| Identification | Back Directory | [Name]
DISPERSE RED 19 | [CAS]
2734-52-3 | [Synonyms]
CI 11130
DISPERSE RED 19
C.I.Disperse Red 19
Disperse Red 19, pure
disperse red 19 (C.I. 11130)
Disperse Red 19 Dye content 97 %
2,2'-(4'-Nitroazobenzene-4-ylimino)bisethanol
2,2'-[[4-[(4-nitrophenyl)azo]phenyl]imino]bisethanol
2,2’-[[4-[(4-nitrophenyl)azo]phenyl]imino]bis-ethano
Ethanol, 2,2'-[[4-[(4-nitrophenyl)azo]phenyl]imino]bis-
2-[(2-Hydroxyethyl)[4-(4-nitrophenylazo)phenyl]amino]ethanol | [EINECS(EC#)]
220-354-1 | [Molecular Formula]
C16H18N4O4 | [MDL Number]
MFCD00044367 | [MOL File]
2734-52-3.mol | [Molecular Weight]
330.34 |
| Chemical Properties | Back Directory | [Appearance]
dark purple to dark red-brown crystalline powder | [Melting point ]
>300 °C(lit.)
| [Boiling point ]
467.79°C (rough estimate) | [density ]
1.1843 (rough estimate) | [refractive index ]
1.6000 (estimate) | [Colour Index ]
11130 | [form ]
Crystalline Powder | [pka]
14.19±0.10(Predicted) | [color ]
Dark purple to dark red-brown | [Water Solubility ]
234.5ug/L(25 ºC) | [λmax]
495 nm | [EPA Substance Registry System]
C.I. Disperse Red 19 (2734-52-3) |
| Hazard Information | Back Directory | [Chemical Properties]
dark purple to dark red-brown crystalline powder | [Uses]
DR19 can be used as red side groups in an NLO polyester for potential application in optical switching devices. It can also be bonded with polyurethane to form stable films, which may be used in the fabrication of analog systems. | [Preparation]
4-Nitrobenzenamine diazo, and N,N-dihydroxyethylaniline?coupling. | [General Description]
Disperse Red 19 (DR19) is widely used as a non-linear optical (NLO) dye with two hydroxyl (OH) groups, which can covalently connect with the base polymer. It can be linked as a side chain group that provides thermal and photo stability to the polymeric unit. | [Properties and Applications]
Yellow?red .red powder. Soluble in ethanol, acetone and benzene. The strong sulfuric acid for yellow, diluted for brown; In strong hydrochloric acid for red, and then into a brown. Used for polyester, vinegar fiber, three vinegar fiber, polyamide, acrylic and their blended fabric dyeing, also used for sheep and plastic shading, hue for yellow light red.
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Standard
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Ironing Fastness
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Light Fastness
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Persperation Fastness
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Washing Fastness
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Fading
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Stain
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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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4
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4
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5
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5
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4-5
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5
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