SIST EN ISO 2871-2:1997

Surface active agents - Detergents - Determination of cationic-active matter content - Part 2: Cationic-active matter of low molecular mass (between 200 and 500) (ISO 2871-2:1990)

Tenside - Waschmittel - Bestimmung der kationaktiven Substanz - Teil 2: Kationaktive Substanz niedriger Molmasse (zwischen 200 und 500) (ISO 2871-2:1990)

Dieser Teil von ISO 2871 legt ein Verfahren fest zur Bestimmung niedrigmolekularer kationaktiver Substanz, wie z.B. von Monoaminen, Aminoxiden, quaternären Ammoniumverbindungen und Alkylpyridiniumsalzen, die eine Hauptkettemit 10 bis 22 Kohlenstoffatomen und nicht mehr als 6 weitere Kohlenstoffatome imKation enthalten. Das Verfahren ist auch für andere kationaktive Substanzen geeignet. Das Verfahren ist anwendbar auf Feststoffe oder wässrige Lösungen der Aktivsubstanz.

Agents de surface - Détergents - Détermination de la teneur en matiere active cationique - Partie 2: Matiere active cationique a faible masse moléculaire (entre 200 et 500) (ISO 2871-2:1990)

Površinsko aktivne snovi - Detergenti - Določevanje kationsko aktivnih snovi - 2. del: Nizko molekularne kationsko aktivne snovi (med 200 in 500) (ISO 2871-2:1990)

General Information

• Status: Withdrawn
• Publication Date: 30-Nov-1997
• Withdrawal Date: 18-Aug-2010
• ICS: 71.100.40 - Surface active agents
• Technical Committee: KDS - Cosmetics, chemical disinfectants and surface active agents
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 12-Aug-2010
• Due Date: 04-Sep-2010
• Completion Date: 19-Aug-2010
• Ref Project: EN ISO 2871-2:1994 - Surface active agents - Detergents - Determination of cationic-active matter content - Part 2: Cationic-active matter of low molecular mass (between 200 and 500) (ISO 2871-2:1990)

Relations

• Replaced By: SIST EN ISO 2871-2:2010 - Surface active agents - Detergents - Determination of cationic-active matter content - Part 2: Cationic-active matter of low molecular mass (between 200 and 500) (ISO 2871-2:2010)
• Effective Date: 01-Sep-2010
• Replaced By: SIST EN ISO 2871-2:2010 - Surface active agents - Detergents - Determination of cationic-active matter content - Part 2: Cationic-active matter of low molecular mass (between 200 and 500) (ISO 2871-2:2010)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 2871-2:1997
01-december-1997
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Surface active agents - Detergents - Determination of cationic-active matter content -
Part 2: Cationic-active matter of low molecular mass (between 200 and 500) (ISO 2871-
2:1990)
Tenside - Waschmittel - Bestimmung der kationaktiven Substanz - Teil 2: Kationaktive
Substanz niedriger Molmasse (zwischen 200 und 500) (ISO 2871-2:1990)
Agents de surface - Détergents - Détermination de la teneur en matiere active cationique
- Partie 2: Matiere active cationique a faible masse moléculaire (entre 200 et 500) (ISO
2871-2:1990)
Ta slovenski standard je istoveten z: EN ISO 2871-2:1994
ICS:
71.100.40 Površinsko aktivna sredstva Surface active agents
SIST EN ISO 2871-2:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2871-2:1997

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SIST EN ISO 2871-2:1997

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SIST EN ISO 2871-2:1997

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SIST EN ISO 2871-2:1997
INTERNATIONAL
2871-2
STANDARD
First edition
19904 2-l 5
Corrected and reprinted
1991-12-15
Surface active agents - Detergents -
Determination of cationic-active matter
content -
Part 2:
Cationic-active matter of low molecular mass
(between ZOO and 500)
Agents de surface - U&ergents - Determination de la teneur en
mati&e active cationique -
Partie 2: Mati&e active cationique 3 faible masse moI&ulaire (entre 200
et 500)
-------.
Reference number
ISO 2871-2:1990(E)

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SIST EN ISO 2871-2:1997
ISO 287%2:1990(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 voting. Publication as an Inter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard ISO 2871-2 was prepared by Technical Committee
ISO/TC 91, Surface active agents.
ISO 2871 consists of the following Parts, under the general title Surface
Determination of cationic-active matter
active agents - Detergents -
content:
- Part 1: High-molecular-mass cationic-active matter
- Part 2: Cationic-active matter of low molecular mass (between 200
and 500)
0 ISO 1990
All rights reserved. No part of this publication may be reproduced or utilized in any form
or by any means, eleetronic or mechanical, including photocopying and microfilm, without
Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed In Switzerland
ii

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SIST EN ISO 2871-2:1997
INTERNATIONAL STANDARD ISO 287%2:1990(E)
Surface active agents - Detergents - Determination of
cationic-active matter content -
Part 2:
Cationic-active matter of low molecular mass (between 200
and 500)
tripolyphosphate, Perborate, silicate, etc., do not in-
1 Scope
terfere! but bleaching agents other than Perborate
shall be destroyed before the analysis, and the
This part of ISO 2871 specifies a method for the de-
Sample shall be completely soluble in water.
termination of low-molecular-mass cationic-active
This part of ISO 2871 should be read in conjunction
materials such as monoamines, amine oxides,
with ISO 2271.
quaternary ammonium compounds and alkyl-
pyridinium salts which have a main chain of 10 to
22 carbon atoms and not more than 6 other carbon
atoms in the cation.
2 Normative references
The method is also suitable for other cationic-active
materials.
The following Standards contain provisions which,
through reference in this text, constitute provisions
The method is applicable to solids or to aqueous
of this part of ISO 2871. At the time of publication,
solutions of the active material. The relative mol-
the editions indicated were valid. All Standards are
ecular mass of the cationic-active matter shall be
subject to revision, and Parties to agreements based
known or previously determined if its content is ex-
on this part of ISO 2871 are encouraged to investi-
pressed as a percentage by mass. If more than one
gate the possibility of applying the most recent edi-
type of cationic-active material is present, an esti-
tions of the Standards indicated below. Members of
mate of average relative molecular mass may be
IEC and ISO maintain registers of currently valid
used.
International Standards.
The method is not applicable if anionic and/or am-
ISO 385-1:1984, Laboratory glassware - Burettes -
photeric surface active agents are present.
Part 1: General requirements.
NOTE 1 Low relative molecular mass sulfonates of
ISO 607:1980, Surface acfive agents and detergents
toluene and xylene present as hydrotropes do not inter-
- Methods of Sample division.
fere when present in concentrations up to and including
15 % (m/rn) with respect to the active material. At higher
levels, their influence should be evaluated in each par-
ISO 1042: 1983, Laboratory qlassware - One-mark
c
ticular case.
volumetric f7asks.
Non-ionic surface active agents, soap, Urea and the ISO 2271:1989, Surface active agents - Detergents
salts of (ethylenedinitrilo)tetraacetic acid do not in- - Determination of anionic-active matter by manual
terfere. or mechanical direct two-Phase titration procedure.
Typical inorganic components of detergent formu-
ISO 3696:1987, Water for analytical laboratory use -
lations, such as sodium chloride, sulfate, borate,
Specification and test methods.

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SIST EN ISO 2871-2:1997
ISO 2871=2:1990(E)
Add a few drops of ethanolic phenolphthalein sol-
3 Principle
ution (concentration 10 g/l), and titrate the Solution
with sodium hydroxide Solution c(NaOH) = 1 mol/l.
The cationic-active matter in a Sample is titrated in
a two-Phase (aqueous chloroform) System against a
Carry out a blank test by titrating 25 ml of the
Standard anionic surface-active agent in the pres-
1 mol/1 sulfuric acid Solution with the 1 mol/1 sodium
ence of an indicator consisting of mixed anionic and
hydroxide Solution.
cationic dyes. The cationic surface-active agent
present in the Sample initially reacts with the anionic
Calculate the purity, Z, expressed as a percentage
dye to form a salt which dissolves in the chloroform
by mass, of the sodium lauryl sulfate using the for-
layer, imparting a blue colour to this layer. During
mula
the titration, the anionic surface-active agent dis-
places the anionic dye and, at the end Point, forms
28,84( V, - V,)c,
----
a salt with the cationic dye, imparting a greyish-pink
9
colour to the chloroform layer.
where
...