Direct blue 71(C.I.34140)
Direct Blue 71
CAS: 4399-55-7
Molecular Formula: C40H23N7Na4O13S4
Direct blue 71(C.I.34140) - Names and Identifiers
Direct blue 71(C.I.34140) - Physico-chemical Properties
| Molecular Formula | C40H23N7Na4O13S4 |
| Molar Mass | 1029.87 |
| Solubility | DMSO (Slightly, Sonicated), Methanol (Slightly, Sonicated) |
| Appearance | Powder |
| Color | Black |
| Storage Condition | Refrigerator |
| Physical and Chemical Properties | Black powder. Water-soluble General, its aqueous solution is blue; Slightly soluble in ethylene glycol ether, very slightly soluble in ethanol, insoluble in other organic solvents. The addition of concentrated hydrochloric acid to the aqueous solution resulted in a blue precipitate, and the addition of concentrated alkali resulted in a reddish purple precipitate. It is blue to gray-black in concentrated sulfuric acid, and produces red violet precipitate after dilution; It is dark brown in concentrated nitric acid; It is insoluble in concentrated alkali solution; It is blue-purple in concentrated ammonia solution. There was slight change in color of copper and iron ions during staining. |
Direct blue 71(C.I.34140) - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| HS Code | 32041400 |
Direct blue 71(C.I.34140) - Reference Information
| color index | 34140 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | direct sun-resistant blue B2RL is used for dyeing and direct printing of cotton and viscose fabrics to obtain red and dark blue. The dyeing rate is good, and the transfer and levelness are poor. After dyeing, the color light is slightly turned green by fixing agent treatment or resin finishing. It can also be used for dyeing silk and its fabrics, as well as dyeing and printing of viscose vinylon blended fabrics, and can also dye polyester viscose blended fabrics in the same bath with disperse dyes. It is also used for coloring leather, paper and soap. It is mainly used for dyeing cellulose fibers such as cotton, hemp and viscose. It is also used for dyeing silk, nylon and viscose/brocade blended fabrics. It can also be used for dyeing leather, paper, soap, and dry casein formaldehyde plastic. In addition to dyeing, it can also be used for direct printing of cotton and viscose fabrics. When printing deep and thick patterns, urea and sodium hydrogen phosphate should be added to prepare the color paste. It is mainly used for dyeing cotton, hemp, viscose and other fabrics, and can also be used for dyeing silk, nylon, leather, pulp, etc. |
| production method | amino c acid, methyl naphthylamine, 1,7 cliffic acid and j acid are the basic raw materials. Amino C acid is diazotized (primary diazotization), coupled with methylnaphthylamine (primary coupling), the primary coupling is re-diazotized (secondary diazotization), and then with 1,7-Cliff acid is coupled (secondary coupling), the secondary coupling is re-diazotized (tertiary diazotization), and then coupled with J acid (tertiary coupling). It is then salted out, filtered and dried. Kg/ton amino C acid (100%) 230 soda ash (industrial) 450 carmine (100%) 110 caustic soda (100%) 2101, 7-cliffic acid (100%) 160 sodium acetate 630J acid (100%) 160 urea 15 sodium nitrite (industrial) 177 industrial soap 13 sulfuric acid (100%) 300 refined salt 2200 hydrochloric acid (31%) 600 with 2-naphthylamine -4,8-disulfonic acid (amino C acid), 1-naphthylamine, 8-amino -2-naphthylsulfonic acid (1,7-Cleve's Acid, 1,7-Cliff acid), and J acid are used as raw materials. First, 3-amino -1,5-naphthyldisulfonic acid is diazotized, coupled with 1-naphthylamine for the first time, and then the coupled product is diazotized, and 1, 7-Cliff acid is coupled for the second time, and then the coupling product is diazotized, and the product is coupled with J acid for the third time to obtain the product. The finished product is salted out, filtered, dried and crushed.. 11.45kg of amino C acid (100%), 2.61kg of sodium nitrite (100%), 12.5kg of sulfuric acid (d154 1.383) were diazotized to obtain (I), and (II) was obtained by coupling with 5.5kg 1-naphthylamine for 5h. Then (II) is diazotized and coupled with 9.36kg 1, 7-cliffic acid for 7h to obtain (III). Then (III) diazotization, coupling with 8.6kg J acid (100%) for 2 hours, heating to 70 ℃, salting out with 80kg of salt (industrial products), filtering and drying to obtain dye. |
Last Update：2024-04-10 22:29:15
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View History
Direct blue 71(C.I.34140)
2-(3-硝基亚苄基)乙酰乙酸2-甲氧基乙酯
[(1S,2R)-1-苄基-2-羟基-3-[异丁基[(4-硝基苯基)磺酰基]氨基]丙基]氨基甲酸叔丁酯
Tricyclo[2.2.1.02,6]heptanone, 5-[(acetyloxy)Methyl]- (9CI)
SYRINGETIN-3-GALACTOSIDE(SECONDARY STANDARD)
1-(5-氟戊基)吲哚-3-甲酸-1-萘酯
5-(2-氨基丙基)-2-甲氧基苯磺酰胺
OTAVA-BB BB7211740014
3-(2,2-二氯乙烯基)-2,2-二甲基环丙基羧酸甲基酯
25 MG CALPAIN INHIBITOR IIRESEARCH GRADE
2-(3-硝基亚苄基)乙酰乙酸2-甲氧基乙酯
[(1S,2R)-1-苄基-2-羟基-3-[异丁基[(4-硝基苯基)磺酰基]氨基]丙基]氨基甲酸叔丁酯
Tricyclo[2.2.1.02,6]heptanone, 5-[(acetyloxy)Methyl]- (9CI)
SYRINGETIN-3-GALACTOSIDE(SECONDARY STANDARD)
1-(5-氟戊基)吲哚-3-甲酸-1-萘酯
5-(2-氨基丙基)-2-甲氧基苯磺酰胺
OTAVA-BB BB7211740014
3-(2,2-二氯乙烯基)-2,2-二甲基环丙基羧酸甲基酯
25 MG CALPAIN INHIBITOR IIRESEARCH GRADE