Crude Powder Direct Sky Blue 5b Direct Blue 15 for Textile Use

Product Description

Product Description

Product Name: Direct Blue 15
C.I. No.:24400
CAS No.: 2429-74-5   
Molecular Formula: C28H31N6Na4O16S4  
Molecular Weight: 992.81
Relative Name:
ACDI Sky 5B; Apollo Direct Sky Blue 5B; Atul Direct Sky Blue; Bitamine Direct Sky Blue FB; Blue 5BN; Concorde Direct Sky Blue 5B ; Condirec Blue AE; Direct Blue FFN; Direct Blue for paper; Direct Fast Blue 5B; Direct Pure Blue; Direct Sky Blue 5B; Direct Sky Blue FF;  Enianil Brilliant Blue AN; Kayafect BlueC ; Levacell Blue S; Rifa Leather Blue SB; Simrect Sky Blue 24943; Tertrodirect Blue FF; Vicorect Sky Blue FF; Vopsider Blue DFFN
Shade: blue powder, soluble in water solution for the red light blue.

Direct Blue 15 Dyeing Fastness(grade)
 

sun exposure	standard depth	-
	1/12 depth	-
soaping	original color change	2
	white fiber stained	1~2
flooding	original color change	3
	white fiber stained	2
perspiration	original color change	3~4
	white fiber stained	2
rubbing	wet	3
	dry	4~5
ironing		4~5
acid and alkali	sulfuric acid	4
	acetic acid	2
	soda ash	4

Direct Blue 15 Properties and Applications:
Direct Lake Blue 5B Appearance is generally blue uniform powder. Good water solubility, soluble in water, reddish blue, insoluble in organic solvents. It is blue-green in concentrated sulfuric acid, reddish blue after dilution; in concentrated nitr-ic acid It is reddish gray. Its aqueous solution is concentrated with hyd-rochloric acid and has a red-blue precipitate. Concentrated so-dium hydr-oxide has a purple precipitate. In case of copper ion, the color becomes dark.
Application:
1. Direct Lake Blue 5B has been used to dye cotton or viscose fiber to get bright green blue, such as diazotization after dyeing, coloring with phenylmethylpyridone, which gives blue-green color. The dyeing rate is very good, shifting Dyeing and leveling are poor, it is advisable to add salt to control the dyeing to obtain uniform color. After dyeing, the dyeing solution should be naturally cooled to 60~80 °C, which is good for dye exhaustion.
2. Direct Lake Blue 5B has been used to dye rich fiber, the dyeing rate is very good, but the color light is slightly darker than cotton. When dyeing vinyl fabric, the dyeing rate is poor, the color light is slightly bluer than the viscose fiber. Cotton, viscose fiber and When the other fibers are dyed in the same bath, the wool and nylon are gray, the silk is very light, the polyester and acrylic fibers are light yellowish gray, and the second vinegar fiber is not stained. When used for cold dyeing, the silk and wool are basically not stained.
3. Direct Lake Blue 5B has also been used for direct printing of cotton or viscose fabrics. When printing dark patterns, it can be used to dissolve dyes in urea. When dyeing for ground color, the dyeing performance is good. After coloring, it was whitened with a stannous chloride reducing agent, and the whitening effect was good.
4. Direct Lake Blue 5B was once one of the main blue direct dyes. It is mainly used for dyeing and printing of viscose fabrics, cotton knits and fabrics such as flannel and velvet. It is also used in viscose fiber. Dyeing with nylon blend fabric.
 

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FAQ

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. 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.

Q7. 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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