Description

Thionin is a synthetic phenothiazine dye and a vital organic chemical intermediate. This compound is valued for its strong metachromatic properties and its role as a redox indicator in analytical chemistry. It is primarily utilized by manufacturers and research institutions in the life sciences, industrial staining, and specialty chemical synthesis sectors.

Application

• Biological Staining: Used as a metachromatic dye for staining nucleic acids (DNA/RNA) and acidic polysaccharides like glycosaminoglycans in histology and cytology.
• Microscopy & Diagnostics: Employed in Nissl staining for neuronal tissue and as a component in certain diagnostic kits and assays.
• Redox Indicator: Serves as an oxidation-reduction (redox) indicator in titrimetric analysis and biochemical research due to its distinct color change.
• Chemical Synthesis: Acts as a key intermediate or precursor in the synthesis of more complex phenothiazine derivatives and other specialty organic compounds.
• Photographic Industry: Historically used in sensitizing dyes for photographic emulsions.
• Research & Development: Essential reagent in academic and industrial R&D for studies in biochemistry, neuroscience, and material science.

Basic Information

Product Name	Thionin
CAS No.	135-59-1
Molecular Formula	C12H10N3S+Cl-
Molecular Weight	263.75 g/mol (for chloride salt)
Synonyms	Thionine; Lauth's Violet; CI 52000; Phenothiazin-5-ium, 3,7-diamino-, chloride; 3,7-Diamino-5-phenothiazinium chloride; 7-Amino-3-imino-3H-phenothiazine hydrochloride; Thionine chloride; Thionine blue
EINECS	205-207-5

Quality Control

Our Thionin is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR and UV-Vis spectroscopy, to ensure it meets precise specifications for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark green to bronze crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (UV-Vis)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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