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real
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any simple test to test for the present of methanol?
Add something like potassium permanganate (condy's crystals) or potassium dichromate. If it makes a horrible smell, it's probably methanol.real said:any simple test to test for the present of methanol?
do tell us the results! I'd suggest a GC if you have access to one, as a control spike a sample of your solution with some methanol.real said:i am carrying one experiment on the decomposition of sweetener-Aspartame under acidic condition which will give out methanol
BNC992 said:Another question about methanol ----->
Where could I take a sample of a "drinking alcohol" to be tested for methanol contamination?
Methanol is intoxicating but not directly poisonous. It is toxic by its breakdown (toxication) by the enzyme alcohol dehydrogenase in the liver by forming formic acid and formaldehyde which cause blindness by destruction of the optic nerve... If methanol has been ingested, a doctor should be contacted immediately. The usual fatal dose is 100–125 mL (4 fl oz). Toxic effects take hours to start, and effective antidotes can often prevent permanent damage. This is treated using ethanol or fomepizole. Either of these drugs acts to slow down the action of alcohol dehydrogenase on methanol by means of competitive inhibition, so that it is excreted by the kidneys rather than being transformed into toxic metabolites.
For methanol, you can safely wear nitriles, but for acetone the only really resistant glove material I've found is rubber.gabee said:I recently read that latex gloves are very permeable to these solvents and shouldn't be used with them, so I was actually wondering yesterday how I could try to test how much methanol or acetone will permeate the glove
BNC992 said:How long does methanol stay in your system if you accidentaly consume small amounts? (about .10 ml)
Alapo3399 said:This sounds scary. Methanol is toxic, and acidic conditions can create methanol from aspartame? I hope you mean organic acids, because if you mean HCl, then a lot of people should be dying from drinking diet soft drinks ;).
Methanol is a colorless, toxic alcohol that is commonly used in industrial processes and as a fuel. It is important to test for methanol because it can be harmful if ingested or inhaled, and it is also a byproduct of some chemical reactions that may occur in laboratory experiments.
One method for testing for methanol in a liquid sample is using a Gas Chromatography-Mass Spectrometry (GC-MS) machine. This machine separates and identifies different substances in a sample, including methanol. Another method is using a colorimetric test, where a specific chemical reagent is added to the sample and changes color in the presence of methanol.
Yes, there are some simple tests that can be done without specialized equipment. One method is using a flame test, where a small amount of the sample is heated and the color of the flame can indicate the presence of methanol. Another method is using a paper test strip that changes color in the presence of methanol.
The accuracy of the testing methods for methanol depends on the specific method used and the conditions in which the test is performed. Generally, GC-MS is considered the most accurate method, followed by colorimetric tests. Flame tests and paper test strips may be less accurate but can still provide a preliminary indication of the presence of methanol in a sample.
Yes, it is important to follow proper safety procedures when handling methanol, as it is toxic and flammable. This includes wearing appropriate personal protective equipment, working in a well-ventilated area, and disposing of samples and reagents properly. It is also important to be familiar with the specific hazards and safety precautions for the testing method being used.