EN ISO 3451-5:1996

SLOVENSKI STANDARD
01-maj-2000
3ROLPHUQLPDWHULDOL'RORþHYDQMHSHSHODGHO3ROLYLQLONORULG,62
Plastics - Determination of ash - Part 5: Poly(vinyl chloride) (ISO 3451-5:1989)
Kunststoffe - Bestimmung der Asche - Teil 5: Poly(vinylchlorid) (ISO 3451-5:1989)
Plastiques - Détermination du taux de cendres - Partie 5: Poly(chlorure de vinyle) (ISO
3451-5:1989)
Ta slovenski standard je istoveten z: EN ISO 3451-5:1996
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ISO
INTERNATIONAL
3451-5
STANDARD
First edition
1989-09-15
- Determination of ash -
Plastics
Part 5 :
Poly(vinyl chloride)
- Determination du taux de cendres -
Was fiques
Partie 5 : Poly(chlorure de vinyle)
Reference number
ISO 3451-5: 19891 E)
ISO 345%5:1989(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national Standards bodies (ISO member bodies). The work
of preparing International Standards is normally carried out through ISO
technical committees. Esch member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the
work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for approval before their acceptance
as International Standards by the ISO Council. They are approved in
accordance with ISO procedures requiring at least 75 % approval by the
member bodies voting.
International Standard ISO 3451-5 was prepared by Technical Committee
ISO/TC 61, Plastics.
ISO 3451 consists of the following Parts, under the general title
Plastics - Determination of ash:
- Part i: General methods
- Part 2: Polyalkylene terephthalates
- Part 3: Unplasticized cellulose acetate
- Part 4: Polyamides
- Part 5: Po/y(vinyl chloride)
0 ISO 1989
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Permission in writing from the publisher.
International Organization for Standardization
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Printed In Switzerland
ii
INTERNATIONAL STANDARD ISO 3451=5:1989(E)
- Determination of ash -
Plastics
Part 5 :
Poly(vinyl chloride)
- Poiy(viny1 chioride) evoives hydrogen
WARNING
chioride an thermal decomposition, and precautions
Calcination, with sulfuric acid treatment after com-
shouid be taken to avoid inhaiation of fumes.
bustion, i.e. by burning the substance and trans-
forming the residue into sulfates using concentrated
sulfuric acid and, finally, heating the residue at
1 Scope
850 “C until constant mass is reached. Should lead
compounds be present, method B is recommended.
This part of ISO 3451 specifies two methods for the
determination of the ash of poly(vinyl chloride). The
general procedures given in ISO 3453-1 are
4 Reagents (for method B only)
followed - method A (ash) or method B (sulfated
ash). These methods may be used for resins, com-
4.1 Suifuric acid, p 1,84 g/ml, of recognized ana-
positions and finished products.
lytical grade.
5 Apparatus
2 Normative reference
Apparatus specified in ISO 3451-1, and in particular:
The following Standard contains provisions which,
through reference in this text, constitute provisions
5.1 Crucibie of siiica or platinum, diameter of upper
of this part of ISO 3451. At the time of publication,
part 45 mm to 75 mm, height equal to the diameter.
the edition indicated was valid. All Standards are
The size shall be sufficient so that the crucible is no
subject to revision, and Parties to agreements based
more than half-filled by the test Portion.
on this patt of ISO 3451 ar
...