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Product Name: Direct Red 4BE / Congo Red

Product Details:

Product Name: Direct Red 4BE / Congo Red
C.I. No.: Direct Red 28
CAS NO: 573-58-0
Chemical Formula: C32H22N6Na2O6S2
Molecular Weight: 696.6632
H.S Code: 32041400
Testing report:

Testing Items	Standard Indicator	Testing Result
Apprearance	Red Powde	Red Powde
Color Shade :	Similar to standard	Similar to standard
Content (%):	100±3	100%
Moisture (%):	≤5.0	2.75
Insolubles (%):	≤1.0	0.45
Conclusion:	Qualified

Application:
1. mainly used for cotton,viscose and other cellulose fabric dyeing,with excellent dye-uptake,but migration property is not so good;
2. not used for direct printing,but can be used for discharge printing as ground color.
3. not only used for natural silk, wool and paper coloring,but also used as acid-base indicator.

Cick: 521

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