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Specification:

Appearance: light blue-grey dispersion liquid
Shade: Blueish
Ionic character: Nonionic
PH value: 5 ~ 7
Particle size (≤2-3um): ≥90%

Formula: C₂₈H₁₈N₂O₂

Appearance: yellowish green powder
Melting Point: 357~359°C
Purity:≥98.0%

Formula: C26H26N2 O2S
Molecular Weight: 430
C.I.Number: 184
Appearance: Slight yellow or milk white powder
Melting Point: 200 ~ 202 ℃
Purity: 98.0%(min)

Ingredients: Distyryl-biphenyl derivative

Apperance：Yellow-greenish granule
Ion： Anionic 
Stable at PH 6-12
strength: 100±1(correspond to the standard sample)

A very high whiteness when major dosage. The shade in fabric is slight reddish.
There is appropriate affinity with cotton or polyamide.
Stabe for reductive or peroxide.

Optical Brightener NFW-L is for cotton fibres, wool & nylon. It's for exhaustion and padding process.Its using temperature is wide, and good stability to acid and alkalis, hard water.Washing fastness is normal and low affinity.

Ingredients：Distyryl-biphenyl derivative
Apperance：Yellow-greenish granule
Ion： Anionic 
Stable at PH 6-12
strength: 100±1(correspond to the standard sample)
A very high whiteness when major dosage. The shade in fabric is slight reddish.
There is appropriate affinity with cotton or polyamide.
Stabe for reductive or peroxide.

Main Chemical Composition: stilbene bistriazine derivative

Specification: Appearance: Slight yellow liquid 
Fluorescent Color: Similar to the standard sample
Ionic character: anionic
Whitening strength:100±3( compared with standard sample)
pH stability: from pH 7.0～9.0

Main Chemical Composition: Coumarin Derivatives 
Specification:  Appearance: Off-white powder 
              Content: ≥99%
              Melting Point: 69.5~71.0℃
              Moisture: ≤0.5%
C.I.Number: 91

Chemical name: benzoxoazol derivative
Specification: Appearance: Greenish yellow powder
Melting process: 300℃
Ash content: ≤0.5% 
Purity: ≥98%
Volatile content: ≤0.5%
Fineness (300 mesh residue): 100% 

Chemical name: 1,4-Bis(2-benzoxazoly)naphtalene
Formula: C24H14N2O2
Molecular Weight: 362
C.I.Number: 367
Appearance: Slight Yellow powder
Melting Point: 210 ~ 212 ℃
Purity: 98.0%(min)

Technical index：

Appearance：Yellow Granule

PH Value（1％solution）：6.0~8.0

Ionic character：Anion

E Value : 400±10

Chemical name: 4,4’-bis[2-(2-methoxyphenyl)ethyl]-1,1’-diphenyl
Formula: C30H26O2
Molecular Weight: 418
C.I.Number: 378
Appearance: Slight Yellow powder
Melting Point: 219 ~ 221 ℃
Purity: 98.0%(min)

Product name:Optical Brightener ERN（135）
Chemical name: Stilbene derivative
C.I.Number: 135
Appearance: Slight Yellow liquid
Color light: Similar to the standard sample
Active content: 25%

Product name: Optical Brightener ER-II
Chemical name: 1.4-Bis-p-cyanostyryl-benzene
Formula: C24H16N2
Appearance: Yellow powder
Melting Point: 289 ~ 291 ℃
Purity: 99.0%(min)

C.I.Number: 199:1
Chemical name: 4,4’-bis(2,4-cyano-phenlene)-benzene
Formula: C24H16N2
Appearance: Slight yellow powder
Melting point: 188 ~ 192℃
Purity: ≥99.0%