Product Description
Hematoxylin extract, also known as oxidized hematoxylin, is a natural dye precursor that can be further oxidized to produce hematoxylin. Its oxidation product, hematoxylin oxide, provides a stable and reliable form of the compound. In aqueous solutions—particularly under alkaline conditions—it is readily oxidized by exposure to air, allowing controlled chemical reactions.
Properties
| Melting point | 180 °C |
| Boiling point | 361.5°C (rough estimate) |
| density | 1.2766 (rough estimate) |
| refractive index | 1.4600 (estimate) |
| storage temp. | 2-8°C |
| solubility | Methanol (Slightly) |
| form | Crystalline Powder |
| Colour Index | 75290 |
| pka | 8.02±0.40(Predicted) |
| color | Dark brown |
| Water Solubility | 0.6g/L(20 ºC) |
| Merck | 134651 |
| BRN | 93039 |
| LogP | 0.560 (est) |
| EPA Substance Registry System | Benz[b]indeno[1,2-d]pyran-9(6H)-one, 6a,7-dihydro-3,4,6a,10-tetrahydroxy- (475-25-2) |
| Safety Statements | 24/25 |
| WGK Germany | 3 |
| RTECS | DE3120000 |
| F | 39744 |
| HS Code | 32030010 |
Product Usage
Logwood Extract (Haematein) offers versatile applications. In the textile industry, it serves as a natural dye suitable for wool and silk, producing a range of shades from bright purple to deep black depending on the mordant used. In laboratory settings, the oxidized hematoxylin it contains can form colored complexes with metal ions. It is commonly used in combination with eosin for H&E staining, aiding in the detailed observation and analysis of cell structures
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