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Tartaric
Acid known from antiquity as its acid potassium
salt (a sparingly soluble compound which formed
a deposit in wine vats) was discovered in 1769
by the Swedish chemist SCHEELE who managed to
extract it by its calcium salt with sulphuric
acid. That extraction method is still currently
used nowadays. There are four stereo isomeric
forms of Tartaric Acid which were pointed out
by L. PASTEUR (1848-1860) during his researches
on optical activity of asymmetric molecules. L(+)
Tartaric Acid is the only natural form.
It
is widely distributed in plants, either in its
free form or as salts. It is found in many fruits,
especially in grapes. The raw materials used in
the manufacture are exclusively natural residues
derived from vinification.
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Synonyms
- Natural
Tartaric Acid
- Dextrotartaric
Acid
- (+)
Tartaric Acid
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Forms and presentations
| Granular
qualities |
Correspondence
in microns |
Correspondence
in USS MESH |
%
of retain(R)
& passing (P) |
| 12-30 |
2000-710 |
10-25 |
R 12 : 0%
P 30 : 10% |
| 12-50 |
2000-450 |
10-~38 |
R 12 : 0%
P 50 : 10% |
| 30-50 |
710-450 |
25-~38 |
R 30 : 10%
P 50 : 10% |
| 30-80 |
710-250 |
25-60 |
R 30 : 10%
P 80 : 10% |
| 50-80 |
450-250 |
~38-120 |
R 50 : 5%
P 80 : 10% |
| 50-140 |
450-125 |
~38-120 |
R 50 : 10%
P 140 : 5% |
| 80-140 |
250-125 |
60-120 |
R 80 : 10%
P 140 : 5% |
fine powder |
200
150 |
~70
100 |
R 200u < 5%
R 150u < 10% |
| very fine powder |
200
71 |
~70
200 |
R 200u < 5%
R 71u >= 30% |
| extra-fine powder |
71
50 |
200
~271 |
R 71u < 5%
R 50u < 10% |
| lumps |
coarse
medium (2-8)
small (8-10) |
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Uses
L(+)
Tartaric Acid is particularly used in the food,
pharmaceutical and vine industries. There are
also numerous applications in other fields. .
L(+) Tartaric Acid is used :
•
in the acidification of vine musts
• as an acidifier and taste enhancer
in sweets, candies, jellies, jams, fruit nectars,
ice creams, gelatine and pastes.
• in fruit, vegetable or fish preserves,
where it acts as a synergistic anti-oxidant
and also stabilises the pH, colour, taste
and nutritional value
• in greases and oils as an anti-oxidant
• in the preparation of carbonated beverages
• in the pharmaceutical industry as an
excipient or carrier for the active principal
helping to correct the basicity
• because of its simplicity of use, stability
and high solubility, as an acidification agent
used a lot for foaming tablets and powders
• as emulsifier and preservative in the
bakery industry
• in the cement industry, and particularly,
in plaster and gypsum, where its retardant
action facilitates handling of these materials
•
in polishing and cleaning of metals
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Storage
and stability
Tartaric
Acid must be kept in an airtight packing and stocked
in a dry place, away from humidity and in normal
conditions of temperature. It is a stable compound
which does not alter with time if those storage
advises are respected. An use by date is although
given according to the regulation, it is one year.
That product tends to cake ; a too long storage
is not advised, especially for the very fine granular
sizes.
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Packing
Multiply
paper bags lined with polyethylene of 25 Kgs net.
Bigbags
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