Sulphur Blue 5
Name:C.I.Sulphur Blue 5,C.I.53235
Molecular Structure:
C.I.Sulphur Blue 5,C.I.53235,CAS 60569-85-9,Sulphur Fast Blue,Sulphur Navy Blue 3R,Sulphur Navy Blue B
CAS Registry Number:60569-85-9
Manufacturing Methods :this kind of dye is by 4-(2,4-Dinitrophenylamino)phenol aqueous solution and sulfide. Change the purity and degree of oxidation can get different colored light blue dye,usually the color brilliance and purity of direct proportion, and oxidation of the final product is red. (a) will be the 4-(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)phenol with Sodium polysulfide solution in 135 ~ 140 ℃ calcination, then according to the above method and oxidation.
Properties and Applications:navy 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
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Fulling | Persperation Fastness | Soaping | |
| Moderate | Severe | ||||||
| ISO | 4 | 4 | 5 | 4 | 5 | 4-5 | 4 |
| AATCC | 4-5 | 3-4 | 4 | 4 | 4 | 4 | |
List of Suppliers:
Sulphur Fast Blue,Sulphur Navy Blue 3R,Sulphur Navy Blue B
Bengbu Yongyan Dyes & Chemicals Co. Ltd
Asashio Navy Blue 2B ( Kaseihin Kogyo Kyokai )
Blue 3R (Hangzhou Dikai Chemical Co Ltd)
Dycosulfur Dark Blue 3R (Sinochem Shanghai I/E Corp/Schecho PuDong Corporation)
Dycosulphur Dark Blue 3R (Sinochem Shanghai I/E Corp/Schecho PuDong Corporation)
Sulfur Dark Blue 3R (Brighten Colorchem BV)
Sulphur Blue 3R(Sinochem Jiangsu I/E Corp.)
Sulphur Blue 3R (Chemische Fabriek Triade BV)
Sulphur Dark Blue 3R( Sinochem Liaoning Import & Export Corporation )