| Identification | Back Directory | [Name]
Copper, 2,2'-[carbonylbis[imino(1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis[benzoic acid] complex | [CAS]
37279-47-3 | [Synonyms]
Direct Brown 112
Helion Brown 8RLL
Triamin Brown 8RLL.
Direct Bordeaux 4GM
Direct Light Brown 8R
C.I. Direct Brown 112
Tertrodirect Light Brown 8R
C.I.Direct Brown 112:C.I.29166
Copper, 2,2'-[carbonylbis[imino(1-hydroxy-3-sulfo-6,2-naphthalenediyl)azo]]bis[benzoic acid] complex | [EINECS(EC#)]
253-440-2 | [Molecular Formula]
C35H18N6O13S2.2Na.2Cu |
| Hazard Information | Back Directory | [Chemical Properties]
Brown powder. Easily soluble in hot water, with a solubility of 15g/L in water (60°C). The aqueous solution is red. Slightly soluble in ethanol. Red in concentrated sulfuric acid, remaining red after dilution. Slightly soluble in concentrated hydrochloric acid, pale yellow, gradually turning orange-yellow to red after dilution. Slightly soluble in 40% sodium hydroxide solution, pale orange. The color changes slightly when exposed to copper ions and becomes slightly yellower when exposed to iron ions. | [Preparation]
2-Aminobenzoic acid (2 Moore) diazo, and N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea?coupled with copper sulfate, and complex. | [Properties and Applications]
red light brown. Brown powder. Soluble in hot water for red, solubility of 15 g/L (60 ℃), 20 g/L (97 ℃), and adequate soluble in ethanol, slightly soluble in strong hydrochloric acid for yellow, dilute after gradually from orange red. The strong sulfuric acid for red, diluted is still red; In 40% of sodium hydroxide solution in a slightly soluble for light yellow, add water dilute, deepen primary colors. Dyeing copper ions in a slight change color in a little yellow colored light iron ion. Mainly used to viscose filament, natural silk, rayon, wool, linen and its various blended fabric dyeing and printing directly. Also can be used for leather products dyeing.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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3
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3
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7
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3-4
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2-3
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3-4
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1-2
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AATCC
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4
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2
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7
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2
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3-4
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