85-74-5

Usage

Uses

Used in Dye Production:
4-aminonaphthalene-1,7-disulfonic acid is utilized as a dye intermediate for the synthesis of various dyes, particularly those employed in the textile industry. Its chemical structure allows for the creation of dyes with specific color characteristics and properties suitable for fabric coloring.
Used in Optical Brighteners and Fluorescent Dyes:
4-aminonaphthalene-1,7-disulfonic acid also serves as a key component in the manufacturing of optical brighteners and fluorescent dyes. Its ability to absorb and emit light makes it valuable in enhancing the appearance of materials and in applications requiring fluorescence.
Used in Medical Research:
4-aminonaphthalene-1,7-disulfonic acid has potential applications in the medical field as a fluorescent probe. It can be used for the detection and visualization of various biomolecules, aiding in research and diagnostic processes.
Used in Pharmaceutical Development:
Although not explicitly mentioned in the provided materials, the compound's fluorescent properties could also be harnessed in the development of pharmaceuticals, particularly for tracking drug distribution within the body or for imaging specific biological processes.

InChI:InChI=1/C10H9NO6S2/c11-9-3-4-10(19(15,16)17)8-5-6(18(12,13)14)1-2-7(8)9/h1-5H,11H2,(H,12,13,14)(H,15,16,17)

Upstream product

• 84-86-6 4-amino-1-naphthalenesufonic acid 
• 17894-99-4 8-amino-naphthalene-1,3,5-trisulfonic acid 
• 134-32-7 1-amino-naphthalene 
• 7664-93-9 sulfuric acid 
• 119-79-9 5-aminonaphthalene-2-sulfonic acid 

Downstream Products

• 23359-06-0 naphthalene-1,4,6-trisulfonic acid 
• 53280-41-4 5-anilino-naphthalene-2-sulfonic acid 
• 86-97-5 5-amino-2-naphthol 

Relevant academic research and scientific papers

Fiber-reactive disazo brown dye having vinylsulfone-type reactive group

A compound, or a salt thereof, represented by the following formula, STR1 wherein A is a substituted or unsubstituted phenylene or naphthylene group, B is STR2 in which R3 is a hydrogen atom or a lower alkyl, lower alkoxy, acylamino or ureido group, and R4 is a hydrogen atom or a lower alkyl or lower alkoxy group, R1 and R3 are independently a hydrogen atom or a substituted or unsubstituted lower alkyl group, X is a substituted or unsubstituted amino, lower alkoxy, substituted phenoxy or sulfo group, Y is --SO2 CH=CH2 or --SO2 CH2 CH2 Z, in which Z is a group capable of being split by the action of an alkali, and m is 2 or 3, which is useful for dyeing hydroxyl group- or amide group-containing fiber materials to give dyed products of a brown color having excellent fastness properties with good build-up property.

Process for the preparation of 1-naphthylamine-4,6-disulphonic acid and 1-naphthylamine-2,4,6-trisulphonic acid

Improved process for the preparation of 1-naphthylamine-4,6-disulphonic acid wherein the sulphonation of the 1-naphthylamine-6-sulphonic acid is carried out by adding the oleum at a temperature of 10° to 70° C., either to initially introduce sulphuric acid simultaneously with the 1-naphthylamine-6-sulphonic acid or to 1-naphthylamine-6-sulphonic acid, which is dissolved or suspended in sulphuric acid, and by using such a molar ratio of sulphur trioxide to 1-naphthylamine-6-sulphonic acid that 1.2 to 3 mols of sulphur trioxide are present per mol of 1-naphthylamine-6-sulphonic acid. The sulphonation mixture formed in the preparation can be sulphonated in a second sulphonation stage to 1-naphthylamine-2,4,6-trisulphonic acid.