Tara Powder ,(Caesalpinia Spinosa), Tanning and Re-tanning

Tara Powder ,(Caesalpinia Spinosa), Tanning and Re-tanning

PRINCIPAL USES: Tanning and Re-tanning
SCIENTIFIC NAME: Caesalpinia Spinosa
MOLECULE: C75H52O46
Molecular Weight: 1688

PRODUCT DESCRIPTION:
Our Tara powder is a vegetable tannin agent, composed of pyrogallol tannin. The powder is obtained from the milling of Tara pods. The Tara tannin does not contain coloring substances so it procures a very bright aspect and a light-resistance to leather. Tara powder also gives to leather fullness and softness and as well a peculiar resistance to elongation.

APPLICATIONS:
The Tara powder is highly recommended in the process of tanning and re-tanning of leathers designed for automotive and domestic upholstery. It allows you to obtain very high quality leather, clearer and brighter than leathers from others vegetable tanning agent.

COMPOSITION AND CHARACTERISTICS:
Fine and uniform powder, Clear beige colored, Light resistance
Tannin Content: 56% (+/- 4%) (Measured by SGS Peru AOAC 955.35:2005; 18th Ed, Titrimetric Method)
Moisture Content: From 6 to 8%
Ph: 3,0 to 4,0
Insoluble Matter: From 5 to 15%
Grading: 92% in MESH 100

STORAGE AND PACKAGING:
More than 2 years under cool and dry conditions when stored in original, sealed packaging
25 kg laminated polypropylene bags

Color range: clear beige without a mordant and gray and black with ferrous sulfate

Mordant: none

Light fastness: improves light fastness for all dyes

WOF: 10%

Cold dyeing: no

Hot dyeing: yes

Low Impact Method: no

Works better with cellulose than protein fibers.

Tara powder is a vegetable tannin of the pyrogallic type and is produced from the pods of a stocky shrub or small tree, the Tara or Cesalpinia Spinosa.

The fruits are 43-51 percent tannin.  Our Tara comes from Peru where the shrubs grow in the mild climate of the valleys of the Andes. The plants grow predominantly as wild plants and to a small extent, they are cultivated by the native farmers as a protection against erosion. In April the Tara husks are harvested without damaging the trees. The sales of these husks are an important source of income for the rural population in Peru. This is a very sustainable crop and a great source for tannin.

Tara powder is used for producing a high grade of leather as it changes the base color only slightly.  The fruits are also used for ink and black dye. In natural dyeing and botanical printing it creates wonderful deep shades of black.  

Use Tara at 10% WOF for improving light and wash fastness.

For deep blacks use 20% WOF and a post mordant of 1% Ferrous Sulfate.