Audited Supplier
Factory Supply Lowest Price VAT Indigo Blue Dyes 94%min
Another name: reducing indigo
Index no. of dyes: C. I. Reducing blue 1 (73000)
Corresponding foreign trade name: INDIGO (Acna, Fran, ICI)
Molecular formula: C16H10N2O2
Molecular weight: 262.27
EINECS: 207-586-9
Chemical name: 3,3 - dioxbisindophenol
Property and usage:
The granular indigo is processed by spray drying the slurry of acid washing indigo with additive, it has advantages of:
1. Free of dust or little flying dust. The granules have certain mechanical strength, and don't create dust easily, so it can improve the working environment and sanitary condition;
2. Good flowability, which is beneficial to the automatic measuring and operation;
3. Good wettability and dispersibility, don't agglomerate or aggregate in use, and is convenient for preparing dye liquor.
4. Good storage stability, and don't absorb moisture easily, and has not electrostatic adsorption phenomenon.
It can also ensure the homogenic color and brilliant color light in printing and dyeing.
Indigo Specification:
Products name | Indigo(C.I Vat Blue 1#) |
constitutional formula |
|
molecular formula | C16H10N2O2 |
molecular weight | 262 |
nature | This product is dark-blue uniform powdery or granular. It cannot be dissolved in water and common organic solvents such as ethanol and aether, but can be dissolved in hot aniline and melt phthalic anhydride. Its melting point in the closed capillary is 390-392°C, and it begins sublimating slowly at 290°C. It has very good sunburn endurance and application performance. |
test condition | HG/T 2750-1996 |
appearance | dark-blue uniform powder or granule |
(1)original powder | |
content | %≥94.0 |
particbe size(60mesh) | %≥96.0 |
moisture | %≤1.0 |
Fe3+ | <200PPM |
(2) pelleting | |
content | %≥94.0 |
moisture | %≤1.0 |
Fe3+ | <200PPM |
(3)Promoter | |
content | %≥93.0 |
moisture | %≤0.8 |
Fe3+ | <200PPM |
use | Reducing indigo to be dyestuff, which can be mainly used in dyeing cotton fabric, and otherwise can be made to 5.5'-7.7'- tetrabromo indigo, and then be used in biochemical and indicators, etc. |
2.We are making the following items also:
Properties:
Soluble in water red, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. Strong sulfuric acid in purple, will the red orange is diluted; Nitric acid solution inyellow. Its water solution and strong hydrochloric acid red, add sodium hydroxide isbrown.
Applications:
Mainly used for wool, silk, polyamide fiber and its blended fabric dyeing, also can be used for leather, paper, plastic, wood, medicine and cosmetics of dyeing, still can make the ink.
Note: 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.
2. What is the MOQ?
The minimum order quantity depends on the product range. For most items it is 25 KG, if you want smaller order, you have to pay extra USD1.00 per kg for 10kg packing.
3. Can you provide samples?
Yes. We can provide samples depend on your detailed requirements.
4. What's the delivery period for one order?
If we have products in stock, it takes less than 2 weeks. But if we do not have sufficient quantities in stock, it takes 4 weeks.
5.How to place an order or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by L/C, T/T, D/P,Western Union or Paypal.
6.How to contact us ?
A:Contact us by Made-In-China page,email,skype or whatsapp. Any way you like! We will try our best to response ASAP!
