SARAWHITE-PC

SARAWHITE-PC | Medium to high affinity, Redder tone

Product Information

Sarawhite-PC is a fluorescent whitening agent which imparts reddish tone on polyamide, wool, silk and their blends. It can be applied by exhaust and continuous processes. It is appropriate for reductive discontinuous bleaching. It is suitable for incorporation in print paste for white discharges.

Key Features & Benefits
Key Features
Benefits
Medium to high
Appropriate for exhaust process with excellent wash fastness
Very high bath exhaustion
Low waste water pollution
Excellent build-up
Very high and brilliant white
Good stability to alkali, peroxide and electrolyte
For discontinuous bleaching with hydrogen peroxide
Very good stability reducing agents
For reductive discontinuous to bleaching
Suitable for incorporation in print pastes for white discharges
General Characteristics
Physical appearance
Dark yellow liquid
Ionic nature Anionic
pH of 1% solution
8 +/- 1
Miscibility Miscible with water
Compatibility
Compatible with anionic and nonionic products
Stability
Stable to dilute acids and unstable to dilute alkalies
Application

1. Exhaust Process :

  • Dosage : 1.8-2.2%
  • Bath pH : 4.5-5.0
  • Bath Temp. : 100-110 deg.C
  • Time : 30 mins.

Sarawhite-PC is suitable from neutral and slightly alkaline baths without or particulary for regenerated cellulosing fibres with addition of electrolyte, preferably in combination with the reduction or alkaline peroxide bleach. It is not suitale in pack systems without forced liquor flow.

2. Continuous Process :

  • Dosage : 18-22 g/l
  • Pick-up : 4.5-5.0
  • Bath pH : 65-70%
  • Drying : 130 deg.C

Sarawhite-PC is suitable for Peroxide continuous bleach and wash-whitening process.

STABILITY & FASTNESS PROPERTIES :

Stability to
Remarks
Reduction bleach (hydro sulphite based)
Stable
Chlorite bleach
Unstable
Hard water
Stable
pH
 > 5
Fastness properties
Methods
Change in degree of whiteness
Light fastness
ISO 105-BO2
3(PA), 2(W/S)
Wash fastness, 60 deg.C
ISO 105-C06 C1
4(PA), 5(W/S)
Dry heat fixation, 180 deg.C
ISO 105-P01
5 (PA)
Perspiration, acidic
ISO 105-E04
4-5(PA),4-5(W/S)
Perspiration, alkaline
ISO 105-E04
4-5(PA),4-5(W/S)
Dry cleaning
 --  5
Chlorite bleach
 --  1

Note :

PA: Polyamide, W/S : wool/silk

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

Related Products

Product Name Short Description Description
CAREWHITE-PAS OBA with Violet tone

An optical brightening agent with Violet tone for Polyamide, Wool, Silk, Cellulosic fibres and their blends

SARAWHITE-CLE OBA with Violet tone

A high light fastness (grade 5) optical brightening agent for Polyamides.