Unitan

Leather Tanning Agents

The Quebracho Colorado extracts and its derivates are worldwide known since 1900 as natural products that allow tanners to produce a wide variety of tanned leather with a natural feel and a beautiful look. Unitán, with its two factories ISO 9001-2008 certified, has the world's bestselling vegetable extract product line. Our vegetable extracts are environmentally- friendly and give our customers the best choice for their leather production in a natural way.

UNITAN/CROWN ATO Quebracho extract has been chemically treated to transform the insolubles inherent in a Natural Quebracho extract with the additional advantage of having been spraydried offering the highest tannin content among vegetable extracts.

PROPERTIES
- Complete dissolution in cold water.
- High tannin content.
- Easy penetration.
- Excellent tanning properties.
- Non dusty.
- Low astringency.
- Good weight yield.
- Full compatibility with vegetable tans and syntans.

APPLICATIONS
UNITAN / CROWN ATO may be used in all vegetable and mixed tanning and retanning processes, by itself or combined with other vegetable extracts or synthetic products. It is the most versatile vegetable extract and the most widely used in the world.

STORAGE:
Storage in a dry, covered place with the original packaging closed is recommended.

This is orientative information which we believe correct. The supplier will not be held responsible for wrong usage.

spraydried quebracho extract is a totally natural product also known as warm soluble extract. Being a natural extract it has larger tannin molecules and better filling properties than any other vegetable extract. It contains a percentage of insolubles (flovaphenes) which render suitable for use by those tanners having their own dissolving and solubilising facilities.

PROPERTIES
-High tannin content.
- Low ash content.
- High filling capacity.

APPLICATIONS
SUPERIOR ATO is a 100% Natural vegetable extract which contains cold–water insoluble organics components and it is advisable to solubilize them full/partially previous use. It is recomended for use in hot pits or drums for tanning "heavy"vegetable leather.

STORAGE:
Storage in a dry, covered place with the original packaging closed is recommended.

This is orientative information which we believe correct. The supplier will not be held responsible for wrong usage.

CROWN BLOCK solid soluble Quebracho extract has been chemically treated to transform the insolubles inherent in a Natural Quebracho extract thus making it fully soluble in cold water.

PROPERTIES
- Full cold-water dissolution.
- High tannin content.
- Quick penetration.
- Excellent tanning properties at natural ph.
- Good weight yield.

APPLICATIONS
CROWN BLOCK is recommended for tanning sole and all kind of heavy leather in pits.

STORAGE:
Storage in a dry, covered place with the original packaging closed is recommended.

This is orientative information which we believe correct. The supplier will not be held responsible for wrong usage.

SUPERIOR BLOCK is a totally natural solid Quebracho extract also known as warm soluble extract. Being a natural extract it has larger tannin molecules and better filling properties than any other vegetable extract. It contains a percentage of insolubles (flovaphenes) which render suitable for use by those tanners having their own dissolving and solubilising facilities.

PROPERTIES
- High tannin content.
- Low ash content.
- High filling capacity.

APPLICATIONS:
Storage in a dry, covered place with the original packaging closed is recommended.

This is orientative information which we believe correct. The supplier will not be held responsible for wrong usage.

The Ultrafine Tara Powder UNITAN TM is a material source of tannins that come from the milling of the Tara pod (Caesalpinea Spinoza). The tannins that get UNITAN TM are pyrogallol and can be hydrolysed with acids and enzymes. It is used for all kind of leather with vegetal or mixed vegetable characteristics to make upholstery, automotive and garment leather. It is also used to prepare dyeing ferric salts and as mordant of dyeing and printing of fabrics.
The Tara produces a leather which can be more easily dyed with a particular light colour. UNITAN TM is appropriate for vegetalized leathers that require a good light fastness. Together with adequate oils it is possible to obtain good fogging values.

WARNING
UNITAN TMUNITAN TM is a product-sensitive iron salts, like all plant extracts. Therefore in all operations tanning and retanning contact with ferrous materials should be avoid. To improve the performance of the product is recommended to add small amounts of UNICLAR to the liquors to prevent stains, as well as the final bath wash removing hides and stacking with the wash water.

PACKAGING
40 bags polyethylene/polypropylene of 25 kg each, pallet per 1000 kg.
GALLID ACID:
It is possible to get Gallic Acid Monohydrated from Tara.

APPLICATIONS
-In pharmacology, as urine astringent and internal antihemorragic agent.
-As principal compound for ink formulations, print and lithography.
-As an emulsion stabilizer and photograph revelation.
-It is applied as an ingredient for the preparation for hair dying and suntan lotion, and so on.

PACKAGING
box per 25kg.