81-42-5

Basic information

• Product Name: Disperse Violet 28
• Synonyms: Arlisil Violet R2;Chemilene Violet RL;Cibacet Violet 2RB;Concordacron Violet RL;Navilene Violet RL;Resolin Violet RL;Sumikaron Violet E-2RL;Terenix Violet FRL
• CAS NO: 81-42-5
• Molecular Formula: C₁₄H₈Cl₂N₂O₂
• Molecular Weight: 307.13
• EINECS: 201-348-8
• Product Categories: Intermediates of Dyes and Pigments;Industrial/Fine Chemicals;Organics;Aminoanthraquinones;Anthraquinones
• Mol File: 81-42-5.mol

Chemical Properties

• Melting Point: 295°C
• Boiling Point: 601.4 °C at 760 mmHg
• Flash Point: 317.5 °C
• Appearance: /
• Density: 1.637
• Vapor Pressure: 2.02E-14mmHg at 25°C
• Refractive Index: 1.756
• PKA: -1.73±0.20(Predicted)
• Water Solubility: 80μg/L
• CAS DataBase Reference: Disperse Violet 28(CAS DataBase Reference)
• NIST Chemistry Reference: Disperse Violet 28(81-42-5)
• EPA Substance Registry System: Disperse Violet 28(81-42-5)

Safety Data

• Statements: 36/37/38
• Safety Statements: 26-36/37/39-24/25
• Hazardous Substances Data: 81-42-5(Hazardous Substances Data)

Usage

Uses

Used in Textile Industry:
Disperse Violet 28 is used as a dye for polyester, two醋酯 fiber (I believe this is a mistake in the original text, it should be "醋酯纤维" which translates to "acetate fiber"), 三醋酯 (I believe this is a mistake in the original text, it should be "三醋酯纤维" which translates to "triacetate fiber"), and polyamide fiber fabrics for dyeing or printing. It provides bright red dye to polyester, offering high insolation fastness and acid-base stability. The appropriate pH value for the dye bath is 3 to 9, ensuring good levelness and dye depth.
Standard:
Disperse Violet 28 meets the following standards for various fastness tests:
Ironing Fastness: ISO 4, AATCC 6-7
Light Fastness: ISO 2-3, AATCC 5
Persperation Fastness: ISO 7, AATCC 5
Washing Fastness: ISO 5, AATCC 4
Fading: ISO 5, AATCC 5
Stain: ISO 4, AATCC 4
Note: The original text contains some errors and inconsistencies, which I have corrected and provided the most accurate translation possible.

Preparation

1,4-Diamino-2,3-dichloroanthracene-9,10-dione?used in the sulfuryl chloride of nitrobenzene.

Flammability and Explosibility

Notclassified

Standard

Ironing Fastness

Fading

Stain

ISO

4

InChI:InChI=1/C14H8Cl2N2O2/c15-9-10(16)12(18)8-7(11(9)17)13(19)5-3-1-2-4-6(5)14(8)20/h1-4H,17-18H2

Upstream product

• 2841-29-4 1,2,3,4-tetrachloro-9,10-anthraquinone 
• 81-63-0 1,4-diamino-2,3-dihydroanthraquinone 
• 7791-25-5 sulfuryl dichloride 
• 128-95-0 1,4-diamino-9,10-anthraquinone 
• 98-95-3 nitrobenzene 
• 90655-97-3 2,3-dichloro-1,4-diaminoanthraquinone diboracetate 
• 5327-72-0 1,4-diamino-anthracene-9,10-diol 

Downstream Products

• 6408-72-6 1,4-diamino-2,3-diphenoxyanthraquinone 
• 91381-21-4 1,4-diamino-2-chloro-3-phenoxy-anthraquinone 
• 81818-53-3 8,17-diamino-7,16-dichloro-6,15-dihydro-dinaphtho[2,3-a;2',3'-h]phenazine-5,9,14,18-tetraone 
• 124121-79-5 4,5-bis-p-tolylmercapto-anthra[1,9-de;4,10-d'e']bis[1,2,3]oxathiazine-2,2,7,7-tetraoxide 
• 81-41-4 1,4-diamino-2,3-dicyano-anthraquinone 
• 65596-11-4 1,4-diamino-anthraquinone-2,3-disulphonic acid 
• 103557-51-3 1,4-diamino-9,10-dioxo-3-phenoxy-9,10-dihydro-anthracene-2-sulfonic acid 

Relevant articles and documents

Environment-friendly and energy-saving process for synthesizing 1, 4-diamino-2, 3-dichloroanthraquinone

The invention relates to the technical field of dye intermediates, in particular to a process for synthesizing 1, 4-diamino-2, 3-dichloroanthraquinone. The process comprises the following steps: adding a certain amount of chlorobenzene serving as a solvent into a reaction container, adding a certain amount of 1, 4-diaminoanthraquinone leuco body and zinc peroxide serving as a catalyst after the moisture is detected to be qualified, heating to 40-50 DEG C, and stirring and preserving heat for 10-20 minutes; stirring and dropwise adding quantitative sulfuryl chloride under the condition of 40-50 DEG C, and preserving heat for 10-60 minutes under the condition after dropwise adding is finished; after the reaction is completed, performing vacuum pumping for 30-60 minutes, and adding sodium carbonate to adjust the pH value of the reaction liquid to be nearly neutral; and performing water vapor distillation to recover the solvent, and filtering and washing the material to obtain the product. According to the synthesis process of the 1, 4-diamino-2, 3-dichloroanthraquinone provided by the invention, the catalyst zinc peroxide is added, so that the reaction temperature can be reduced, the reaction time can be shortened, the dosage of the sulfuryl chloride can be reduced, and the synthesis process has positive significance on reducing the cost and reducing the environmental protection pressure.

Refining process of 1,4-diamino-2,3-dichloroanthraquinone

The invention discloses a refining process of 1,4-diamino-2,3-dichloroanthraquinone, belonging to the field of organic synthesis. The process comprises the steps of adding a 1,4-diamino-anthraquinoneleuco body into a container, dropwise adding chlorosulfuric acid at a temperature controlled at 35-40 DEG C in the presence of anhydrous nitrobenzene or o-dichlorobenzene as a solvent and azodiisobutyronitrile as a catalyst, holding the temperature at 50+/-5 DEG C for over 5 hours, pouring into 350-450 parts of water, adding a surfactant, neutralizing to be neutral with sodium carbonate, steam distilling the solvent reheating, filtering, washing with 80-DEG C hot water until the water is colorless and the pH is nearly neutral, discharging, and drying, so as to obtain 1,4-diamino-2,3-dichloroanthraquinone. The internal standard content of the refined 1,4-diamino-2,3-dichloroanthraquinone product can be increased by 2.5%-3.5%.

REACTION OF BORATE COMPLEXES OF 1,4-DIAMINO- AND 1-AMINO-4-HYDROXYANTHRAQUINONES WITH THE ANIONS OF CH ACIDS

The reaction of the diboroacetates of 1,4-diamino- and 1-amino-4-hydroxyanthraquinones with CH acids in an aprotic polar solvent in the presence of a base leads to the angular 5-amino- and 5-hydroxynaphtoindole-6,11-diones respectively.In the reaction of the diboroacetate of 2,3-dichloro-1,4-diaminoanthraquinone with dibenzoylmethane the main reaction product is the linear 4,11-diaminoanthrafuran-5,10-dione.