Optical brightener OB

Code:

Molecular formula:

C26H26N2O2S

Molecular weight:

430.56

Molecular Structure:

CAS#:

52232-33-4

EINECS#:

Specifications:

1.Chemical name:2,5-bis(5-tertbutyl-2-benzoxazolyl)thiophene
Molecular formula: C26H26N2O2S (As International relative Atom Mass 1997)
Molecular weight: 430.2
C.I.184

2.Specifications

Item	Indices
Appearance	light yellow or milk white powder
Purity	≥ 99.8 %
Melting point	201-202
Ash	≤ 0.1
Volatile content	≤ 0.4%

3. performance Features

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

4.Scope of Application

OB is widely used in the brightening of thermoplastics as PVC, PE, PP, PS, ABS,

PMMA, POM and thermosetting plastic, polyester fiber, paint, ink and coating.

5.Aplication Methods

Polyvinyl chloride brightening: 0.01��0.05%
increase radiance: 0.0001��0.001%
Polystyrene 0.0001��0.05%
ABS: 0.01��0.05%
Polyolefin colorless matrix: 0.0005��0.001%
white matrix: 0.005��0.05%

6.Packing Storage

Packed in 25kg×1 tanks, 5kg×2 paper boxes or 1kg(iron cases)×12 paper boxes

at cool and dry places to be protected from light.

Company Information

Tianjin Chengmai Import and Export Trading Co, Ltd is located in Tianjin city, China, near to Xin port. The main products include electrolytic copper, copper wire, copper rod, aluminum ingot, aluminum alloy bar, aluminum alloy ingot, lead ingot, tin ingot, zinc ingot, zinc alloy and rubber products. After years of research on the global market, we have established stable cooperation relationship with a lot of countries. Tianjin Chengmai owns workshops with annual production capacity of more than 100000 tons, the products have obtained ISO9002 quality system certification and CCC certification. The professional working team always provide customers excellent service.

FAQ

Q: Can I get product's sample before I sign the contract?
A: For samples, 0.5 KG is available for quality check and market test, delivery time within 3 working days.

Q:What is your terms of delivery?
A:We accept FOB, CFR, CIF, etc. You can choose the most convenient way for you.

Q: What about your payment term?
A: Usually T/T 30% deposit and 70% against copy of bl or T/T 40% deposit and 60% L/C.

Q: What about your delivery date in normal conditions?
A: We send the cargo within 5 working days after receiving deposit, and usually within 50 days arrives to your appointment port.

Q: what is your ability?
A: For waste copper wire, annual output is 30000 tons. The annual output of aluminum ingot is 80000 tons. The annual output of zinc ingot is about 50000 tons.

Q: how is your product packaging?
A: usually according to the customer's requirements. Commonly used packaging information: small bundle, large bulk packaging, some sizes with plastic cover to protect both ends, seaworthy packaging.

Q: what are your main markets and customers?
A: we are an export company specializing in production and processing, capable of production and international trade. For all
customers who are looking for high quality products all over the world.

Q: if there is a quality problem with the product, what will you do?
A: we will be responsible for all quality problems to the end.

Q: how can I get an accurate price / quotation from you?
A: please tell us your product demand and the product you are looking for. We will send you the the most cheap quotation as soon as possible.