501 Waterford, C Wing, C.D.Barfiwala Marg,

Juhu Lane, Andheri W, Mumbai 400 058, INDIA.

Phone: +91 22 42184218 • Fax: +91 22 42184350

Email: sales@sarex.com • Web: www.sarex.com


CAREWHITE-PAS | Optical Brightening Agent

Product Information

Carewhite-PAS is an optical brightening agent for polyamide, wool, silk, cellulosic fibres and their blends. It can be applied by exhaust as well as by continuous process. Fabric treated with Carewhite-PAS offers violetish white shade on the treated substrate. Carewhite-PAS shows good stability to wide range of pH. Carewhite-PAS shows good light fastness.

Key Features & Benefits

Key Features Benefits
Violetish white shade : Brilliant whites can be obtained
Stable at wide range of pH : Stable to reductive bleach

General Characteristics

Physical appearance : Lemon yellow to yellow liquid
Ionic nature : Anionic
pH of 1% solution : 9.5 +/- 1
Miscibility : Miscible with water
Stability : Stable to dilute acids and dilute alkalies
Compatibility : Compatible with anionic and nonionic products


Padding process
Dosage : 10-20 g/l
Pick-up : 65-70%
Bath pH : 4.0-5.0
Drying : 120-160 deg.C

Exhaust process
Dosage : 1-2%
Bath pH : 4.0-5.0
Bath Temp : 95-100 deg.C
Time : 30-40 mins

Stability to: Remarks
Peroxide bleach : Stable
Reduction bleach (hydro sulphite based) : Stable
Chlorite bleach : Not stable
Hard water, ppm (Ca) : Not stable
pH : 2-12
Compatibility with softeners : Compatible

Fastness properties Methods Rating
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 3
Dry heat fixation, 180 deg.C ISO 105-P01 5
Dry heat fixation, 210 deg.C ISO 105-P01 5
Perspiration, acidic ISO 105-E04 5
Perspiration, alkaline ISO 105-E04 5
Dry cleaning (perchloroethylene) ISO 105-D01 4-5
Chlorine bleach --- 4-5
Chlorite bleach --- 1
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 8 months from the date of manufacturing, if stored under controlled conditions