TARA POWDER

  TARA POWDER

It is well known that various plants from the Caesalpinia family bear fruits, called pods, which contain large quantities of tanning substances. Tara belong to “Casaelpinia Tintoria” which contains tannin of the pyrgallic group and a small quantity of catechol derivatives.

 

ANALYTICAL DATA AND MAIN PROPERTIES

TARA POWDER is fine light brown powder with the following analytical Values:

Physical aspect                            :        Hygroscopic , dust-free , light brown powder

Iconic character                          :        Anionic

PCP                                              :        Exempt

Active matter (%)                      :        Minimum 93.5

Ph (20% v/w Aqueous sol.)      :        4.0-5.0

 

The tannin of   TARA POWDER   is practically free from colouring substances and consequently it permits to obtain very bright and lightfast leathers. Moreover,  TARA POWDER  imparts to leathers fullness and softness ,maintaining a fine and tight grain. The grain of leathers tanned  with  TARA POWDER  has a higher resistance to breaking load than that obtained with any other vegetable tannin.

 

INDICATION OF QUANTITIES FOR SPECIFIC USES

♦ For the retannage of bovine upper and upholstery leathers : 2-10%

♦ For the retainage of goat skins and calf :  2-3%

The above percentages date are referred on shaved weight.

♦ In the vegetable tannage : in any proportion , either alone or blended with other

Extracts

 

Advice : TARA POWDER is light fast but sensitive to iron salts.it is therefore advisable to add small quantities of sequestering agent to prevent the formation of stains. ”The Information given in this leaflet is, to our knowledge, correct and complete, No responsibility can be accepted for an incorrect use of the product”.