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Potassium
Sodium Tartrate commonly called Rochelle Salt
or Seignette Salt was discovered in 1672 by Pierre
SEIGNETTE, pharmacist in La Rochelle.
It
is one of the most beautiful salt of Tartaric
Acid. It is obtained by action of Sodium Hydroxide
on the crude Cream of Tartar which is a by-product
of the wine Industry. Successive purification
stages enable to obtain a refined product of high
purity.
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Synonyms
-
Seignette salt
- (2R,
3R) - 2,3 dihydroxybutane - 1,4 - dioïc
acid, Potassium Sodium Salt, tetrahydrate
- L
(+) Tartaric Acid mono sodium mono Potassium
Tartrate
- Butanedioïc
acid, 2,3 - dihydroxy -, [R(R*, R*)] -, monopotassium
monosodium salt, tetrahydrate
- Potassium
sodium Tartrate
- Monopotassium,
monosodium tartrate, tetrahydrate
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Forms and presentations
Rochelle
Salt is marketed in granulars and powder form.
The bulk density is near to 1.
| Granular
qualities |
Correspondence
in microns |
Correspondence
in USS MESH |
%
of retain(R)
& passing (P) |
| Coarse
granular |
2000-450 |
10-40 |
R
(2000u) <2
P(450u) <5 |
|
Fine granular |
710-100 |
25-140 |
R
(710u) <2
P(100u) <10 |
| Powder |
250-100 |
60-140 |
R
(250u) <20
P(100u) <45 |
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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Uses
Rochelle
Salt is mainly used in the following activity
branches :
•
Galvanoplasty
• Food Industry (manufacturing of pectins
and gelatines)
• Pharmaceutical Industry
• Cigarette paper (combustion regulator)
• Piezo-electricity
• Treatment of metals
• gas purification
• Encre for graphics
• mirrors silverplating
• Laboratory reagent
Packing
Multiply
paper bags lined with polyethylene of 25 kgs net.
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