Model NO.: 28160
C.I.No.: Direct Red 4b
Molecular Formula: C29h19n5na2o8s2
Molecular Weight: 675.6
CAS No.: 2610-11-9/12237-71-7
Related Name: Direct Red 4b
Insolubles: 0.15
Light Fastness: 4
Washing Fatness: 4
Rubbing Fastness: 4-5
Trademark: emperor
Transport Package: Bag
Origin: China
HS Code: 3204140000
Product Name: Direct Red 81
C.I. No.: 28160
CAS No.: 2610-11-9/12237-71-7
Molecular Formula: C29H19N5Na2O8S2
Molecular Weight: 675.6
Relative Name:
Direct Red 4B,Direct Fast Red 4B,Direct Fast Red 8B,Duasyn Direct Red 8B,Pergasol Red 2B.
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Shade:Â red powder
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Direct Red 81 Physical Properties and light fastness, solubility.
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Direct Red 81 | |
| Dyeing depth % | 2 |
| Insolubles % | 0.15 |
| Light Fastness | 4 |
| Washing Fatness | 4 |
| Rubbing fastness(dry) | 4-5 |
| Rubbing fastness(wet) | 3 |
Direct Red 81 Properties and Applications:
Soluble in water for product red, soluble in soluble fiber element, slightly soluble in alcohol, insoluble in other organic solvents. The strong sulfuric acid dyes for dark blue, shalloworange brown after diluted precipitation; In nitric acid solution for colourful blue, to red light brown. The dye solution to join strong hydrochloric acid foryellow olive brown precipitation; Add thick sodium hydroxide solution has the purple precipitation. 60 ºC in the solubility of 40 g/L, not sensitive to that fights. For colourful red light. Copper ions in dyeing color slightly turn blue, encounter iron ion colored light basic unchanged. For A class SDC classification. To dead cotton cover the gender is poorer. Cotton neutral and alkaline white are level 5, viscose and minus sex of neutral white for 4 ~ 5 levels. Used for dyeing cotton and viscose, also can be used for paper color.
Package, 25KG/DRUM, CARTON BOX, BAG
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Note:Â The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.
EXHIBITIONS PHOTOS:
FACTORY PHOTOS:
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