Acid Red 40
Name:C.I.Acid Red 40,C.I.18070
Molecular Structure: Single azo class
C.I.Acid Red 40,C.I.18070,CAS 12167-45-2,537.48,C20H17N3Na2O8S2,Calocid Ceresine
Molecular Formula:C20H17N3Na2O8S2
Molecular Weight: 537.48
CAS Registry Number:12167-45-2
Manufacturing Methods : mix 2,4-Dimethylbenzenamine diazo, and 4-Acetamido-5-hydroxynaphthalene-2,7-disulfonic acid coupling.
Properties and Applications: blue-ray red. Soluble in water is red. The strong sulfuric acid for blue-ray red, diluted for pink; In nitric acid for pink; In 10% of sodium hydroxide solution for yellow.
| Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater | |||
| Fading | Stain | Fading | Stain | Fading | Stain | |||
| AATCC | 5 | 2 | 2-3 | 1 | 2-3 | |||
List of Suppliers:
Calocid Ceresine ( Columbian Chemicals UK )