Product Name: Optical Brightener NFW
Other Name:
Fluorescent Brightener NFW,Fluorescent Brightening Agent NFW, Optical Brightening Agent NFW,Fluorescent Whitening Agent NFW,OBA NFW
Characteristics:
- Low appropriate for cotton. High appropriate for wool and silk;
- Good pH stability of 2-12;
- Good stability to peroxide and reduction bleach.
Application and recommended dosage:
Mainly used for whitening of cotton and nylon fabric with padding process.
Dosage: 0.4-0.5% o.w.f
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
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 351
- Physical Form: light yellow or milk white powder
- Appearance: yellow-green powder
- Ionicity: Anion
- Main ingredient: stilbene derivatives
- Shade: slightly violet shade
- Counter quality: Uvitex NFW ( Huntsman)
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℃.
