6373-74-6 Usage
Description
Acid Orange 3 is a dark yellow orange dye, appearing as an orange-yellow powder. It is soluble in both cold and hot water, with a 90°C water solubility of 50 g/L. It is also easily soluble in ethanol, resulting in an orange-brown color. The dye exhibits a yellow color when used with strong sulfuric acid, and its aqueous solution is yellow. Acid Orange 3 has poor discharge properties and is affected by copper ions, which cause a greenish shade, and iron ions, which result in a darker color.
Uses
Used in Textile Industry:
Acid Orange 3 is used as a dye for wool, polyamide fiber, and silk dyeing, as well as for leather shading. It is primarily used for dyeing nylon and can be used alone or in combination with other dyes to create various colors.
Standard:
The light fastness, soaping, perspiration fastness, oxygen bleaching, and fastness to seawater of Acid Orange 3 are rated on a scale of 1 to 6, with 1 being the lowest and 6 being the highest. According to the provided materials, the ratings for Acid Orange 3 are as follows:
Light Fastness: ISO 5-6, AATCC 5-6
Soaping: ISO 1, AATCC 1-2
Perspiration Fastness: ISO 2, AATCC 1-2
Oxygen Bleaching: ISO 3, AATCC 3
Fastness to Seawater: ISO 1, AATCC 1-2
General Description:
Acid Orange 3 is a brown to dark brown microcrystalline powder.
Preparation
5-Amino-2-(phenylamino)benzenesulfonic acid and 1-Chloro-2,4-dinitrobenzene?condensation.
Air & Water Reactions
Slightly soluble in water.
Reactivity Profile
Organonitrates range from slight to strong oxidizing agents. If mixed with reducing agents, including hydrides, sulfides and nitrides, they may begin a vigorous reaction that culminates in a detonation. The aromatic nitro compounds may explode in the presence of a base such as sodium hydroxide or potassium hydroxide even in the presence of water or organic solvents. The explosive tendencies of aromatic nitro compounds are increased by the presence of multiple nitro groups. Nitroalkanes are milder oxidizing agents, but still react violently with reducing agents at higher temperature and pressures.
Health Hazard
ACUTE/CHRONIC HAZARDS: When heated to decomposition Acid Orange 3 emits highly toxic fumes of SOx, NOx and Na2O.
Fire Hazard
Flash point data for Acid Orange 3 are not available; however, Acid Orange 3 is probably combustible.
Flammability and Explosibility
Nonflammable
Standard
Light Fastness
Fading
Stain
ISO
5-6
AATCC
5-6
Check Digit Verification of cas no
The CAS Registry Mumber 6373-74-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,3,7 and 3 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 6373-74:
(6*6)+(5*3)+(4*7)+(3*3)+(2*7)+(1*4)=106
106 % 10 = 6
So 6373-74-6 is a valid CAS Registry Number.
InChI:InChI=1/C18H14N4O7S.Na/c23-21(24)14-7-9-15(17(11-14)22(25)26)20-13-6-8-16(18(10-13)30(27,28)29)19-12-4-2-1-3-5-12;/h1-11,19-20H,(H,27,28,29);/q;+1/p-1
