Description

Alum Hematoxylin is a complex salt formed from hematoxylin and aluminum, widely recognized as a cornerstone histological stain. Its primary value lies in its ability to selectively and clearly stain cell nuclei a deep blue-purple color, providing critical contrast in microscopic analysis. This product is essential for professionals in histology, pathology, cytology, and biological research who require reliable and consistent staining for tissue diagnosis and study.

Application

• Histological Staining: Primary application in the Harris, Mayer's, and Ehrlich's hematoxylin formulas for nuclear staining in tissue sections.
• Pathology and Diagnostic Labs: Used in routine H&E (Hematoxylin and Eosin) staining for disease diagnosis and cancer screening.
• Cytology: Staining of cell smears (e.g., Pap smears) for cytopathological examination.
• Biological Research: Visualization of cellular and nuclear structures in plant and animal tissue samples.
• Education and Training: A fundamental stain used in university and medical school laboratories for teaching microscopy and histology.
• Forensic Science: Employed in the histological examination of tissue samples in forensic investigations.

Basic Information

Product Name	Alum Hematoxylin
CAS No.	1339-94-2
Molecular Formula	C16H14O6 · xAl
Molecular Weight	Variable (Base hematoxylin: 302.28 g/mol)
Synonyms	Hematoxylin Aluminum Complex; Hematoxylin Alum; Hemalum; Hematoxylin Lake; Aluminum Hematoxylin; CI 75290; Natural Black 1; Oxidized Hematoxylin Aluminum Salt
EINECS	215-694-1 (for Hematoxylin)

Quality Control

Our Alum Hematoxylin is manufactured under controlled conditions to ensure batch-to-batch consistency suitable for diagnostic and research applications. While not typically USP/NF grade, it is produced to meet the stringent requirements of histological staining. Certificates of Analysis (COA) detailing identity, purity, and performance in staining are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). The product is light-sensitive (store away from light) and should be kept in its original packaging until use to prevent degradation and ensure optimal staining performance.

Specification

Item	Specification
Appearance	Dark blue to violet powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (Hematoxylin Content)	≥ 90% (by HPLC)
Solubility (in Water)	Partially soluble, forms a staining solution
Staining Performance	Produces clear, intense nuclear staining in control tissue sections
Loss on Drying	≤ 5.0%
Residue on Ignition (as Al2O3)	To be specified per batch

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.