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SFS-EN ISO 1061:en
Plastics. Unplasticized cellulose acetate. Determination of free acidity (ISO 1061:1990)
Soveltamisala
Suomenkielistä soveltamisalaa ei ole saatavissa.
The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. This method is not suitable for cellulose acetate containing any additives which may affect the test. The principle consists in treating a test portion of cellulose acetate with water and titrating the resultant solution with sodium hydroxide solution. The free acidity is calculated as the percentage, by mass, of free acetic acid in the cellulose acetate. This second edition cancels and replaces the first edition ISO 1061:1975, of which it constitutes a minor technical revision.
Tämän julkaisun valmistelusta Suomessa vastaa Kemesta ry, puh. 040 820 4888.
The free acidity determined by this method includes acidity extractable by water and acidity due to acidic groups directly attached to the cellulose acetate, e.g. carboxyl groups. This method is not suitable for cellulose acetate containing any additives which may affect the test. The principle consists in treating a test portion of cellulose acetate with water and titrating the resultant solution with sodium hydroxide solution. The free acidity is calculated as the percentage, by mass, of free acetic acid in the cellulose acetate. This second edition cancels and replaces the first edition ISO 1061:1975, of which it constitutes a minor technical revision.
Tämän julkaisun valmistelusta Suomessa vastaa Kemesta ry, puh. 040 820 4888.
Sisällysluettelo
Sidokset
Velvoittavat viittaukset
ISO 565:1990 Test sieves -- Metal wire cloth, perforated metal plate and electroformed sheet -- Nominal sizes of openings
ISO 585:1990 Plastics -- Unplasticized cellulose acetate -- Determination of moisture content
ISO 585:1990 Plastics -- Unplasticized cellulose acetate -- Determination of moisture content
Tekninen komitea
Vahvistuspäivä
04.10.1999
Julkaisupäivä
26.07.2001
Painos
1
Sivumäärä
6
Julkaisun kieli
englanti