Introduction:
Sorbitol is low caloric refined sugar alcohol, which is produced
from dextrose. Chemically it is hexahydric alcohol and is also
known as hexatol, D-Glucitol and D- Sorbitol. Chemically,
Sorbitol is a hexitol, C6H14O6. Sorbitol was first isolated
from the juice Mountain Ash berry (Sorbus
aucuparia L) in 1872. Later on it was also found in
fresh apple, cherry, and plum as part of freshness. Today,
Sorbitol is commercially prepared by high-pressure
hydrogenation catalytic process. Sorbitol syrup has mild
pleasant sweet taste, without bitter after taste.
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Sorbitol
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Specifications:
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Non
–Crystallizing Sorbitol
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Crystallizing
Sorbitol
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Description
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A
clean colourless viscous liquid
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A
clear colourless viscous liquid
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Taste
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Mild
sweet
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Mild
sweet
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Specific
gravity
at
25 0 C
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1.285
Min
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1.290
Min
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Refractive
Index
at
20 0 C
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1.455
to 1.465
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1.457
to 1.462
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Acidity
Or
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*NMT
0.2 ml of 0.01 M Naoh or NMT 0.3 ml of 0.01M HCL
Solution as per specified test in I.P
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*NMT
0.2ml of 0.01M Naoh or NMT 0.3 ml of 0.01 M solution as
per specified test in I.P
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Reducing
Sugar
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*NLT
12.8ml of 0.05M Sodium thiosulphate solution should be
consumed as per specified
test
in I.P.
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*NLT
12.8ml of 0.05M Sodium thiosulphate solution should be
consumed as per specified test in I.P
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Optical
Rotation
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+1.5
0 to +3.5 0
(as
per specified test in I.P.)
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0 0
to +1.5 0
(as
per specified test in I.P)
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Clarity
& Colour
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Clear
and colourless
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Clean
and colourless
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Arsenic
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NMT
2 ppm
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NMT
2ppm
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Heavy
Metals
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NMT
10 ppm
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NMT
10 PPM
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Chloride
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NMT
50 ppm
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NMT
50 ppm
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Sulphate
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NMT
125 ppm
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NMT
125 ppm
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Nickel
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NMT
1 ppm
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NMT
1 ppm
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Sulphated
Ash
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NMT
0.1% W/W
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NMT
0.1% W/W
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Solid
Matter
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68%
to 72% W/W
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69%
to 71% W/W
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Polyols
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NLT
62% W/W As D-Sorbitol
*NMT
= NOT MORE THAN
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68%
to 72% W/W As D-Sorbitol
*NLT
= NOT LESS THAN
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Sorbitol 70% (IP GRADE):
Shelf
life: 3 years from Production Date
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Test
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Limits
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DESCRIPTION
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A
clear colourless to faintly yellow viscous liquid
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TASTE
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Mild sweet
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SPECIFIC GRAVITY AT 25oC
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1.285
MIN
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REFRACTIVE INDEX AT 20oC
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1.455
TO 1.465
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ACIDITY OR ALKALINITY
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NMT
0.2ml of 0.01M NaOH or NMT 0.3ml of 0.01M HCL
Solution as per specified test in I.P.
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REDUCING SUGAR
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0.2 % Max
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OPTICAL ROTATION
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+1.5o
TO +3.5o
(as per specified test in I.P.)
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CLARITY & COLOR
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10% solution should be clear and
colourless
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ARSENIC
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NMT 2ppm
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HEAVY METALS
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NMT 10ppm
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CHLORIDE
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NMT 50ppm
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SULPHATE
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NMT 125ppm
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RESIDUE ON IGNITION
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NMT
0.1% W/W
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SOLID MATTER
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68% TO 72%W/W
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POLYOLS (Total Alcohols)
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NLT 62%W/W (Calculated as D-GLUCITOL)
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Applications:
Oral Hygiene Formulations:
Humectants retain water to maintain
the paste in toothpaste. Humectants keep the solid and liquid
phases of toothpaste together. They also can add a coolness
and/or sweetness to the toothpaste; this makes toothpaste feel
pleasant in the mouth when used. Most toothpastes use sorbitol
as humectants.
Sorbitol has resistance to fermentation caused by dental
plaque bacteria.
Cosmetics:
Sorbitol is often used in modern cosmetics as a
humectant and thickener. Some transparent gels can only be
made with Sorbitol as it has a refractive index sufficiently
high for transparent formulations. It is preferred in cosmetics, because
in addition to its moisture stabilizing property, it is
slippery and has emulsifying properties. It is non-toxic and
leaves an agreeable coolness on the skin. It is a useful
component of beauty creams, shampoos, shaving creams, lotions,
soaps etc.
Food Industry:
Sorbitol
is widely utilized for diabetic foods. It is used to maintain
the freshness in confectionary and bakery products, to
preserve the colour and also improves the shelf life of canned
fruits. It does not undergo milliards reaction. It is
incorporated as per users requirements into various food
items like toffees, biscuits, jams, jellies, chocolates,
candies, fruit drinks, carbonated drinks, canned fruits etc.
Pharmaceutical Industry:
Sorbitol
is used as an ingredient in a number of pharmaceutical
preparations like syrups, olixirs, sulpha-drugs, tonics,
vitamins and amino acids-complex preparations, laxatives and
ointments d for hepatic and diabetic diseases, SORBITOL
injections are used.
Tobacco Industry:
Tobacco
processed with SORBITOL gives mild aromatic fumes when smoked
and does not develop acrolein, which may be the case when
glycerin is used as humectants. SORBITOL being non-volatile,
the tobacco aroma is preserved.
Textile Industry:
SORBITOL
is used as a softening agent to ensure better processing of
fibres. Used in textile printing pastes and textile finishes.
When SORBITOL is used it gives a sharp outline, better colour
and sheen to the fabric.
Paper Industry:
SORBITOL
increases the flexibility of paper, thus folding value is
higher while the length of rupture and elongation does not
change abnormally.
Paint Industry:
It
can be used as cost effective replacement of propylene glycol
in liquid paint.
Packing:
In
300 kg HM HDPE barrels, 1 MT IBC and in ISO Tanks
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