6232-51-5

Usage

Uses

Used in Textile Industry:
Sodium 2-hydroxy-3-[(2-hydroxy-1-dibenzofuryl)azo]-5-nitrobenzenesulphonate is used as a dye for textiles. It provides good ironing fastness, light fastness, and perspiration fastness, making it suitable for various types of fabrics.
Used in Quality Standard:
Sodium 2-hydroxy-3-[(2-hydroxy-1-dibenzofuryl)azo]-5-nitrobenzenesulphonate is used to meet the ISO 4-5 standard for colorfastness in textiles. It ensures that the color of the fabric remains consistent even after multiple washes and exposure to different conditions.
Used in Fulling Process:
Sodium 2-hydroxy-3-[(2-hydroxy-1-dibenzofuryl)azo]-5-nitrobenzenesulphonate is used in the fulling process to improve the texture and appearance of the fabric. It helps in achieving a smooth and even finish.
Used in Soaping Process:
Sodium 2-hydroxy-3-[(2-hydroxy-1-dibenzofuryl)azo]-5-nitrobenzenesulphonate is used in the soaping process to enhance the softness and luster of the fabric. It helps in removing any impurities and provides a clean and smooth surface.
Used in Water and Alkali Resistance:
Sodium 2-hydroxy-3-[(2-hydroxy-1-dibenzofuryl)azo]-5-nitrobenzenesulphonate provides good water and alkali resistance, ensuring that the fabric maintains its color and quality even when exposed to water and alkaline solutions.
Used in Acid Resistance:
Sodium 2-hydroxy-3-[(2-hydroxy-1-dibenzofuryl)azo]-5-nitrobenzenesulphonate also offers acid resistance, making it suitable for use in environments with acidic conditions. This helps in preserving the fabric's color and quality over time.

Preparation

3-Amino-2-hydroxy-5-nitrobenzenesulfonic acid diazotization, and 2-Hydroxydibenzofuran coupling.

Standard

Ironing Fastness

Alkali

Acid

ISO

4-5

InChI:InChI=1/C18H11N3O8S.Na/c22-12-5-6-14-16(10-3-1-2-4-13(10)29-14)17(12)20-19-11-7-9(21(24)25)8-15(18(11)23)30(26,27)28;/h1-8,19,23H,(H,26,27,28);/q;+1/p-1/b20-17+;