UMATON 4BB-Powder
Fluorescent Whitening Agent (FWA)
Fluorescent Whitening Agent for detergent. Broad spectrum of application, good general properties, largely unaffected by pH.
Specifications
- Appearance
- Yellowish fine granules or powder
- Character
- Anionic
- Absorption Maximum
- 349 ± 1 nm
- Fluorescence Maximum On Cellulose
- 440 ± 1 nm
- Extinction coefficient E 1%/1cm
- 350 ± 10
- Colour Index No
- 252
- Derivative
- Bis(Triazinylamino)–Stilbene Disulphonic Acid
- Shade
- Violet-Blue
- Fastness
Dry Light 3–4 Wet Light 4–5 - Stability
- Stable to alkali, perborates, hydrogen peroxide and Tetra Acetyl Ethylenediamine (TAED) under conditions usually found in household and commercial laundering. Excellent fastness to chlorine bleach used as an after-rinse.
Application
Excellent whitening on cellulosic fibre at cold-to-hot wash conditions, 20 °C and above.
Good fastness to chlorine bleaching when already present on the fibre. Small brightness reduction occurs in sodium hypochlorite solution (~500 ppm available chlorine); noticeable reduction at higher chlorine concentrations but no degradation products. Not recommended where free chlorine is present in solution (standard recommendation for all stilbene-triazine whiteners).
Suitable for all normal manufacturing methods (spray drying, spray blending, dry mixing). Method does not affect performance.
0.2% to 0.4%, depending on user requirements and local washing conditions.
Dilute solutions must not be exposed to natural light.