BS EN ISO 15512:2016
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Plastics. Determination of water content
Hardcopy , PDF
21-06-2022
English
30-11-2016
Foreword
Introduction
1 Scope
2 Normative references
3 Method A - Extraction with anhydrous methanol
4 Method B1 - Water vaporization using a heating tube oven
5 Method B2 - Water vaporization using a heated sample vial
6 Method C - Manometric method
7 Test report
Annex A (informative) - Alternative sample preparation
methods and titration methods
Annex B (informative) - Selection of the optimum
heating temperature for the water
content determination
Annex C (normative) - Determination of the water
content of a water standard
Bibliography
Describes methods for the determination of the water content of plastics in the form of powder, granules, and finished articles.
Committee |
PRI/21
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DevelopmentNote |
Renumbers and supersedes BS ISO 15512. Supersedes 96/125222 DC and BS EN ISO 960. (01/2004) Supersedes 07/30144836 DC. (07/2009) Supersedes 13/30266500 DC. (10/2014)
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DocumentType |
Standard
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Pages |
36
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PublisherName |
British Standards Institution
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Status |
Superseded
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SupersededBy | |
Supersedes |
1.1 This International Standard specifies methods for the determination of the water content of plastics in the form of powder, granules, and finished articles. These methods do not test for water absorption (kinetics and equilibrium) of plastics as measured by ISO62 . Method A is suitable for the determination of water content as low as 0,1%with an accuracy of 0,1%. Method B and Method C are suitable for the determination of water content as low as 0,01%with an accuracy of 0,01%. Water content is an important parameter for processing materials and has to remain below the level specified in the appropriate material standard. 1.2 Four alternative methods are specified in this International Standard. Method A is an extraction method using anhydrous methanol followed by a Karl Fischer titration of the extracted water. It can be used for all plastics and is applicable to granules smaller than 4mm×4mm×3mm. The method can also be used for, e.g. prepolymer materials in the form of a powder that are insoluble in methanol. Method B1 is a vaporization method using a tube oven. The water contained in the test portion is vaporized and carried to the titration cell by a dry air or nitrogen carrier gas, followed by a Karl Fischer titration of the collected water. It can be used for all plastics and is applicable to granules smaller than 4mm×4mm×3mm. Method B2 is a vaporization method using a heated sample vial. The water contained in the test portion is vaporized and carried to the titration cell by a dry air or nitrogen carrier gas, followed by a Karl Fischer titration of the collected water. It can be used for all plastics and is applicable to granules smaller than 4mm×4mm×3mm. Method C is a manometric method. The water content is determined from the increase in pressure, which results when the water is evaporated under a vacuum. This method is not applicable to plastic samples containing volatile compounds, other than water, in amounts contributing significantly to the vapour pressure at room temperature. Checks for the presence of large amounts of volatile compounds are to be carried out periodically, for example by gas chromatography. Such checks are particularly required for new types or grades of material.
Standards | Relationship |
UNI EN ISO 15512 : 2014 | Identical |
DIN EN ISO 15512:2017-03 | Identical |
ONORM EN ISO 15512 : 2017 | Identical |
EN ISO 15512:2016 | Identical |
NF EN ISO 15512:2017 | Identical |
NEN EN ISO 15512 : 2016 | Identical |
EN ISO 15512:2019 | Identical |
DIN EN ISO 15512:2016-06 (Draft) | Identical |
I.S. EN ISO 15512:2016 | Identical |
NBN EN ISO 15512 : 2014 | Identical |
NS EN ISO 15512 : 2016 | Identical |
ISO 15512:2016 | Identical |
UNE-EN ISO 15512:2017 | Identical |
SN EN ISO 15512 : 2017 | Identical |
ISO 1628-1:2009 | Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles |
ISO 1628-5:1998 | Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 5: Thermoplastic polyester (TP) homopolymers and copolymers |
ISO 1628-6:1990 | Plastics — Determination of viscosity number and limiting viscosity number — Part 6: Methyl methacrylate polymers |
ISO 1628-3:2010 | Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 3: Polyethylenes and polypropylenes |
ISO 307:2007 | Plastics Polyamides Determination of viscosity number |
ISO 62:2008 | Plastics Determination of water absorption |
ISO 1628-2:1998 | Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 2: Poly(vinyl chloride) resins |
ISO 1628-4:1999 | Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 4: Polycarbonate (PC) moulding and extrusion materials |
ISO 760:1978 | Determination of water Karl Fischer method (General method) |
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