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ASTM D4273-18
Standard Test Method for Polyurethane Raw Materials: Determination of Primary Hydroxyl Content of Polyether PolyolsMore info
1.1 Carbon-13 Nuclear Magnetic Resonance Spectroscopy (13C NMR) measures the primary hydroxyl content of ethylene oxide (EO)-propylene oxide (PO) polyether polyols used in preparing flexible polyurethane foams. This method is best suited for polyether polyols with primary hydroxyl contents of 10 to 90 %.
| Author | ASTM |
|---|---|
| Editor | ASTM |
| Document type | Standard |
| Format | File |
| ICS | 83.080.20 : Thermoplastic materials |
| Number of pages | 7 |
| Replace | ASTM D4273-11 |
| Set | ASTMVOL0802 |
| Year | 2018 |
| Document history | ASTM D4273-11 |
| Country | USA |
| Keyword | ASTM 4273;ASTM D4273;ASTM D4273;10.1520/D4273-18 |