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ISO 7327:1994

Plastics — Hardeners and accelerators for epoxide resins — Determination of free acid in acid anhydride
23. 6. 1994.

Опште информације

90.93     30. 6. 2025.

ISO

ISO/TC 61/SC 12

Međunarodni standard

83.080.10  

francuski   engleski  

Kupovina

Objavljen

Jezik na kome želite da primite dokument.

Apstrakt

The principle of the method specified is reacting a small amount of free acid present in a test portion of acid anhydride hardener or accelerator with rhodamine 6G to colour the test solution pink, measuring the absorbance of the coloured solution at a wavelength of about 510 nm using a spectrometer, determining the free-acid content from a calibration curve. The method is suitable for most anhydrides except for polyester and oligomeric anhydrides which may give too wide a scatter of results.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 7327:1994
90.93 Odluka o potvrđivanju standarda
30. 6. 2025.

Nacionalna preuzimanja

SRPS EN ISO 7327:2012  
ISS

Plastične mase — Sredstva za otvrdnjavanje i ubrzivači za epoksidne smole — Određivanje slobodne kiseline u anhidridu kiseline

60.60   Standard objavljen

G061 Saznaj više