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HomeProduct name listDISPERSE RED 19

DISPERSE RED 19

  • CAS NO.:2734-52-3
  • Empirical Formula: C16H18N4O4
  • Molecular Weight: 330.34
  • MDL number: MFCD00044367
  • EINECS: 220-354-1
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-04-23 13:52:06
DISPERSE RED 19 Structural

What is DISPERSE RED 19?

Chemical properties

dark purple to dark red-brown crystalline powder

The Uses of DISPERSE RED 19

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.

Standard Ironing Fastness Light Fastness Persperation Fastness Washing Fastness
Fading Stain Fading Stain Fading Stain
ISO 4 4 5 5 4-5 5

Properties of DISPERSE RED 19

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
pka 14.19±0.10(Predicted)
form  Crystalline Powder
color  Dark purple to dark red-brown
Water Solubility  234.5ug/L(25 ºC)
EPA Substance Registry System C.I. Disperse Red 19 (2734-52-3)

Safety information for DISPERSE RED 19

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H317:Sensitisation, Skin
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.

Computed Descriptors for DISPERSE RED 19

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