Keywords

• 1533-45-5
• OBA OB-1
• OPTICAL BRIGHTENER OB-1

Quick Details

• ProName: high purity OPTICAL BRIGHTENER OB-1 2...
• CasNo: 1533-45-5
• Molecular Formula: C28H18N2O2
• Appearance: yellowish green powder
• Application: C.I.No.: 393 Chemical name: 2.2’-(4.4’...
• DeliveryTime: one week
• PackAge: Packaged in cardboard drums,25kg each
• Port: shanghai , hangzhou etc
• ProductionCapacity: 30 Metric Ton/Month
• Purity: 98.0%（min）
• Storage: Stored in closed containers in dry coo...
• Transportation: by air;by sea; by express；Normal Good
• LimitNum: 25 Kilogram
• Grade: Industrial Grade

Superiority

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 App…

Our Services
1. New Molecules R&D
2. Own test center HPLC NMR GC LC-MS
3. API and Intermediates from China reputed manufacturers
4. Documents support COA MOA MSDS DMF open part

Our advantages
1. Government awarded company. Top 100 enterprises in Hangzhou
2. Quality warrant. If any quality failure. we 100% return the payment or replacement
3.More than 9 years experiences in pharmaceutical and chemical international trading
4.Fast response on customers request and fast shipment

Details

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.