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Norm
ISO 4614:1977
Issue date: 1977 07 01
Plastics — Melamine-formaldehyde mouldings — Determination of extractable formaldehyde
Liquids simulating fodd and beverages are placed in contact with mouldings of the sample material, under defined conditions. The formaldehyde content of the liquid is the...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 4 Pages
Language:
English
ICS
Liquids simulating fodd and beverages are placed in contact with mouldings of the sample material, under defined conditions. The formaldehyde content of the liquid is then determined and the quantity of formaldehyde extracted per unit area of content is calculated. Two spectrophotometric methods for the determination of formaldehyde in the liquid, using chromotropic acid disodium salt or acetylacetone as reagents, are given.
