Why leather gets hardened aftet taning

Why leather gets hardened aftet taning
  • 4 answers
Thank you bhai

Dr.Niraj Kumar 6 months, 1 week ago

Leather is colloidal in nature and has +vely charged particles. When they are soaked in tannin, their mutual coagulation takes place and, thus leather becomes hard after tanning.
Chapter 5 ncert book Is chapter ka last 2ya3 page answer
Due to cogulation

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