For dripping in water e.g. in thermal theory to show the different forms of methylene blue in the solution process at different temperatures. Color remains stable even in hot and boiling water. Melting point at 190 Celsius. In a practical plastic dosing bottle, from which you can dose drop by drop.
Contents: for 15 ml aqueous solution of crystalline methylene blue (C.I.52015 purest USP, BP; methylthionium chloride)
Hazard class and hazard category: Acute toxicity, Category 4, Ingestion, H302
Special remarks: Since dyes strongly color and also irritate the skin, eyes and respiratory tract, protective goggles and protective gloves must be worn.
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