China Textile Chemical Auxiliary Optical Brightener 4bk Agent for Cotton, Find details about China Brightener 4bk, Optical Brightener 4bk Agent from Textile Chemical Auxiliary Optical Brightener 4bk Agent for Cotton
1. Pale green powder, tasteless, dissolvable in paraffin, fat, olefin and most organic solvents. Its spectrum can absorb the maximum wavelength of 375nm with the maximum transmitted length of 435nm(in ethanol).
2. Good brightening effects and weathering resistance requires a small quantity but can be widely used.
Optical Brightener 4BK | C.I.28/113 | CAS NO:12768-92-2 |
Molecular Formula: C40H42N12O10S2Na2 | Solublility:soluble in water | |
Appearance:reddish purple, yellow powder | Ionicity:anionic | |
Fluorescent colors:red light/blue light | Moisture:≤0.5% | |
Content of water-insoluble impurities:≤0.5% | ||
Fineness (residual content passed through 180μm-pore sieve ): ≤5% | ||
Application | Fluorescent Brightener 4BK can be used for whitening of cotton, hemp and cellulose fiber fabrics, and brightening of light-colored fiber fabrics. | |
Property | 1.The product is readily soluble in water, acid-resistant, alkali-resistant, and has much better whitening effect than VBL at pH 4.5-7. 2.Belonging to anionic type, it can be used in the one bath with anionic or nonionic surfactant. |
Q1: Are you a manufacturer or trading company?
Re: We are one company integrated industry and trade. No matter the products we manufacture or trade, high quality products and competitive price always will be provided for you.
Q2: May I get one sample before placing order?
Re: Yes, we'd like to provide sample for you. For those normal products, you just need to bear the freight; for those high value products, you just need to freight and a little product cost. When we both cooperate for some times or when you are our VIP customer, free sample will be offered when you need.
Q3: Which payment is available for your company?
Re: In order to prompt our cooperation, there are some payment methods for your choice. T/T(USD), Western union, Paypal, Credit card, Alipay or Alibaba trade insurance all is ok. You can choose the one which is convenient for you.
Q4: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, T/T, EMS, etc.) or by air. Usually it will cost 2-5 days that you can get the goods after delivery.
For large quantity products, shipment is better. It will cost days to weeks to come to your destination port, which depends on where the port is.
Q5: Is there any possible to use my appointed label or package?
Re: Sure. If needed, we'd like to use label or package according to your requirement.
Q6: How can you guarantee the goods you offer is qualified?
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide for you all are high qualified. If the goods can't come to the quality we promise, you can ask for refund.