PRODUCT

L(+) POTASSIUM SODIUM TARTRATE NATURAL
ROCHELLE SALT NATURAL
SEIGNETTE SALT NATURAL

CAS 304-59-6 / 6381-59-5 . EINECS 206-156-8

 E 337

ORIGIN

THIS PRODUCT IS MADE WITH ONLY NATURAL WINE ORIGIN RAW MATERIALS

DESCRIPTION

Colourless crystals , odourless , taste saline and  cooling , slightly efflorescent in warm air .

FORMULA

COONa-CHOH-CHOH-COOK * 4 H2O

MOLECULAR WEIGHT

282.2

COMPOSITION

Anhydrous salt 74.47% ; Water 24.53% ; Potassium 13.85%; Sodium 8.15% ; Tartaric acid  53.17%.

DENSITY

1,78

APPARENT DENSITY

1,1

MELTING POINT

70 - 80 ºC

SOLUBILITY

Soluble in 1.5 part water ; almost insolublre in alcohol. The aqueous solution is slightly alkaline to litmus , pH 7 -8 .

SPECIFIC ROTATION

[a]²°D + 27° + 30°

USE

As additive in food industry: E337 ; for preparation in sigarette paper ; in manifacture of mirrors ; in plating industry ; for delaying the quick setting of gypsum .

PACKING

25 Kilos paper bags with polyethylene inner bag or 50 Kg fiber drums with polyethylene inner bag.

TRANSPORT                       

No restriction

STORAGE                              

Preserve in tight containers in dry , cool place .

ANALYSIS DATA              

ASSAY 99 - 102%

LOSS ON DRYING 21 - 26 % at 150 °C
ACIDITY / ALCALINITY  pH of 1% acqueous solution  6.5 - 8.5
ARSENIC < 1 ppm

LEAD < 5 ppm

IRON < 5 ppm
SULPHATES < 100 ppm

CHLORIDES < 100 ppm

OXALATES<100ppm as oxalic acid after drying

MERCURY<1ppm

HEAVY METALS (asPb)<10 ppm

SIEVE ANALYSIS min. 60% retained on  60 mesh sieve (0.25 mm)