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Logwood Extract (Haematein)#475-25-2

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Chemical Name：Logwood Extract (Haematein)

CAS No.:475-25-2

Molecular Formula：C16H12O6

Sample: Available

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Product Details

Logwood Extract (Haematein)#475-25-2

Hematoxylin extract (oxidized hematoxylin) is a natural dye precursor that can be oxidized to hematoxylin. Hematoxylin oxide is the oxidation product of hematoxylin. In aqueous solutions, especially in alkaline solutions, it is easily oxidized by air.

Logwood Extract (Haematein)#475-25-2

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

Product Usage

Logwood Extract (Haematein) has a wide range of uses. In the textile field, it is used as a natural dye and is suitable for dyeing wool and silk. With the help of different mordants, it can present various tones ranging from bright purple to deep black. In the laboratory, the oxidized hematoxylin it contains can combine with metal ions to form colored complexes. It is often used in combination with eosin for H&E staining to facilitate the observation and analysis of cell structure.

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