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C24H16N2 Plastic Brightener KB199 Crystalline Powder 332 Molecular Weight

City: Linfen
Province/State: Shanxi
Country/Region: China
Tel: 86-357-2228987
Contact Person:
Ms Sunny

C24H16N2 Plastic Brightener KB199 Crystalline Powder 332 Molecular Weight

Brand Name : Colorshine
Model Number : ER series
Certification : SGS
Place of Origin : Shanxi China
MOQ : Negotiation
Price : Negotiation
Payment Terms : T/T,LC,CAD,DP
Supply Ability : 100 MT monthly
Delivery Time : 10 days
Packaging Details : 25 KG per Fiber Drum
Classification : Chemical Auxiliary Agent
HS CODE : 32042000
EINECS No. : 235-835-1
Other name : ER-I
Application : Plastics and textiles
Apprearance : Greenish yellow powder
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C24H16N2 Plastic Brightener KB199 Crystalline Powder 332 Molecular Weight

1. General Information of Optical Brightening Agent KB199


Product NameOptical Brightener ER (C. I. 199)
Chemical Name1,4'-bis(2-cyanostyryl) Benzene
CAS No.13001-39-3
C.I. No.199
EINECS No.235-835-1
Molecular FormulaC24H16N2
Molecular Weight332
Technical IndexAppearance:greenish yellow crystalline powder
Melting Point:230-232°C
Maximum UV Spectrum Absorption:365nm


ER Series is being widely used at home and abroad for whitening plastic chemical fiber, especially in printing and dyeing industry. It has become a quality and high-efficient type of fluorescent whitening agent for polyster. The cyano group contained in the product structure is capable of cosisting 6 different isomers at different ortho-position, and meta-position. Meanwhile the isomers are muturally compounded or compounded with fluorescent whitening agents of other structures which will generate several dozens of high-quality compound type whitening products.

ER Series fluorescent whitening agent powder is the typical representative of toluylene-type whitening agent, and its six isomers are shown.

2. Application and procedure of Optical Brightening Agent KB 199

It is mainly used for whitening and brightening polyster fiber, especially polyster staple fiber and polyster fabric. At the same time, it is especially suitable for whitening various kinds of plastic products, cellulose acetate fiber, polypropylene fiber etc.


Before drawing fiber, remove the sundries in polyster chips( or plastic substrates); weigh the materials and add them to the melting tank. Raise the temperature to 120-130°C; Vacuumize the tank to remove the moisture contained in materials; Stop vacuumizing add KB-199 whitening powder to the chips according to 150-300g/tons; fully mixt them, so that the dry powder could be uniformly absorbed on the surface of materials.

When making whitening master batch chips or bubble materials,you may use KB-199 whitening powder which has good effect. The general quantity is 1-10%. It is better to control the temperature at 240-280°C and its better to short the time, the time shall not be less than 30s.

4. Packing and Shipping

It is packed in 25 kg fiber drum.

We have rich experiences in exporting and importing. We have good cooperation with world wide Express like DHL, UPS etc and also shipping line to ensure the samples and goods can be reach to the cutomers at soonest speed.

5. Quality Contral and R&D

We have more than 15 years of production and we also have experienced technical person to do testing and gurantee the quality during the whole production line.In past few years our team strive to develop new products which are enviromental friendly and energy

saving. We believe with our fulfillment to be the best enterprise for our customers. Under their efforts the Optical brightening agent has achieved national advanced level.

6. Production line

Shanxi Colorshine Chemical Industry Co.,ltd is an ISO-certified modernized chemical enterprise in the collection of R&D, production and sales. Our company concentrates on the production, sales and service for Optical brighteners,Dyes and Carbon Black, fine chemicals and intermediates, which are widely used in detergent,paper-making, textile, rubber industry, medical industry, paints, printing inks and etc.

Our company's headquarters is based in Linfen City, Shanxi Province. We are establishing technical cooperation with Linfen Tech University, and manufacture products according to different customers’ requirements to fulfill market’s demand.

Except professional R&D team, our factory has advanced production and testing equipments for testing, mixing and post-processing the products in order to ensure the high quality.

With profound chemistry knowledge and rich experience, our business team can offer professional technical supports according to customers’ demand.Till now our products are exported to Japan and South Korea, Southeast Asia, the Middle East, Central and South America, Africa and successfully into Germany, France, the United States and other European markets.

Product Tags:

optical brighteners chemistry


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