Retanning Agent


Aluminium tanning agent

Chemical & Physical Data:

Appearance:                                  White powder

Content of aluminium oxide/%:      20.0~24.0

pH (1%)                                      3.0~5.0 

Solubility:                                        Good


lDOWELLTAN FR-73 can be used alone or in combination with chrome tanning agent. The leathers tanned with DOWELLTAN FR-73 are white and can assure a bright colour shade.

lDOWELLTAN FR-73, in combination with non-metallic tanning agent for chrome-free tanning, can improve the leather shrinkage temperature and improve the leather feel.

lDOWELLTAN FR-73 applied in oil tanning can improve the fur shrink temperature and the fullness of oil tanned leather.


lUsed for fur pretanning process, the dosage is usually 1-4 g/L.

lUsed for tanning process of mink skin, fox skin and raccoon skin, the dosage is usually 1-4 g/L.


25KG plastic woven bag


This product has s shelf life of 1 year if it is stored in its tightly sealed original packaging at temperature below 5℃ to 35℃. Bags should be tightly resealed each time after material is taken from them, and their contents should be used up as soon as possible after they have been opened. Non-dangerous chemical.