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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:  2946
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Product Name C.I. No. Swatch Product Name C.I. No. Swatch Product Name C.I. No. Swatch
Direct Black EX Direct Black 38 直接黑EX Direct Sky Blue 5B Direct Blue 15 直接湖蓝5B Direct Copper Blue 2B Direct Blue 151 直接铜蓝2R
Direct Yellow G Direct Yellow 12 直接冻黄G Acid Red 3R Acid Red 18 酸性大红3R Direct Red 4BE/Congo Red Direct Red 28 直接大红4BE（刚果红）
Sulphur Black BR Sulphur Black 1 硫化黑BR Acid Black ATT Acid Black ATT 酸性黑 ATT Direct Yellow R Direct Yellow 11 直接黄R（太阳黄）
Acid Orange II Acid Orange 7 酸性橙II Metanil Yellow Acid Yellow 36 酸性金黄G Direct Scarlet 4BS Direct Red 23 直接耐酸大红4BS
Rhodamine B Basic Violet 10 碱性玫瑰精 Auramine O Basic yellow 2 碱性嫩黄O      

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Recommended products: Direct Black EX( Direct Black 38),  Direct Sky Blue 5B( Direct Blue 15),  Direct Copper Blue 2B( Direct Blue 151),  Direct Yellow G( Direct Yellow 12),  Acid Red 3R( Acid Red 18),  Acid Red 18( Congo Red,  Direct Red 28),  Sulphur Black BR( Sulphur Black 1),  Acid Black ATT,  Direct Yellow R( Direct Yellow 11),  Acid Orange II( Acid Orange 7),  Metanil Yellow( Acid Yellow 36),  Direct Scarlet 4BS( Direct Red 23),  Rhodamine B( Basic Violet 10),  Auramine O( Basic yellow 2)