Describe chemicals used for repair and mending of fragile, damaged papers or binding of rare books and manuscripts.

Preservation and conservation of library materials, particularly fragile and damaged papers, rare books, and manuscripts, are crucial aspects of maintaining cultural heritage and ensuring that valuable materials endure for future generations. When it comes to repairing and mending such delicate items, conservators employ a variety of techniques and materials, including chemicals that have been specifically designed for their preservation properties.

One key consideration in the conservation process is to use materials that are reversible and do not cause further harm to the items being treated. The choice of chemicals is guided by the principles of stability, non-reactivity, and long-term preservation. Here are some commonly used chemicals in the repair and mending of fragile papers, bindings of rare books, and manuscripts:

1. Wheat Starch Paste:
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