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ISO 1061:1990

Plastics — Unplasticized cellulose acetate — Determination of free acidity
8. 11. 1990.

Опште информације

90.20     15. 4. 2025.

ISO

ISO/TC 61/SC 9

Međunarodni standard

83.080.20  

francuski   engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

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.

Životni ciklus

PRETHODNO

POVUČEN
ISO 1061:1975

TRENUTNO

OBJAVLJEN
ISO 1061:1990
90.20 Početak postupka preispitivanja standarda
15. 4. 2025.

Nacionalna preuzimanja

SRPS EN ISO 1061:2012  
ISS

Plastične mase- Neplastifikovani acetat celuloze- Određivanje slobodne kiselosti

60.60   Standard objavljen

G061 Saznaj više

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