ISO 307:2007
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Plastics — Polyamides — Determination of viscosity number
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15-05-2007
09-04-2025
ISO 307:2007 specifies a method for the determination of the viscosity number of dilute solutions of polyamides in certain specified solvents.
For pure polyamides or polyamides containing additives that do not interfere with the viscosity measurement, the determination of the viscosity number of a polyamide provides a measure of the molecular mass of the polymer. The viscosity number of pure polyamides or polyamides which contain additives that do not interfere with the viscosity measurement can be converted from one solvent to another.
The viscosity number of polyamides containing additives that do interfere with the viscosity measurement is specific to the solvent used and the material composition. In this case, the measured viscosity number cannot be converted from one solvent to another.
The method is applicable to the polyamides designated PA 46, PA 6, PA 66, PA 69, PA 610, PA 612, PA 11, PA 12, PA 6T/66, PA 6I/6T, PA 6T/6I/66, PA 6T/6I, PA 6I/6T/66 and PA MXD6, as well as to copolyamides, compounds of polyamides and other polyamides that are soluble in one of the specified solvents under the specified conditions.
The method is not applicable to polyamides produced by anionic polymerization of lactams or produced with cross-linking agents; such polyamides are normally insoluble in the specified solvents.
| Committee |
ISO/TC 61/SC 9
|
| DevelopmentNote |
DRAFT ISO/DIS 307 is also available for this standard. (10/2017)
|
| DocumentType |
Standard
|
| Pages |
33
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| JIS K 6933:2013 | Identical |
| I.S. EN ISO 307:2007 | Identical |
| NS EN ISO 307 : 2007 AMD 1 2013 | Identical |
| BS EN ISO 307 : 2007 | Identical |
| NF EN ISO 307 : 2007 AMD 1 2013 | Identical |
| DIN EN ISO 307:2013-08 | Identical |
| NEN EN ISO 307 : 2007 AMD 1 2013 | Identical |
| PN EN ISO 307 : 2009 AMD 1 2013 | Identical |
| DIN EN ISO 307:2007-08 | Equivalent |
| BS 2782:1970 | Similar to |
| BS 2782-7 Method 733A:1991 | Corresponds |
| UNE-EN ISO 307:2007 | Identical |
| NFT 51 019 : 1985 | Identical |
| DIN 53727:1980-01 | Similar to |
| NBN EN ISO 307 : 2007 AMD 1 2013 | Identical |
| BS 2782-7.733A(1996) : 1996 AMD 9928 | Identical |
| NEN ISO 307 : 1985 | Identical |
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