POSYNTAN PH4 is a synthetic substitute tanning agent for white leather based on phenols and containing about 90% of active substance.
POSYNTAN PH4 has an excellent tanning and retanning power and it can therefore be used on all type of leather.
POSYNTAN PH4 confers good fullness and elasticity to the grain and helps the dyes dispersion.
POSYNTAN PH4 is especially recommended on softy leather, nappa and garment leather.
The percentage of use varies from 2% to 10% depending on the required items.
