OBA with Neutral Tone
Sarawhite-(Conc).is a high affinity optical brightener for cellulosic fibres and their blends. It can also be applied for wool, silk and nylon. Due to it's high affinity, Sarawhite-(Conc).is recommended by exhaust application only. Sarawhite-(Conc). is stable to peroxide as well as reductive bleach liquors hence, combined bleaching and optical brightening can be carried out.
| Key Features | Benefits |
|---|---|
| Neutral white
|
Required tone easily adjusted
|
| Concentrated form
|
Lower dosage required and economical
|
| High affinity
|
Excellent exhaustion
|
| Good stability to peroxide and reducing agent
|
Combined bleaching and optical brightening possible
|
| Physical appearance
|
Light yellow to greenish yellow powder/granules
|
| Ionic nature
|
Anionic
|
| pH of 1% solution | 10 +/- 1
|
| Miscibility | Soluble in water
|
| Compatibility
|
Compatible with anionic and nonionic products
|
| Stability | Unstable to dilute acids and stable to dilute alkalies
|
Exhaust process
Cotton :
Viscose & Modal:
Wool, Silk & Nylon
* Dosages recommended are based on the concentrated product's strength.
Dosages of diluted product to be calculated on the basis of solid content.
| Stability to:
|
Remarks
|
| Peroxide bleach
|
Stable
|
| Reduction bleach (hydro sulphite based)
|
Stable
|
| Chlorite bleach
|
Unstable
|
| Chlorine bleach
|
Unstable
|
| Hard water, ppm (Ca)
|
142 |
| pH
|
7-12
|
| Fastness properties
|
Methods
|
Change in degree of whiteness
|
| Light-fastness
|
ISO 105-B02
|
3 - 4
|
| Wash fastness,60 deg.C
|
ISO 105-C06 C1
|
5 |
| Wash fastness,90 deg.C
|
ISO 105-C06 E1
|
5 |
| Dry heat fixation,180 deg.C
|
ISO 105-P01
|
5 |
| Dry heat fixation,210 deg.C
|
ISO 105-P01
|
- |
| Perspiration, acidic
|
ISO 105-E04
|
5
|
| Perspiration, alkaline
|
ISO 105-E04
|
5 |
| Dry cleaning
|
---
|
5
|
| Chlorine bleach
|
---
|
4 |
| Chlorite bleach
|
---
|
1 |
Instructions For Dilution
Procedure to prepare 10% diluted product of 100% Sarawhite (Conc).
Preservation: It is recommended to add 0.1% Bronopol (2-Bromo, 2-nitropropane, 1,3-diol) or Methyl Paraben (methyl para hydroxy benzoate) as an antimicrobial agent to avoid fungal / microbial growth.
pH of diluted solution should be between 9-10 and if not, adjust with caustic.
Un-dissolved particles if any can be filtered off
It is advisable to utilize the diluted product within seven days.
Stir well before use.
Storage : Store in cool, ventilated shed away from heat and direct sunlight. Storage temperature should not exceed 35 deg C.Close lids firmly to avoid contact with air and moisture.
Shelf Life : 9 months from the date of manufacturing, if stored under controlled conditions.
The above information is given in good faith and is without warranty
