Find the incorrect matching.

Options

A. Heaematoxylin -Heart wood Haemataxylon carnpechianum
B. Santalin-Heart wood of Caesalpinia sappan
C. Brasilin-Pith of Caesalpinia sappan
D. Tannins-Heart wood of Acacia catechu (katha)

Answer

To find the incorrect matching among the given pairs, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Identify the First Pair: Hematoxylin and Hardwood of Hematoxylin campycianum**
- Hematoxylin is a natural dye extracted from the logwood tree, specifically from the species *Hematoxylon campechianum* (note the corrected spelling).
- It is commonly used as a stain in histology.
- This pair is correctly matched.

2. **Identify the Second Pair: Santolin and Hartwood of Caesalpinia sapon**
- Santolin is described as a red crystalline compound found in red sandalwood and barwood.
- The scientific name for red sandalwood is *Pterocarpus santalinus* and for barwood is *Baphia nitida*.
- However, *Caesalpinia sapon* (commonly known as Brazil wood) does not produce Santolin; instead, it yields Brazilin, which is a different compound.
- Therefore, this pair is incorrectly matched.

3. **Identify the Third Pair: Tannins from Hardwood of Acacia catichum**
- Tannins are compounds used in various applications, including dyeing and as astringents.
- They can be derived from various species of Acacia, and *Acacia catechu* (note the correct spelling) is indeed a source of tannins.
- This pair is correctly matched.

4. **Conclusion:**
- The incorrect matching is between Santolin and Hartwood of *Caesalpinia sapon*. The correct pairing should involve Brazilin instead of Santolin.

### Final Answer:
The incorrect matching is Santolin and Hartwood of *Caesalpinia sapon*.