Acid Blue 18
Name:C.I.Acid Blue 18,C.I.50230
Molecular Structure: azine class
C.I.Acid Blue 18,C.I.50230,CAS 6448-97-1,779.77,C33H27N5Na2O9S3
Molecular Formula:C33H27N5Na2O9S3
Molecular Weight: 779.77
CAS Registry Number:6448-97-1
Manufacturing Methods : the molecular than 2-Amino-5-(4-nitroanilino)benzenesulfonic acid, 3-(Ethyl(phenyl)amino)methyl)benzenesulfonic acid, 2-Aminobenzenesulfonic acid with heavy chromium acid potassium and sulfuric acid oxidation, then use 4-Aminobenzenesulfonic acid further oxidation, reduction with the iron powder.
Properties and Applications: red light navy blue. Soluble in cold water, hot water, ethanol to blue. The strong sulfuric acid for green, diluted into blue to red light purple. In aqueous solution for the navy blue join sodium hydroxide, and precipitation.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| ISO | 3 | 3 | 5 | 4-5 | 2 | 5 | 3-4 | 2 |
| AATCC | 3 | 2-3 | 2-3 | 1-2 | 1 | 1 | 4 | 4 |
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