High Fastness Vat Dye Vat Blue 5 (Vat Blue 2b) for Cotton Dye

• CAS No.: 2475-31-2
• Colour: Blue
• Appearance: Powder
• Usage: Paint, Plastic, Leather, Ink, Paper, Textile, Food
• Application Material: Wool
• Name: Vat Blue 5
• Model NO.: Vat Blue 5
• Content: 100%
• C.I.No.: 73065
• Dyeing Depth G/L: 20
• Dyeing Method: in Iw
• Leuco Color: Blue
• Transport Package: Carton
• Specification: 25KG
• Trademark: emperorchem
• Origin: China
• HS Code: 3204159000
• Production Capacity: 80000t/Y

Product Description

High fastness  Vat Blue 5 for Cotton use 
C.I.Vat Blue 5
,C.I.73065
,CAS 2475-31-2,
577.85,
C16H6Br4N2O2
,Bromo Indigo,Indigo Blue 4B,Bromo Indigo 2B

Molecular Formula:C₁₆H₆Br₄N₂O₂

Molecular Weight: 577.85

CAS Registry Number:2475-31-2

Manufacturing Methods : (a) and Acetic anhydride in the presence of Sodium acetate trihydrate in Acetic acid glacial will 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-   tetrabromide (FIAT764); (b) in the boiling Nitrobenzene with Bromine will 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- four bromination, (C) 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- in Chlorosulfonic acid (GP 225227) or in Sulfuryl chloride (GP 229304) and bromine reaction.

Properties and Applications: blue. Dark blue powder. Etanol and insoluble in water, soluble in Xylene, Nitrobenzene and 1, 2, 3, 4 - Tetrahydronaphthalene. Alkaline reduction leuco for yellow; Acid reduction leuco for pale yellow. In concentrated sulfuric acid to blue light green, diluted into blue, and the emergence of precipitation. Used for cotton of jig dyeing and yarn dyeing, dyeing hair blue cloth color turquoise blue. Is the important dye printing, can direct printing, also can discharge printing and resist printing. Can also be used for viscose, silk and wool dyeing, levelness and affinity are good. Can be processed into organic pigment

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	5	2	4-5	4	3-4	4-5	5
AATCC	5	2	4-5	3-4	4

FACTORY PHOTOS:






Customers' Feedback for Factory wholesales Vat Dyes for Cotton




 

Q1. How can I get the samples for testing?

A:

1. We can provide a certain quantity of free samples. Please give the specific CAS or CI NO. of the product and we will give you the sample based on our standard.
2. You can send your samples to our office and we will send back the copy samples for you. It's a more efficient way.

Q2. How can I get the price of needed products?

A:

1. Please give the exactly CAS or CI Number, quantity, packing, destination port or specs requirements. We can according to your exact requirements to give you the price.
2. You can send us a sample, we can according to your sample give you a counter sample and price.

Q3. I don't know whether your product can be available, how can I order this from you?

A:
It's the best way if you can send us a sample, so we can according to your samples give you a counter sample for checking the quality. Also we will quote a price for you to check the cost. After confirming all of this, you can contact our sales for an order.

Q4. I am a small wholesaler, do you accept small order?

A:
It's no problem if you are a small wholesale, we would like to grow up with you together.

Q5. How to use the product?

A:
We are pleased to be requested the application methods from you and we will use words and videos to tell how to use. We also have application engineers can provide onsite service for you customers.

Q6. We want to be your agent of our area, how to apply for this?

A:
Please send your idea and your profile to [email protected]  Att: Gloria xu 

Q7. Can you make OEM service of your products?

A:
Yes. We can accept OEM service. Also we have provided OEM service to lots of big and famous companies in the order.

Q8. How can you ensure the quality to us?

A:

1. Quality is the foundation of our company,we have been engaging in this field for more than 20 years. Superior quality brings us the benefits and gives us the vitality.
2. The bulk production is the same quality as the confirmed sample we provide to you for testing before the order.
3. If you still have doubt, you can request the third part company, such as SGS, to inspect and test the bulk cargo before shipment (you should bear the inspection expense).

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