NEN EN ISO 14896 : 2009
Current
The latest, up-to-date edition.
PLASTICS - POLYURETHANE RAW MATERIALS - DETERMINATION OF ISOCYANATE CONTENT
12-01-2013
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)
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| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Current
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| 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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