Product Details
Hematoxylin extract (oxidized hematoxylin) serves as a natural precursor of hematoxylin dye, which is generated via oxidation. Hematoxylin oxide is the oxidized product formed in this process. In aqueous environments, especially under alkaline conditions, it is prone to further oxidation upon exposure to air.
HEMATEIN Chemical 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 | 13,4651 |
| 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 Information
| Safety Statements | 24/25 |
| WGK Germany | 3 |
| RTECS | DE3120000 |
| F | 8-10-23 |
| HS Code | 32030010 |
Logwood Extract (Haematein) features versatile application scenarios. In the textile industry, it acts as a natural dye ideal for dyeing wool and silk; when combined with different mordants, it can produce a wide range of tones from bright purple to deep black. In laboratory applications, its contained oxidized hematoxylin reacts with metal ions to form colored complexes. It is commonly matched with eosin for H&E staining, facilitating the visualization and analysis of cellular structures.
