Traditional Chinese methine ditannin: Herbal Preparation, Dosage & Home Craft Guide

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In short: Traditional Chinese methine ditannin. This entry documents a herbal remedy taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 756 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.

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methine ditanninMolecular formula: (C14H9O9)2CH2 Molecular weight: 656The appearance of methine ditannin is red powder, odorless and tasteless. Insoluble in water but soluble in ethanol and alkali.1. Preparation method of methine ditannin1. …

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