ACID ORANGE 3, TECHNICAL GRADE

Name	Acid Orange 3
Synonyms	CI 10385 C.I. 10385 Acid Orange 3 FASTYELLOWLIGHT C.I. Acid Orange 3 acid fast yellow ag acid fast yellow e5r Acid orange 3 (C.I. 10385) acid leather light brown g ACID ORANGE 3, TECHNICAL GRADE 5-[(2,4-dinitrophenyl)amino]-2-(phenylamino)benzenesulfonate sodium 5-[(2,4-dinitrophenyl)amino]-2-(phenylamino)benzenesulfonate 2-anilino-5-(2,4-dinitroanilino)-benzenesulfonic aci monosodium salt Benzenesulfonic acid, 5-(2,4-dinitrophenyl)amino-2-(phenylamino)-, monosodium salt
CAS	6373-74-6
EINECS	228-921-5
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

Molecular Formula	C18H13N4NaO7S
Molar Mass	452.37319
Density	1.6[at 20℃]
Melting Point	>190oC
Water Solubility	2.86g/L at 20℃
Solubility	DMSO (Slightly, Heated, Sonicated), Methanol (Slightly), Water (Slightly)
Vapor Presure	0Pa at 25℃
Appearance	Solid
Color	Very Dark Red to Very Dark Brown
Storage Condition	Room Temperature, under inert atmosphere
Physical and Chemical Properties	Orange-yellow powder. Very soluble in cold water and hot water, the solubility in water is 50g/L (90 degrees C), the aqueous solution is yellow. Soluble in ethanol, orange-brown. It is yellow in concentrated sulfuric acid, and turns dark yellow after dilution, with precipitation. When staining, the color light of copper ion was slightly green, and the color light of iron ion was darkened.

Safety Description	24/25 - Avoid contact with skin and eyes.
HS Code	32041200

LogP	-0.4 at 20℃
(IARC) carcinogen classification	3 (Vol. 57) 1993
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Use	acid orange E-3R can be used for dyeing wool, silk, nylon, and also for dyeing textiles. Mainly used for dyeing nylon, can be used alone, can also be used as three primary colors for color matching. Levelness and migration were good. When dyeing blended fabrics, cellulose fiber, acetate fiber are not stained, can also be used for leather coloring.
production method	with 2, 4-dinitrochlorobenzene and 2-anilino-5-aminobenzenesulfonic acid as raw materials, both can be condensed at 50-60 °c by addition of phase transfer catalyst TEBA (or PEG400-600) under basic conditions to give the product. The product is obtained by filtration, drying and grinding..
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)

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CAS: 6373-74-6
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ACID ORANGE 3, TECHNICAL GRADE

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