. [McGrew & Schneider J Am Chem Soc 72 2547 1950.]
Check Digit Verification of cas no
The CAS Registry Mumber 3734-67-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,3 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3734-67:
(6*3)+(5*7)+(4*3)+(3*4)+(2*6)+(1*7)=96
96 % 10 = 6
So 3734-67-6 is a valid CAS Registry Number.
InChI:InChI=1/C18H15N3O8S2.2Na/c1-10(22)19-14-9-13(30(24,25)26)7-11-8-15(31(27,28)29)17(18(23)16(11)14)21-20-12-5-3-2-4-6-12;;/h2-9,20H,1H3,(H,19,22)(H,24,25,26)(H,27,28,29);;/q;2*+1/p-2/b21-17-;;
3734-67-6Relevant articles and documents
A method for continuously preparing azo dye in micro-reactors
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Paragraph 0078-0084, (2018/04/01)
The invention discloses a method for continuously preparing azo dye in micro-reactors in the field of dye synthesis. The azo dye is prepared by firstly subjecting a sodium nitrite solution, an aromatic primary amine and an inorganic acid to a diazotization reaction at room temperature in a first micro-reactor to generate an aromatic primary amine diazonium salt; and then subjecting the aromatic primary amine diazonium salt and a coupling component to a coupling reaction in a second micro-reactor to generate the azo dye. Continuous preparation of the azo dye is achieved by utilizing the micro-reactors, a process is simple, a reaction period is short, and a reaction process can be easily monitored and controlled. Addition of an excessive amount of the sodium nitrite and the coupling agent to increase the reaction speed is not required so that raw materials are saved and the method is environmentally friendly. Reaction liquid in the micro-reactors achieves high-speed collision mixing, a uniform reaction environment is formed immediately, the reaction efficiency is high, and the yield and quality of a reaction product are greatly improved.
