Keywords

• FLUORESCENT BRIGHTENER 393
• OPTICAL BRIGHTENER OB-1
• Fluorescent Brightener OB-1

Quick Details

• ProName: OPTICAL BRIGHTENER OB-1 C.I.393
• CasNo: 1533-45-5
• Appearance: yellowish green powder
• Application: Outstanding whitener of polyester and ...
• DeliveryTime: one week
• PackAge: 25kg/drum
• Port: any in china
• ProductionCapacity: Metric Ton/Day
• Purity: 98%
• Storage: 2 years
• Transportation: by air, by sea
• LimitNum: 0 Metric Ton

Superiority

Details

Appearance: yellowish green powder
Melting Point: 350~360°C
Purity:≥98.0%

C.I.No.: 393 Chemical name: 2.2’-(4.4’-diphenol vinyl) dibenzoxazol CAS NO: 1533-45-5 Formula: C28H18N2O2 Melting Point: 357~359°C Application: mainly be used in whitening of polyester and plastic, as well in whitening of PET, Nylon during polymerization.

Company Introduction

1. Established in 2005, with two independent business divisions: Fine chemicals division;  Pharmaceutical division.

a. "Top 100 innovation-oriented export enterprises Of Hangzhou" honored by Hangzhou government   

b. Specialized in the fine chemicals and pharmaceuticals

c. A leading manufacturer and trader of APIs in China

2. Main product:

• Optical brightener
•  
• Textile auxiliary
•  
• Dye stuff
•  
• Pigments
•  
• Pharmaceutical active ingredients
•  
• Pharmaceutical intermediates
•  
• Feed additives

3. Company Picture

Product Description

Identification of 1533-45-5

Name:

Benzoxazole,2,2'-(1,2-ethenediyldi-4,1-phenylene)bis-

 

EINECS:

216-245-3

Molecular Formula:

C₂₈H₁₈N₂O₂

CAS Registry Number:

1533-45-5

Synonyms:

Benzoxazole,2,2'-(vinylenedi-p-phenylene)bis- (7CI,8CI); 2,2'-(Vinylenedi-p-phenylene)bisbenzoxazole; 4,4'-Di(benzoxazol-2-yl)stilbene; C.I. 40674; Eastobrite OB 1; Fluorescent Brightener 393; OpticalBrightener 1; Uvitex OB-ONE;

InChI:

InChI=1/C28H18N2O2/c1-3-7-25-23(5-1)29-27(31-25)21-15-11-19(12-16-21)9-10-20-13-17-22(18-14-20)28-30-24-6-2-4-8-26(24)32-28/h1-18H/b10-9+

Molecular Structure:

 

Chemical Properties

Appearance:

solid

Molecular Weight:

414.46

Density:

1.39 g/cm3 (25 C)

Boiling Point:

566.8 °C at 760 mmHg

Melting Point:

357-359℃

Flash Point:

285.1 °C

Storage Temperature:

Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

Refractive index:

1.731

Solubility:

Insoluble

Stability:

Stable. Incompatible with strong oxidizing agents.