Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol

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Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol Basic information
Product Name:Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol
Synonyms:Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol;Leuco Sulphur Blue 4;C.I.Leuco Sulphur Blue 4:C.I.53235
CAS:92623-80-8
MF:
MW:0
EINECS:296-413-0
Product Categories:
Mol File:Mol File
Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol Structure
Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol Chemical Properties
Safety Information
MSDS Information
Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol Usage And Synthesis
Preparationthis kind of dye is by 4-(2,4-Dinitrophenylamino)phenolaqueous solution and sulfide. Change the purity and degree of oxidation can get different colored light blue dye, usually color GuangYan degree directly with the purity in proportion, and oxidation of the final product is red. (a) will be the4-(2,4-Dinitrophenylamino)phenol 75% paste which in 90 ~ 92 ℃, at least 2 hours to add Sodium polysulfide, and in 106 ℃ reflux 3 hours, and Sodium chloride, and heating to 109 ~ 110 ℃, heat preservation 10 hours, diluted, 45 ℃ filtering, 70 ℃ drying; By this method the paste things in air oxidation, get color bright dye, its method is as follows: (b) water dilution from (a) paste content, add Sodium hydroxide, air oxidation 5 hours, salting out, filtering, and add Sodium carbonate drying; (C) if the increase of Sodium hydroxide to join quantity, air oxidation 14 ~ 16 hours, can further improve the brilliance, (d) will come from (C) with Sodium hydroxide has been the filter cake in 30 ℃ air oxidation about 18 hours, and then salting out, filtering and drying; (e) from the above product in disulfide and diacetyl Sodium acetate trihydrate solution, 95 ℃ treatment 5 hours, can still generate color is red and a brilliant dye. Dye with conventional method separation and drying (FIAT1313, 3229 -, – 230). Some vulcanization direct blue is by 4-(2,4-Dinitrophenylamino)phenolwith Sodium polysulfide solution in 135 ~ 140 ℃ calcination, then according to the above method and oxidation.
Properties and Applicationsnavy blue. Insoluble in water. In the Sodium sulfide solution solubility is good, for green light blue; In concentrated sulfuric acid for blue solution, dilution of dark after precipitation
Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol Preparation Products And Raw materials
Raw materialsFENURON-->4-(2,4-Dinitroanilino)phenol
Tag:Leuco sulfided 4-[(2,4-dinitrophenyl)amino]phenol(92623-80-8) Related Product Information
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