Other Name:
Fluorescent Brightener FNW,Fluorescent Brightening Agent FNW, Optical Brightening Agent FNW,Fluorescent Whitening Agent FNW,OBA FNW
Properties:
Resistance to chlorine-bleaching and oxygen-bleaching:extremely strong resistance to chlorine-and oxygen-bleaching,and having very good whitening effect even if under strong acidic or alkalic conditions.
Applications and Dosage
Mainly used for whitening of cotton and nylon fabric with padding process.
Dosage: 0.4-0.5% o.w.f
- 1. For nylon and cotton
After reduction bleach process with nylon/cotton blends whitening.
Dosage: NFW 0.1-0.5% o.w.f sodium sulfate: 2-5g/L
Liquor rate: 1:10-20 Temperature*time: 80-100℃*30-60mins - 2. For wool and silk
After peroxide and reduction bleach process with wool and silk whitening.
Dosage: NFW 0.1-0.3% o.w.f pH= 4-6 (acetic acid adjustment)
Liquor rate: 1:10-20 Temperature*time: 60-100℃*20-60mins.
Technical Specifications
- C.I. No.: Fluorescent brightener FNW
Physical Form: light yellow transparent clear liquid.
Structure:a compound of diphenylethylene xenene type.
Solubility:soluble in water,alcohol,ether,DMF,etc.
Fluorescence tone:slight greenish blue.
Package and storage
- 25kg per drum or carton box or as per clients request.
- Be stable for 5 years when properly stored in closed container at 20℃.
