SIST EN ISO 4615:2000

SLOVENSKI STANDARD
SIST EN ISO 4615:2000
01-maj-2000
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Plastics - Unsaturated polyesters and epoxide resins - Determination of total chlorine
content (ISO 4615:1979)
Kunststoffe - Ungesättigte Polyester und Epoxidharze - Bestimmung des
Gesamtchlorgehaltes (ISO 4615:1979)
Plastiques - Résines de polyesters non saturés et époxydes - Détermination de la teneur
totale en chlore (ISO 4615:1979)
Ta slovenski standard je istoveten z: EN ISO 4615:1999
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
83.080.10 Duromeri Thermosetting materials
SIST EN ISO 4615:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4615:2000

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SIST EN ISO 4615:2000

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SIST EN ISO 4615:2000

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SIST EN ISO 4615:2000
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.MEXJIYHAPO~HAR OPTAHI’l3ALU4R fl0 CTAHAAPTt43A~MM~ORGANISATION INTERNATIONALE DE NORMALISATION
Plastics - Unsaturated polyesters and epoxide resins -
Determination of total chlorine content
Plas tiques - Rksines de polyesters non saturb et Kapoxydes - Dbtermina tion de Ia teneur totale en chlore
First edition - 1979-12-01
UDC 678.674 + 678.685 : 543.848 Ref. No. ISO 46151979 (EI
Bescriptors : plastics, Polyester resins, epoxy resins, Chemical analysis, determination of content, chlorine, combustion analysis.
Price based on 5 pages

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SIST EN ISO 4615:2000
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO member bodies). The work of developing
International Standards is carried out through ISO technical committees. Every
member body interested in a subject for which a technical committee has been set
up has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
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.
International Standard ISO 4615 was developed by Technical Committee
ISO/TC 61, Plastics, and was circulated to the member bodies in August 1978.
lt has been approved by the member bodies of the following countries :
South Africa, Rep. of
Austria Hungary
Belgium Iran Sweden
Bulgaria I taly Switzerland
Canada Japan Turkey
Czechoslovakia Korea, Rep. of USA
Egypt, Arab Rep. of Mexico USSR
Netherlands Yugoslavia
Finland
New Zealand
Germany, F.R.
Romania
G reece
Th e member body o f the following country expressed disapproval of the document
on technical grounds
United Kingdom
0 Internationaf Organkation for Standardization, 1979 l
Printed in Seitzerland

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SIST EN ISO 4615:2000
INTERNATIONAL STANDARD ISO 4615-1979 (E)
Plastics - Unsaturated polyesters and epoxide resins -
Determination of total chlorine content
1 SCOPE AND FIELD OF APPLICATION 3.3 Nitrit acid, concentrated, p = 1,42 g/mI.
This International Standard specifies two methods for the
3.4 Sodium Peroxide, granulated.
determination of the total chlorine content of unsaturated
Polyesters and epoxide resins, namely :
3.5 Starch or sucrose as combustion aids.
-
method A : combustion in a bomb;
For method B only :
-
method B : combustion in a flask.
3.6 Oxygen, gaseous.
NOTES
1 Determination of combined chlorine and bromine content or
3.7 Sodium nitrate.
is also possible by these methods. The
bromine content only,
appropriate procedure shall be agreed upon by the purchaser and
the supplier.
3.8 Potassium hydroxide Solution, 100 g/l.
2 These methods are not applicable to the determination of total
chlorine in epoxy resins containing chlorine as an impurity.
3.9 Hydrogen peroxide Solution, 300 g/l.
2 PRINCIPLE
4 APPARATUS
Oxidation of a test Portion with sodium peroxide (method A)
or gaseous Oxygen (method B) followed by electrometric
or volumetric titration of the resulting chlorides. 4.1 Balance, to weigh to an accuracy of 0,000 1 g.
4.2 Equipment for Volhard titration or for electrometric
3 REAGENTS
titration, with a burette having a capacity and accuracy
appropriate to the Chosen method (A or B).
During the analysis, use only reagents of known analytical
quality, and only distilled water or water of at least equival-
For method A only :
ent purity.
4.3 Combustion bomb (for example Parr bomb or another
3.1 Silver nitrate, Standard volumetric Solution,
bomb which gives the same results), electrically fired or
c(AgN03) = 0,l moV1.t )
gas-fired. A suitable gas-fired bomb is shown in figure 1.
NOTE - For testing resins of low total chlorine content [less than
2 % (m/m)], a Standard volumetric Solution of silver nitrate,
4.4 Nickel crucible with lid, to fit into the bomb (gas-
c(AgNO$ = 0,05 mol/l,*) may be used.
fired). Suitable dimensions are : diameter 25 mm, height
40 mm.
3.2 Nitrit acid, 126 g/l Solution.
4.5 Safety oven.
For method A only :
1) H itherto expressed as 0,l N Standard volumetric solution.
2) Hitherto expressed as 0,435 N Standard volumetric Solution.

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SIST EN ISO 4615:2000
ISO 4615-1979 (E)
Approximate dimensions in millimetres
Across flats 30
lL]TRiveted handle
Spu n nicke1 cruci ble
w+---Across flats 30
Steel bomb
FIGURE 1 - Combustion bomb, gas-fired type
(for method A)
FIGURE 2 - Flask for Oxygen combustion with platinum
wire attached to stopper
(for method 6)
2

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SIST EN ISO 4615:2000
ISO 46154979 (E)
4.6 Beaker, of capacity 600 ml. The heating of the bomb is of extreme importante because
underheating will Cause incomplete Oxidation of the organic
For method B only :
matter and low chlorine results, whereas overheating ,may
Cause darnage to the bomb cup and even an explosion.
4.7 Round-bottomed flask of capacity 500 ml, with head
These bombs are not intended to operate at a red heat,
for Oxygen combustion (see figure 2). A platinum wire 1 mm
but there is no serious danger involved in this method
in diameter and 120 mm long in the shape of a tapered
of Oxidation provided that the proper charges are used in
spiral is attached to the stopper, a suitable spiral being
a bomb that is in satisfactory condition, and that the proper
15 mm in diameter and 15 mm long. lt is recommended
heating technique is used.
that metal gauze be wrapped around the flask for safety or
that a safety tage be used.
Discard the bomb if the sides or bottom become visibly
swollen, or if the interior surfaces become worn or corroded
NOTE -A safety bu Ib tan be fitted to the flask to permit expansion
of the gases to reduce the hazard.
at any Point to an inside diameter 1,5 % below the original
value.
4.8 Filter Paper, free from halogens and ash.
to read
lt is essential car ,efuIly the ma nuf actu rer’s instruc-
tions, particu larly wi th refere lnce to safety precautions.
4.9 Adhesive tape of cellulose acetate or regenerated
cellu lose, coated with polyvinyl acetate, of width 30 mm.
6.1.2.3 Cool the bomb. Open it and,
...