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  • Chemical Name:  Fluorescent Brightener OB-1
  • CAS No.:     1533-45-5
  • Molecular Fomula: :C28H18N2O2
  • Molecular weight:414.45
  • Appearance:Yellow crystalline material
  • Sample:Available


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Mannitol-CAS-87-78-5

Basic Info of OB-C

Basic Info
Numbering system
Properties
Safety Info
Basic Info

Chemical Name 2,2′-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole
Synonyms OpticalBrighteningAgentOB-1C.I.;fluorescentbrightener393;44BIS2BENZOXAZOYLSTILBENE;-stilben.html” >4.4′-Bis-<2-benzoxazolyl>-stilben;4,4′-Bis(2-benzoxazolyl)stilbene;Expand
CAS No. 1533-45-5
Molecular Formula C28H18N2O2
Molecular Weight 414.45500
PSA 52.06000
LogP 7.47340

Numbering system

EINECS number 216-245-3
MDL number MFCD00022846
PubChem number 24862920

Properties

Appearance & Physical State solid
Density 1.39 g/cm3 (25ºC)
Boiling Point 566.8ºC at 760 mmHg
Melting Point 357-359ºC
Flash Point 285.1ºC
Refractive Index 1.731
Stability Stable. Incompatible with strong oxidizing agents.
Storage Condition Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
Vapor Pressure 2.79E-12mmHg at 25°C

Safety Info

Safety Statements S24/25
WGK Germany 1
Risk Statements R36/37/38
Hazard Codes Xi
Symbol GHS07
Caution Statement P261; P305 + P351 + P338
Signal Word Warning
Hazard Declaration H315; H319; H335

What is Fluorescent Brightener OB-1?

  • With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Fluorescent Brightener OB-1   which has developed particularly rapidly in recent years. Do you know about Fluorescent Brightener OB-1?
  • The official answerFluorescent whitening agent OB-1, 2,2-(4,4-styryl)bisbenzoxazole, is a yellow crystalline substance, melting point 359-362℃, insoluble in water, odorless, stable performance maximum absorption spectrum wavelength 374nm, with strong fluorescence, fluorescence emission wavelength 434nm. fluorescent whitening agent OB-1 is an efficient fluorescent whitening agent for polyester fiber and is also widely used in ABS, PS, HIPS, PC, PP, PE, EVA, and hard PVC plastics, with excellent whitening effect, excellent thermal stability, very small additional amount, etc.

What’s the application of Fluorescent Brightener OB-1?

  • It is used for the whitening of polyester original liquid, especially suitable for the whitening of polyester fiber and the whitening of polyester and cotton and another blended textile, and also for the whitening of plastic products Fluorescent whitening agent OB-1 Fluorescent whitening agent OB-1 is a new variety developed abroad, which is suitable for the whitening and brightening of PE, PVC, ABS, PC, and other plastics. It has low dosage, strong adaptability, and good dispersibility. OB-1 can be added in post-processing or polymerization, with high whiteness and excellent heat and weather resistance, OB-1 can also be made into a paste for textile whitening.

Conclusion

Sincere to the customer and in good faith of quality is our forever followed motto. It’s the basement to be a human and do business. We take all responsibility for our products and service sincerely. We are a company integrating R&D, production, and sales. The design, research, and development of pharmaceutical intermediates including more than 330 kinds of pharmaceutical intermediates such as Anti-infectives, Cardiovascular and Cerebrovascular Systems, Digestive System, Santi-tumor, Nervous System, Geriatric Drugs, and Gynecological Drugs. At the same time, we have more than 4,000 factories in strategic cooperation with nearly 50,000 chemical products, so we can provide you with a one-stop purchasing service, which greatly saves customers’ procurement costs and time.

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