How to Test If Alcohol Has Methanol

Written by joe kelly
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How to Test If Alcohol Has Methanol
Test for methanol in home-distilled alcohols. (Getty Thinkstock)

Methanol is type of alcohol used in the manufacture and production of products such as antifreeze, some paints, resin, perfume and some types of fuel. Methanol is toxic and could be fatal as little as 3 tablespoons were consumed. Methanol poisoning may appear to be normal intoxication but the victim will continue to get worse until he dies, if untreated. If you are distilling alcohol at home you can test your homemade liquor for methanol to prevent the consumption of this toxic alcohol, which can cause blindness or death.

Skill level:
Easy

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Things you need

  • Potassium dichromate
  • Litmus paper

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Instructions

  1. 1

    Place two 1 oz (30ml) samples of the alcohol in question into separate containers.

  2. 2

    Mix 5 grams of potassium dichromate with one of the samples and let it sit for 10 to 15 minutes.

  3. 3

    Waft the alcohol and potassium dichromate sample toward your nose. If you detect an acrid smell, methanol is present in the alcohol.

  4. 4

    Place a piece of red litmus paper in the second sample and wait 1 to 2 minutes.

  5. 5

    Check the litmus paper. If it has turned from red to blue, methanol is present.

  6. 6

    Dispose of the alcohol properly and do not consume it as it is highly poisonous.

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