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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
|
Greenish yellow powder
|
| Ionic nature | Anionic
|
| pH of 1% solution | 10 +/- 1
|
| Miscibility | Miscible with water
|
| Stability | Stable to dilute acids and dilute alkalies
|
| Compatibility | Compatible with anionic and nonionic products
|
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.
| Peroxide bleach
|
Stable
|
| Reduction bleach (hydrosulphite 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 20% 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
Diluted solution is stable for about 3 months.
It is advisable to utilize the diluted product within 2 months. Stir well before use.
Precautions
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
