|
Tinted Fluorescent Whitening agent for
Cellulose and regenerated Celluiosic fibre.
Varahi HI is a tinted medium to high substantive optical
whitening agent, generally applicable for self dyeing or tapping
purposes along with non tinted products like Varahi Si and Varahi 28 to
get a pinkish white tone.
Characteristics
- Medium to high affinity
- Tinted product
- Good stability to hard water and alkali
Benefits
- Versatility in application.
- Suitable for exhaust as well as in padding
application.
- Gives excellent pinkish white shades effect.
- Trouble free application.
Properties
Chemistry
|
Stilbene
Disulphonic acid derivative
|
Ionic
Nature
|
Anionic
|
Appearance
|
Light
green fine powder
|
pH
of 1% Solution at 25oC in distilled Water
|
9.0
+- 1
|
Solubility
in distilled water
|
40
gpl min. at 25oC
|
Bulk
density
|
1.1
+- 0.1 gm/ml
|
Shade
|
Pinkish
White
|
Stability and Compatibility:
pH
|
7 -
12
|
Hard
water
|
Up
to 350ppm CaCO3
|
Peroxide
Bleach
|
Not
Stable
|
Sodium
Dithionite Bleach
|
Not
Stable
|
Alkali
|
Very
Good
|
Acid
|
Not
Stable
|
Fastness Properties:
Light
|
3 - 4
|
Washing
(test, 1oC)
|
5
|
| Washing
(test 3, 60oC) |
4
|
| Washing
(test 3, 95oC) |
4
|
| Dry
Heat (30 Sec / 180oC)) |
5
|
Perspiration
(acid & alkaline)
|
5
|
Application (Suggested Recipies)
Ingredients
|
Exhaust
Method for
self dyeing
|
Exhaust
Method for
Tapping
|
Padding
Method for
Self dyeing
|
Padding
Method for
Tapping
|
Varahi Hi
|
0.5 - 1.5%
|
0.3 - 0.6%
|
0.5 - 1.0 gpl
|
0.3 - 0.5
|
pH
|
7 - 12
|
7 - 12
|
7 - 12
|
7 - 12
|
Treatment Time
|
30 min.
|
20 - 30 min.
|
-
|
-
|
Temperature
|
R.T. - 60oC |
R.T. - 60oC |
-
|
-
|
Liquor pick up
|
-
|
-
|
60-80%
|
60-80%
|
Ingredients
|
Padding in finish
Formulation for self
Dyeing
|
Padding in finish
Formulation for tapping
|
PE Emulsion
(Non-Ionic)
|
16 - 30 gpl
|
15 - 30 gpl
|
Softening Agent
with
|
20 - 40 gpl
|
20 - 40 gpl
|
Antistatic
properties Varahi Hi
|
0.5 - 1.0 g/l
|
0.3 - 0.5 g/l
|
Liquor pick up
|
60 - 80%
|
60 - 80%
|
Drying on stenter
|
110 -130oC
|
110 - 130oC
|
- Topping is carried out on Varahi 2B or Si Liquid
dyed ground. Concentration can be taken as per the required shade.
Levelling/Stripping
1 - 2 gl suitable stripping agent (30 - 60 mins. At 70 - 90oC)
For a better white effect and to avoid subsequent yellowing an addition
of hydrogen peroxide to the stripping bath is recommended.
Safety Data Sheet Varahi Hi
Appearance
|
Varahi Hi is
light green colour fine powder
|
Composition
|
Anionic
Stillness derivative optical brightening agent
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Storage
|
Varahi Hi may be
stored under extremes of ambient temperature without hazard
|
Fire fighting
|
Varahi Hi itself
will not support combustion. In the event of a fire, carbon dioxide, dry chemical or water spray may all be used without hazard.
|
Oral Toxicity
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Varahi Hi has a
fairly low order of Oral toxicity
|
Skin Effect
|
Can cause mild
irritation. If the material is Split on the skin, wash thoroughly with water.
|
Splashes in the
Eye
|
Varahi Hi will
irritate the eye. If the powder gets into the eye wash it for 15 mins with water or seek medical advice
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Spillage
|
Spilled Varahi
Hi is relatively innocuous, we recommended as with all chemicals that in Handling, good standards of house keeping and Personal hygiene by practiced.
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- Information contains in data/sheet is to the best
of our knowledge but without any guarantee/warrantee.
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