Zhejiang Shangyu Chemical Co., Ltd

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1. fluorescent brightener ER

Optical Brightener ER
Chemical name: 4,4-bis(2,2-cyano-phenylene)-benzene
Structure:

Formula: C24H16N2

Molecular Weight: 332

C.I. Number: 199

Appearance: greenish yellow crystalline powder

Melting Point: 230-232ºС

Purity:>9 ...

2. fluorescent brightener CXT

Optical Brightener CXT
Main Chemical Composition: stilbene bistriazine derivative

Structure:

Formula: C40H38 N12O8S2Na2

Molecular Weight: 1052

C.I. Number: 71

Appearance: White powder

Strength: 100%

Ionic character: anionic

...

3. fluorescent brightener CBS-X

Optical Brightener CBS-X
Main Chemical Composition: Stilbene derivative

Property: CBS-X is a greenish yellow crystalline powder, soluble in water, anionic type, maximum spectrum absorption at 348- 350nm

C.I. Number: 351

Application: ...

4. fluorescent brightener OB-1

Optical Brightener OB-1
Chemical name: 2,2-(1,2-Ethenediyldi-4, 1-phenylene)bisbenzoxazole
Structure:

Formula:C28H18N2 O2

Molecular Weight: 414.4

C.I. Number: 393

Appearance: greenish yellow powder

Melting Point: 359ºС

Purit ...

5. fluorescent brightener OB

Optical Brightener OB
Chemical name: 2,5-bis(5-tert-butyl benzoxazolyl-2-)thiophene
Structure:

Formula: C26H26N2 O2S

Molecular Weight: 430

C.I. Number: 184

Appearance: slight yellow or milk white powder

Melting Point: 200~202ºС ...