C.I. Acid Blue 113
Acid Blue 113
CAS: 3351-05-1
Molecular Formula: C32H21N5Na2O6S2
C.I. Acid Blue 113 - Names and Identifiers
| Name | Acid Blue 113 |
| Synonyms | C.I. 26360 Acid Blue 113 C.I. Acid Blue 113 Acid Blue 113 (C.I.) acid blue 113 (C.I. 26360) C.I. Acid Blue 113, disodium salt (8CI) sodium 8-phenylamino-5-(4-(3-sulphonatophenylazo)-1-naphthylazo)naphthalenesulphonate disodium 8-anilino-5-[[4-(3-sulfonatophenyl)azo-1-naphthyl]azo]naphthalene-1-sulfonate |
| CAS | 3351-05-1 |
| EINECS | 222-111-5 |
| InChI | InChI=1/C32H23N5O6S2.2Na/c38-44(39,40)23-11-6-10-22(20-23)34-35-27-16-17-28(25-13-5-4-12-24(25)27)36-37-29-18-19-30(33-21-8-2-1-3-9-21)32-26(29)14-7-15-31(32)45(41,42)43;;/h1-20,33H,(H,38,39,40)(H,41,42,43);;/q;2*+1/p-2 |
C.I. Acid Blue 113 - Physico-chemical Properties
| Molecular Formula | C32H21N5Na2O6S2 |
| Molar Mass | 681.65 |
| Storage Condition | room temp |
| Physical and Chemical Properties | Chemical properties green black powder. It is soluble in water, the aqueous solution is purple, and the concentrated hydrochloric acid is purple-red; the concentrated sodium hydroxide solution is jujube-red. Soluble in ethanol is purple blue, also soluble in glycol ether, slightly soluble in acetone, insoluble in other organic solvents. It is dark green and blue in concentrated sulfuric acid, and becomes dark green and blue to grayish purple after dilution; it is orange brown in concentrated nitric acid. When dyeing, the color changes slightly when meeting copper ions; when meeting iron ions, the color becomes slightly lighter. |
| Use | Uses weak acid dark blue 5R is mainly used for dyeing wool, silk and nylon, and can also be used for dyeing wool/viscose blended fabrics with direct dyes in the same bath. Also used for leather, paper, biological products coloring. |
C.I. Acid Blue 113 - Risk and Safety
| Safety Description | S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
C.I. Acid Blue 113 - Upstream Downstream Industry
C.I. Acid Blue 113 - Nature
| color index | 26360 |
| EPA chemical information | C. I. Acid Blue 113 (3351-05-1) |
Last Update：2024-04-10 22:29:15
C.I. Acid Blue 113 - Production method
After the first diazotization, m-aminobenzenesulfonic acid is coupled with methylnaphthylamine hydrochloride, and the resulting product is nitrided for the second time, and then coupled with phenyl periacid for the second time, after neutralization, salting out. The process is as follows. 1. Drain 600L of water in a diazo barrel for the first time, add sodium m-aminobenzene sulfonate solution (equivalent to 78kg of 100% m-aminobenzene sulfonate), and stir evenly. Add ice to cool down to 3-5 ℃, then add 173kg of 30% hydrochloric acid, adjust the volume to 1500L after m-aminobenzenesulfonic acid is precipitated, and the temperature is about 5 ℃. Then, the 30% sodium nitrite solution equivalent to 1001.05kg was put into the liquid level, the diazotization temperature was maintained at 5-8 ℃, and stirred for 1h. Check the end point (potassium iodide starch test paper is slightly blue, Congo red test paper is blue). Diazonium salt is a transparent liquid. 2. For the first coupling, put the diazonium salt of m-aminobenzenesulfonic acid into the coupling barrel, add ice to cool the temperature to 0 ℃, under vigorous stirring, dissolve and add the methyl naphthylamine hydrochloric acid salt within 10min, and add crushed ice at the same time, and keep the temperature at about 10 ℃. After adding the sample, it was used as a wetting circle test to determine the excess of carmine. After stirring for 1 hour, 240kg of 15% dilute liquid alkali was used to neutralize to pH3.6 within 1.5 hours to make carmine still excessive. 900kg of refined salt is added for salting-out, and then 66kg of 15% dilute liquid alkali is used for the second neutralization to pH5.8-6.1. Methylnaphthylamine should still be excessive. After stirring for 1h, the temperature is 16-18 ℃, and 166kg of 15% dilute liquid alkali is used to make the pH reach 9, so that the reactant becomes red sodium salt. 3. add ice to monoazo compound for the second diazotization, cool down to 4 ℃, add 30% sodium nitrite solution (equivalent to 100 A.5kg), add cold 22.5% dilute sulfuric acid into reactants within 2-3min under stirring, maintain the temperature at 7-8 ℃, and stir for 3 hours. Filtering. The filter cake is mixed with ice water, and water is added to 2000L to make the diazonium salt into a uniform suspension at a temperature below 5 ℃. 4. For the second coupling, 1500L phenyl periacid aqueous solution (containing 139.5kg of 100% phenyl periacid) is put into a coupling barrel, cooled to 12 ℃ under stirring, adjusted to 2500L in volume, and diazonium salt suspension and sodium acetate solution (140kg of sodium acetate dissolved in 300L of water) are added in proportion at the same time, and the addition is completed within about 1.5h to 2h. The pH of the coupling reaction is controlled between 4-4.2 and the temperature is 11-12 ℃, and the phenyl peripheral acid in the coupling solution should be obviously excessive. Stir the reactant for 4 hours, add 176kg of 15% diluted alkali to make the pH reach 8-8.5, heat to 90 ℃, slowly add salt (17% by reactant volume) for salting out. Dilute with water, keep temperature at 65 ℃, press filter, blow for 4 hours, and dry at about 80 ℃. Crush, add anhydrous sodium sulfate for standardization. The amount obtained is 390kg(100%). Raw material consumption (kg/t) m-aminobenzenesulfonic acid (100%) 220 sodium nitrite 183 methyl naphthylamine 170 sodium acetate 345 phenyl peripheral acid (100%) 365 refined salt 4933 hydrochloric acid (31%) 583 sulfuric acid (100%) 314
Last Update：2024-04-10 22:29:15
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CAS: 3351-05-1
Tel: 18301782025
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CAS: 3351-05-1
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
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View History
Raw Materials for C.I. Acid Blue 113
Water
Metanilic acid
1-Naphthylamine
Congo red paper
NITROUS ACID
Potassium iodide statch paper
8-Anilino-1-naphthalenesulfonic acid
Metanilic acid
1-Naphthylamine
Congo red paper
NITROUS ACID
Potassium iodide statch paper
8-Anilino-1-naphthalenesulfonic acid
Downstream Products for C.I. Acid Blue 113