Direct Yellow 27
Direct Yellow 27
CAS: 10190-68-8
Molecular Formula: C25H20N4Na2O9S3
Direct Yellow 27 - Names and Identifiers
| Name | Direct Yellow 27 |
| Synonyms | C.I. 13950 Direct yellow?7 Direct Yellow 27 Direct Yellow 27 C.I. Direct Yellow 27 direct yellow 27 (C.I. 13950) C.I. Direct Yellow 27, disodium salt C.I. Direct Yellow 27, disodium salt (8CI) 2-{4-[(E)-{1-[(2-methoxyphenyl)amino]-1,3-dioxobutan-2-yl}diazenyl]-3-sulfophenyl}-6-methyl-1,3-benzothiazole-7-sulfonic acid disodium 2-{4-[(E)-{1-[(2-methoxyphenyl)amino]-1,3-dioxobutan-2-yl}diazenyl]-3-sulfonatophenyl}-6-methyl-1,3-benzothiazole-7-sulfonate |
| CAS | 10190-68-8 |
| EINECS | 233-461-3 |
| InChI | InChI=1/C25H22N4O9S3/c1-13-8-10-18-22(23(13)41(35,36)37)39-25(27-18)15-9-11-17(20(12-15)40(32,33)34)28-29-21(14(2)30)24(31)26-16-6-4-5-7-19(16)38-3/h4-12,21H,1-3H3,(H,26,31)(H,32,33,34)(H,35,36,37)/b29-28+ |
Direct Yellow 27 - Physico-chemical Properties
| Molecular Formula | C25H20N4Na2O9S3 |
| Molar Mass | 662.62 |
| Density | 1.59g/cm3 |
| Storage Condition | Room Temprature |
| Refractive Index | 1.71 |
| Physical and Chemical Properties | Chemical properties yellow powder. The water solubility is general, and its aqueous solution is lemon yellow. Soluble in ethylene glycol ether, slightly soluble in ethanol, in benzene and carbon tetrachloride with trace infiltration, orange, insoluble in other organic solvents. In the aqueous solution, concentrated hydrochloric acid is added to produce golden yellow precipitate, and concentrated alkali is added to produce golden orange precipitate. It is golden yellow in concentrated sulfuric acid and slightly faded after dilution; it is a bright yellow solution in concentrated nitric acid; it is only partially dissolved in concentrated hydrochloric acid and is yellow and orange. Slightly sensitive to hard water, changes in the color light of copper and iron ions. |
| Use | Uses for cotton, hemp, viscose fabric dyeing, can also be used for silk, wool, nylon, leather, pulp dyeing |
Direct Yellow 27 - Risk and Safety
| Safety Description | S24/25 - Avoid contact with skin and eyes. |
Direct Yellow 27 - Upstream Downstream Industry
Direct Yellow 27 - Nature
| color index | 13950 |
| morphology | Fine Crystalline Powder |
| color | Yellow-orange |
| EPA chemical information | C. I. Direct Yellow 27, disodium salt (10190-68-8) |
Last Update：2024-04-10 22:29:15
Direct Yellow 27 - Uses and synthesis methods
use
1. direct sun-resistant light yellow 5GL is used for dyeing and direct printing of cotton, viscose fibers and their fabrics to obtain light yellow. Levelness and transdyeability are good, and the dyeing rate is general. In order to improve the wet fastness, it can be treated with fixing agent Y, or treated with urea-formaldehyde resin, and treated with fixing agent M. The color light turns green and dark. It is widely used in dyeing and printing of viscose fibers and their fabrics, and can also be used for dyeing silk, wool, nylon and vinylon. The polyester-viscose blended fabric is dyed in the same bath with disperse dyes, and it is completely non-stained on polyester. It can be mixed with direct sun-resistant emerald blue GL to form direct sun-resistant fruit green as a commercial dye supply.
2. It is mainly used for dyeing and printing viscose and cotton fabrics. After dyeing, it is treated with fixing agent M, and the color light turns dark. Treatment with fixing agent Y or urea-formaldehyde resin finishing, chromatic benzene unchanged. After finishing with urea-formaldehyde resin, the fastness to wet treatment is improved, and no additional fixation treatment is required. The product can also be used for silk, wool, brocade and vinylon and dyeing. Dyed silk, wool with no powder and acetic acid, dyed nylon with formic acid. This product is very close to the direct sun-resistant yellow 6GS color light and can be substituted. This product is often mixed with direct sun-resistant emerald blue GL and directly sun-resistant fruit green as a commercial dye supply.
production method
1. 2-aniline-6-methyl-7-sulfonic acid benzothiazole and acetanilide are used as basic raw materials. Dehydrothio-p-toluine-7-sulfonic acid is sulfonated with concentrated sulfuric acid in o-dichlorobenzene, and then sulfuric acid and sodium nitrite are used in o-dichlorobenzene medium for diazotization, and then under the action of sodium carbonate, The diazonium salt of 2-aniline-6-methyl-3-7-disulfonic acid benzothiazole is coupled with acetanilide, and then.
2. Using dehydrothio-p-toluidine -3 ', 7-disulfonic acid [2-(3'-sulfonic -4 '-amino) phenyl -6-methyl -7-sulfonic-benzothiazole] and o-methoxyacetanilide as raw materials, the dehydrothio-p-toluidine -3',7-disulfonic acid is first diazotized, and. The finished product is salted out, filtered, dried and crushed.
Last Update：2024-04-10 22:29:15
Direct Yellow 27 - Security information
| WGK Germany | 3 |
Last Update：2024-04-10 22:29:15
Supplier List
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CAS: 10190-68-8
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View History
Direct Yellow 27
ALA-CYS-ASP-THR-ALA-THR-CYS-VAL-THR-HIS-ARG-LEU-ALA-GLY-LEU-LEU-SER-ARG-SER-GLY-GLY-VAL-VAL-LYS-ASN-ASN-PHE-VAL-PRO-THR-ASN-VAL-
MECOPROP D3
DIETHYL CHLOROPHOSPHITE
ALA-CYS-ASP-THR-ALA-THR-CYS-VAL-THR-HIS-ARG-LEU-ALA-GLY-LEU-LEU-SER-ARG-SER-GLY-GLY-VAL-VAL-LYS-ASN-ASN-PHE-VAL-PRO-THR-ASN-VAL-
MECOPROP D3
DIETHYL CHLOROPHOSPHITE
Raw Materials for Direct Yellow 27
1,2-Dichlorobenzene
Sulfurous Acid
Benzothiazole
o-Acetoacetaniside
2-(4-Aminophenyl)-6-methyl-1,3-benzothiazole-7-sulfonic acid
4-(6-Methyl-2-benzothiazolyl)benzeneamine
2-(4-amino-3-sulphophenyl)-6-methylbenzothiazole-7-sulphonic acid
Sulfurous Acid
Benzothiazole
o-Acetoacetaniside
2-(4-Aminophenyl)-6-methyl-1,3-benzothiazole-7-sulfonic acid
4-(6-Methyl-2-benzothiazolyl)benzeneamine
2-(4-amino-3-sulphophenyl)-6-methylbenzothiazole-7-sulphonic acid