CSA Group Ethanol for industrial use - Methods of test - Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) - Visual colorimetric method ISO 1388-8:1981

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The principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
  • Ethanol for industrial use - Methods of test - Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) - Visual colorimetric method - ISO 1388-8:1981 - CSA Group
    CSA Group
Description
The principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

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Ethanol for industrial use - Methods of test - Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) - Visual colorimetric method - ISO 1388-8:1981 - CSA Group
CSA Group
Toronto, Ontario, Canada
Ethanol for industrial use - Methods of test - Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) - Visual colorimetric method
ISO 1388-8:1981
Ethanol for industrial use - Methods of test - Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) - Visual colorimetric method ISO 1388-8:1981
The principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

The principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.

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  CSA Group
Product Category Standards and Technical Documents
Product Number ISO 1388-8:1981
Product Name Ethanol for industrial use - Methods of test - Part 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) - Visual colorimetric method
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