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: 2026-01-13 11:27:03
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) |
 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
New Products
2-(2-Ethoxyphenoxy)ethyl bromide 1,3-Dibromo-2,2-dimethoxypropane 8-Bromo-7-(2-butynyl)-3-methyl xanthine 5-Chlorothiophene-2-carboxylic acid 8-Bromo-3-methyl xanthine Maleic hydrazide 4-Bromobenzaldehyde 3-Bromobenzaldehyde 2-Chlorobenzaldehyde 3-Fluorobenzaldehyde 3-Amino-3-(3-fluorophenyl)propanoic acid 1-Propyl-4-piperidone 2,3-Dihydro-5,6-dimethoxy-2-(4-piperidinylmethyl)-1H-inden-1-one hydrochloride 2-Fluoro-6-iodobenzoic acid 3-(4-Bromo-3-methyl-2-oxo-2,3-dihydro-1h-benzo[d]imidazol-1-yl)piperidine-2,6-dione 1-Boc-4-cyanopiperidine 3-Pyridineacrylic acid ethyl 2-oxo-2,3,9,10-tetrahydro-1H-pyrido[3',4':4,5]pyrrolo[1,2,3-de]quinoxaline-8(7H)-carboxylate N-Nitroso Nortriptyline Vardenafil Bis-sulphonamide(Dimer) 1-nitro-3,5-dimethyl adamantine (NMEM) Nabumetone Impurity 5 3-(2-aminoethyl) benzene sulfonamide 2,2-dibromo-1-cyclopropyl-2-(2-fluorophenyl)ethan-1-oneRelated products of tetrahydrofuran
![2,2'-[[4-[(2,4-dinitrophenyl)azo]phenyl]imino]bisethanol](https://img.chemicalbook.in/CAS/GIF/60129-67-1.gif)
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