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NEN
NEN EN ISO 14896 : 2009

NEN EN ISO 14896 : 2009

Current

Current

The latest, up-to-date edition.

PLASTICS - POLYURETHANE RAW MATERIALS - DETERMINATION OF ISOCYANATE CONTENT

Published date

12-01-2013

Publisher

Netherlands Standards

1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Application
6 Interferences
7 Sampling
8 Test conditions
9 Reagents
10 Apparatus
11 Method A - Toluene/dibutylamine with aqueous HCI
12 Method B - Toluene/TCB/DBA with methanolic HCI

Gives two methods for measuring the isocyanate content of aromatic isocyanates used as polyurethane raw materials. Method A applies to refined toluene diisocyanate (TDI), methylene-bis-(4-phenylisocyanate) (MDI) and their prepolymers. Method B applies to refined, crude or modified isocyanates derived from toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate.

DevelopmentNote
Supersedes NEN EN ISO 9369. (09/2003) Supersedes NEN ISO 14896. (03/2009)
DocumentType
Standard
PublisherName
Netherlands Standards
Status
Current
Supersedes

Standards Relationship
EN ISO 14896:2009 Identical
DIN EN ISO 14896:2009-07 Identical
ISO 14896:2009 Identical
UNI EN ISO 14896 : 2009 Identical
BS EN ISO 14896:2009 Identical
UNE-EN ISO 14896:2009 Identical
SN EN ISO 14896 : 2010 Identical
I.S. EN ISO 14896:2009 Identical

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