8003-69-8 Usage
Description
Direct Black 80 is a blue-black uniform powder that is soluble in water, resulting in a blue-black solution. It is odorless and has properties such as acid resistance, alkali resistance, light fastness, and soaping. It is insoluble in organic solvents and exhibits different colors when mixed with various acids. The dye solution turns red light blue when mixed with a 10% sodium hydroxide solution.
Uses
Used in Textile Industry:
Direct Black 80 is used as a dye for cellulose fibers, providing a deep and long-lasting color to the fabric.
Used in Paper Industry:
Direct Black 80 is used for paper coloring, enhancing the appearance and quality of the paper products.
Used in Leather Industry:
Direct Black 80 is used for leather coloring, providing a consistent and durable color to the leather goods.
Preparation
N-(4-aminophenyl)acetamide diazo, The reduction of the conditions with?6-Amino-4-hydroxynaphthalene-2-sulfonic acid?coupling, acylation, three amino nitrogen, which then double first and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid, again in three alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling.
Air & Water Reactions
Water soluble. Azo dyes can be explosive when suspended in air at specific concentrations. Slightly soluble in water.
Reactivity Profile
Direct Black 80 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. Direct Black 80 is incompatible with oxidizing and reducing agents.
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition Direct Black 80 emits toxic fumes of nitrogen oxides.
Fire Hazard
Flash point data for Direct Black 80 are not available; however, Direct Black 80 is probably combustible. Dust may form explosive mixtures with air.
Standard
Acid Resistance
Fading
Stain
ISO
4
AATCC
3
Check Digit Verification of cas no
The CAS Registry Mumber 8003-69-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 8,0,0 and 3 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 8003-69:
(6*8)+(5*0)+(4*0)+(3*3)+(2*6)+(1*9)=78
78 % 10 = 8
So 8003-69-8 is a valid CAS Registry Number.
InChI:InChI=1/C36H26N8O11S3.3Na/c37-20-3-1-18-13-31(57(50,51)52)33(35(45)26(18)15-20)44-41-23-4-2-19-14-32(58(53,54)55)34(36(46)27(19)16-23)43-40-22-7-5-21(6-8-22)39-42-30-12-11-29(38)25-10-9-24(17-28(25)30)56(47,48)49;;;/h1-17,45-46H,37-38H2,(H,47,48,49)(H,50,51,52)(H,53,54,55);;;/q;3*+1/p-3/b42-39-,43-40+,44-41-;;;