Description
Optical brightener NFW
CAS: 27344-41-8
C.I. NO: 351
Appearance: yellow-green powder
Ionicity: Anion
Main ingredient: stilbene derivatives
Shade: slightly violet shade
Counter quality: Uvitex NFW ( Huntsman)
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.
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℃
