10127-27-2

Basic information

• Product Name: ACID ORANGE 74
• Synonyms: Acid Orange 74 (18745);acid orange 74 (C.I. 18745);sodium [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulphonato(3-)]hydroxychromate(1-);Chromate(1-), 3-4,5-dihydro-3-methyl-5-(oxo-.kappa.O)-1-phenyl-1H-pyrazol-4-ylazo-.kappa.N1-2-(hydroxy-.kappa.O)-5-nitrobenzenesulfonato(3-)hydroxy-, sodium, (T-4)-;Chromate, [3-[(4,5-dihydro-3-methyl-5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato]hydroxy-, sodium;Chromate(1-), [3-[(4,5-dihydro-3-methyl- 5-oxo-1-phenyl-1H-pyrazol-4-yl)azo]-2-hydroxy-5-nitrobenzenesulfonato (3-)]hydroxy-, sodium;C.I. Acid Orange 74;ACID ORANGE 74, PURE
• CAS NO: 10127-27-2
• Molecular Formula: C16H12N5NaO7S
• Molecular Weight: 441.35
• EINECS: 233-357-8
• Product Categories: Dyes and Pigments;Organometallics;A;Stains and Dyes;Stains&Dyes, A to
• Mol File: 10127-27-2.mol
• Article Data: 0

Chemical Properties

• Appearance: red-brown to brown powder
• Density: 1.69g/cm3 at 19.96℃
• Vapor Pressure: 0.001Pa at 20℃
• CAS DataBase Reference: ACID ORANGE 74(CAS DataBase Reference)
• NIST Chemistry Reference: ACID ORANGE 74(10127-27-2)
• EPA Substance Registry System: ACID ORANGE 74(10127-27-2)

Safety Data

• Safety Statements: 24/25
• Hazardous Substances Data: 10127-27-2(Hazardous Substances Data)

Usage

Description

ACID ORANGE 74 is an azo dye characterized by its red-brown to brown powder form. It is soluble in water, ethanol, and slightly soluble in soluble fiber elements. The dye exhibits various shades of orange when dissolved in different solutions, such as dark yellow in strong sulfuric acid and orange in sodium hydroxide solution. It is commonly used in the textile industry for dyeing and printing, as well as in other applications like leather and electrochemical aluminum coloring.

Uses

Used in Textile Industry:
ACID ORANGE 74 is used as a dye for wool, polyamide fiber, and silk, providing direct dyeing and printing capabilities. It is particularly favored for influential products and wool carpet dyeing due to its vibrant color and compatibility with various materials.
Used in Leather Industry:
ACID ORANGE 74 is used as a coloring agent in the leather industry, enhancing the appearance and visual appeal of leather products.
Used in Electrochemical Aluminum Coloring:
ACID ORANGE 74 is employed in the electrochemical coloring of aluminum, contributing to the aesthetic enhancement of aluminum products.
Standard:
The light fastness, soaping, perspiration fastness, oxygen bleaching, and fastness to seawater of ACID ORANGE 74 are rated according to ISO and AATCC standards, with ratings ranging from 4 to 7, indicating its performance in various conditions.

Preparation

3-Amino-2-hydroxy-5-nitrobenzenesulfonic acid diazo, and 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one matches, will result in aqueous solution with formic acid chromium heating, in 130 ℃ keep 3 hours, make it into a chrome complex.

Standard

Light Fastness

Fading

Stain

ISO

6-7

AATCC

5

InChI:InChI=1/C16H13N5O7S/c1-9-14(16(23)20(19-9)10-5-3-2-4-6-10)18-17-12-7-11(21(24)25)8-13(15(12)22)29(26,27)28/h2-8,17,22H,1H3,(H,26,27,28)/p-2