ISO 182-1:1990

Plastics — Determination of the tendency of compounds and products based on vinyl chloride homopolymers and copolymers to evolve hydrogen chloride and any other acidic products at elevated temperatures — Part 1: Congo red method

Datum objavljivanja: 6. 12. 1990.

Опште информације

Trenutna faza: 90.20 Effective date: 15. 4. 2025.

Inicijator: ISO

Pripada: ISO/TC 61/SC 9

Vrsta: Međunarodni standard

ICS: 83.080.20

Jezik: francuski engleski

Kupovina

Status: Objavljen

PDF

Papir

PDF i papir

Jezik

Jezik na kome želite da primite dokument.

Apstrakt

Intended primarily as a simple and rapid quality-control test during the manufacture and conversion of PVC compounds. Suitable for coloured compounds. Is not recommended for compounds in the form of dry blends. The determination is carried out on a sample of the PVC compound which is maintained at an agreed temperature in still air until the colour of a Congo red paper held above it changes from red to blue. If universal indicator paper is used, the colour change is that corresponding to pH 3. The time required for the colour change is taken to be the stability time, ts. Together with ISO 182-2, replaces and cancels ISO Recommendation R 182:1970.

Životni ciklus

PRETHODNO

POVUČEN
ISO/R 182:1970

TRENUTNO

OBJAVLJEN
ISO 182-1:1990
90.20 Početak postupka preispitivanja standarda
15. 4. 2025.

REVIDIRAN OD

NAPUŠTEN
ISO/DIS 182-1

Pregled

Da biste videli ceo sadržaj, morate se registrovati ili prijaviti pomoću korisničkog imena koje već imate.

Prijavite se