Potassium permanganate stain

Potassium permanganate, approximately saturated solution - (Note wear rubber gloves to prevent staining hands.) dissolve 50 g KMnO in I I water (solubility = 65 g at 20°C). Store in a brown glass bottle. 

The potassium permanganate impinger solutions. Any permanganate stain remaining in the impinger shell was removed with a few drops of 10% w/v hydroxylamine hydrochloride followed by a rinse with distilled water. These rinses were added to the permanganate in the sample bottle. 

If a slice of fresh (frozen) tissue is examined directly, little is seen because most of the atoms found in cells are of low atomic mass and scatter electrons weakly and uniformly. Therefore, thin sections must be "stained with atoms of high atomic mass, e.g., by treatment with potassium permanganate or osmium tetroxide. Tissues must also be "fixed" to prevent disruption of cell structures during the process of... 

When liposomes are stained with osmium tetroxide or potassium permanganate, embedded, and sectioned... 

Dampen the stains with a 5% solution of potassium permanganate. Allow to set for a few minutes and then apply a 10% solution of sodium bisulfite. Care should be taken with colored fabrics, as the area may become bleached. Test on an out-of-the-way area, such as a shirttail. 

Wolsey and Alexander (Brit. Pat. 586020, 1947) describe a method of making wool shrink-resistant by treating it for a period of a few minutes in a solution of potassium permanganate at a pH of less than 2. This is followed by treatment with a sodium bisulphite solution to remove the brown stain caused by the deposition of manganese oxides. The details quoted in the patent are as follows ... 

The acrylic component can be left undyed quite easily because it has no affinity for those direct dyes which are classified as acetate reserving. There are also many diazotized and developed direct, as well as vat dyes which will dye the cellulose only. Disperse dyes can be used for acrylonitrile fibre, but they will stain the cotton or rayon component, and clearing with a solution containing 8 oz to 1 lb of potassium permanganate and 2 oz of sulphuric acid per 100 gallons at 30 C (86 F) for 15 minutes, will probably be necessary. The oxides of manganese will subsequently have to be removed with sodium bisulphite. 

Disperse dyes are not suitable because the polyamide is dyed much more heavily than the acrylic. The cationic dyes can be applied with 5 per cent of Glauber s salt at pH 4-5 adjusted with acetic acid, at the boil. The polyamide will only be slightly stained, if at all. The latter fibre can be cleared, if necessary, with potassium permanganate and glacial acetic acid (1 lb and 2 oz per 100 gallons respectively) at 25 C (77°F), followed by treatment wdth. sodium bisulphite. 

Potassium permanganate (KMn04) is a stain remover that can be used to clean most white fabrics. However, there is one problem with using it it is a deep purple color that leaves behind its own stain. Fortunately, the purple stain can then be removed by treating the fabric with oxalic acid. The reaction is as follows. 

A suitable stain for detection of the allene (TLC analysis) is basic aqueous potassium permanganate solution. 

Fig. 26 1. Electron micrograph of Coxiella burnetii in the phagolysosome of an infected yolk sac cell, demonstrating both large (LCV) and small (SCV) cell variants. The bar in the lower right corner represents 0.6 pm. After Renografin (manufactured by Squibb Diagnostics, Princeton, NJ) purification, the cells were fixed with primary fixative and stained with potassium permanganate. The phagolysosome contains many pleomorphic C burnetii organisms. Multiplication by binary transverse fission with septa formation (arrows) is seen.

IV. Diagnosis is based on a history of exposure and the presence of mild gastrointestinal upset or frank corrosive injury. Solutions of potassium permanganate are dark purple, and skin and mucous membranes are often characteristically stained. 

Involutin (145) is responsible for the intense brown stain produced when the fruit body of Paxillus involutus is bruised. It formed a penta-acetate which, on oxidation with chromium trioxide or potassium permanganate solution gave a mixture of 3,4-diacetoxybenzoic acid and 4-acetoxybenzoic acid. With dimethyl sulphate and sodium hydroxide the trimethyl ether (151) resulted 201, 202). These observations, coupled with spectroscopic comparison with model compounds, established the nature of the cyclopentanoid nucleus and the level of hydrox-... 

Wear latex gloves to prevent solutions of potassium permanganate from contacting your skin.These solutions cause unsightly stains on your skin and last several days. If contact occurs, wash the affected area thoroughly with warm water. 

Wear latex gloves to keep the acids from contacting your skin when you prepare and handle solutions of potassium permanganate or chromic acid.These solutions cause unsightiy stains on your skin for several days, and the chromic acid-sulfuric acid soiution may cause severe chemical burns. If these oxidants contact your skin, immediateiy fiood the affected area with water. In the case of chromic acid, also rinse the area with 5% sodium bicarbonate solution. 

Procedure. A small amount of the solid test material or a drop of its solution is placed in a micro test tube and evaporated if need be. A few mg of potassium permanganate and 2 drops of 6 iST sulfuric acid are introduced and the mouth of the tube is covered with a disk of filter paper moistened with freshly prepared reagent solution. The tube is then immersed in boiling water. The appearance of a blue-green stain within 2-3 minutes shows the presence of chlorine. If the quantity of chlorine is small, the fleck is grey-violet. The test is clearly distinct even in the presence of a one hundred-fold amount of bromine or iodine since the latter yield a yellowish stain that is characteristic of these two halogens. The latter fleck, in contrast to the chlorine stain, is easily reduced (made colorless) with a drop of 0.1 iV sodium thiosulfate. 

Potassium Permanganate, saturated 2 days 3.27 1.39 Stained black... 

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