ISO 1388:1981
ISO 1388:1981 Ethanol for industrial use – Methods of test – Part 3: Estimation of content of carbonyl compounds present in small amounts – Photometric method
CDN $85.00
Description
The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of this red coloration at a wavelength of about 445 nm. – International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
Edition
1
Published Date
1981-12-01
Status
PUBLISHED
Pages
3
Language
English
Format
Secure PDF
Secure – PDF details
- Save your file locally or view it via a web viewer
- Viewing permissions are restricted exclusively to the purchaser
- Device limits - 3
- Printing – Enabled only to print (1) copy
See more about our Environmental Commitment
Abstract
The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of this red coloration at a wavelength of about 445 nm. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
Previous Editions
Can’t find what you are looking for?
Please contact us at:
Related Documents
-
ISO 16861:2015 Petroleum products – Fuels (class F) – Specifications of dimethyl ether (DME)
CDN $85.00 Add to cart -
ISO 1388:1981 Ethanol for industrial use – Methods of test – Part 4: Estimation of content of carbonyl compounds present in moderate amounts – Titrimetric method
CDN $85.00 Add to cart -
ISO 6796:1981 Polyglycols for industrial use – Determination of hydroxyl number – Phthalic anhydride esterification method
CDN $82.00 Add to cart -
ISO 1388:1981 Ethanol for industrial use – Methods of test – Part 1: General
CDN $85.00 Add to cart
