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78338-22-4 - Thionin acetate - A18912 - Alfa Aesar

A18912 Thionin acetate

CAS Number

Size Price ($) Quantity Availability
5g 47.71
25g 138.02
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Thionin acetate


Chemical Properties

Formula Weight
Soluble in water (~2.5 mg/ml at 25°C), and HOAc: H2O (1:1) (1 mg/ml). Insoluble in ethanol.


Thionin acetate is a strongly staining metachromatic dye that is widely used for biological staining. Thionine can also be used in place of Schiff reagent in quantitative Feulgen staining of DNA. It can also be used to mediate electron transfer in microbial fuel cells. It is also employed as a general nuclear stain for chromatin and mucin; for staining Nissl granules by end-point buffering and for showing malignant cells in frozen biopsy sections; and as a stain for semi-thin sections of plant material for light microscopy.


Store away from oxidizing agents. Keep the container tightly closed and place it in a cool, dry and well ventilated condition.

Literature References

Huang W.; Vernon LP.; Bell JD. Enhancement of adenylate cyclase activity in S49 lymphoma cell membranes by the toxin thionin from Pyrularia pubera.Toxicon.1994,32(7), 789-97.

D P Penney.; J M Powers.; M Frank.; C Willis.; C Churukian. Analysis and testing of biological stains--the Biological Stain Commission Procedures.Biotech Histochem.2002,77(5-6), 237-275.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

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