DEAS 788:20 22 
ICS: 71.100.40  
 
1 
© EAC 2022                                                                                                                 Second  Edition 20 22  
 
DRAFT  EAST AFRICAN STANDARD  
 
Synthetic laundry detergent paste — Specification   
EAST AFRICAN COMMUNITY  
 
 DEAS 788:20 22 
ii © EAC  2022 – All rights reserved  
 Copyright notice  
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 DEAS 788:20 22 
© EAC 2022 – All rights reserved  iii 
 Contents  
1 Scope  ................................ ................................ ................................ ................................ .............  1 
2 Normative references  ................................ ................................ ................................ ...................  1 
3 Terms and definitions  ................................ ................................ ................................ ..................  1 
4 Requirements  ................................ ................................ ................................ ................................  2 
4.1 General requirements  ................................ ................................ ................................ ..................  2 
4.2 Specific requirements  ................................ ................................ ................................ ..................  2 
5 Packaging  ................................ ................................ ................................ ................................ ...... 2 
6. Labelling  ................................ ................................ ................................ ................................ ........  3 
7 Sampling  ................................ ................................ ................................ ................................ ....... 3 
Annex A (informative)  List of suggested builders and additives  ................................ ........................  4 
Annex B (normative)  Determination of moisture and volatile matter content  ................................ ... 5 
B.1 Principle  ................................ ................................ ................................ ................................ ........  5 
B.2 Apparatus  ................................ ................................ ................................ ................................ ...... 5 
B.3 Procedure  ................................ ................................ ................................ ................................ ...... 5 
B.4 Calculation  ................................ ................................ ................................ ................................ .... 5 
Annex C (normative)  Determination of matter insoluble in water  ................................ .......................  6 
C.1 Apparatus  ................................ ................................ ................................ ................................ ...... 6 
C.2 Reagents  ................................ ................................ ................................ ................................ ....... 6 
C.3 Procedure  ................................ ................................ ................................ ................................ ...... 6 
C.4 Calculation  ................................ ................................ ................................ ................................ .... 6 
Annex D (normative)  Determination of pH  ................................ ................................ .............................  8 
D.1 General  ................................ ................................ ................................ ................................ ..........  8 
D.2 Apparatus  ................................ ................................ ................................ ................................ ...... 8 
D.3 Reagents  ................................ ................................ ................................ ................................ ....... 8 
D.4 Procedure  ................................ ................................ ................................ ................................ ...... 8 
Annex E (normative)  Determination of Non -Detergent Organic Matter (NDOM)  ................................  9 
E.1 General  ................................ ................................ ................................ ................................ ..........  9 
E.2 Apparatus  ................................ ................................ ................................ ................................ ...... 9 
E.3 Reagents  ................................ ................................ ................................ ................................ ....... 9 
E.4 Procedure  ................................ ................................ ................................ ................................ ...... 9 
E.5 Calculation  ................................ ................................ ................................ ................................ .. 10 
Annex F (normative)  Sampling procedure for detergent paste  ................................ .........................  11 
F.1 General requirements  ................................ ................................ ................................ ................  11 
F.2 Scale of sampling  ................................ ................................ ................................ .......................  11 
F.3 Preparation of gross sampl es, test sample and reference sample  ................................ .............  12 
F.4 Number of tests  ................................ ................................ ................................ ..........................  12 
F.5 Criteria for conformity ................................ ................................ ................................ ................  12 
Bibliography  ................................ ................................ ................................ ................................ .............  13 
 
 
 
  DEAS 788:20 22 
iv © EAC  2022 – All rights reserved  
 Foreword  
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through  
harmonized standardization, trade barriers that are encountered when goods and services are exchanged within 
the Community will be removed.  
The Community has established an East African Standards Committee (EASC) mandated to develop and issue 
East Africa n Standards (EAS) and other deliverables. The Committee is composed of representatives of the 
National Standards Bodies in Partner States, together with the representatives from the public and private sector 
organizations in the community.  
East African St andards are developed through Technical Committees that are representative of key 
stakeholders including government, academia, consumer groups, private sector and other interested parties. 
Draft East African Standards are circulated to stakeholders through  the National Standards Bodies in the Partner 
States. The comments received are discussed and incorporated before finalization of standards, in accordance 
with the Principles and procedures for development of East African Standards.  
East African Standards  and other deliverables are subject to review, to keep pace with technological advances. 
Users of the East African Standards are therefore expected to ensure that they always have the latest versions 
of the standards they are implementing.  
The committee r esponsible for this document is Technical Committee EASC/TC 074, Surface active agents  
Attention is drawn to the possibility that some of the elements of this document may be subject of patent rights. 
EAC shall not be held responsible for identifying any o r all such patent rights.  
This second edition cancels and replaces the first edition (EAS 788:2013), which has been technically revised.  
 EAS 788:2013    
 
© EAC 2013 – All rights reserved  
  
 Synthetic laundry detergent paste — Specification  
1 Scope  
This Draft East African  standard specifi es the requirements , sampling  and test methods for synthetic laundry 
detergent pastes based predominantly on alkyl aryl sulphonates for hand and machine wash . 
2 Normative references  
The following referenced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenced document 
(including any amendments) applies . 
EAS 794, Determination of the microbial inhibition of cosmetic soap bars and liquid hand and body washes - 
Test method ,  
EAS 814 Determination of biodegradability of surfactants — Test method.  
ISO 673, Soap s — Determination of content of ethanol insoluble matter  
ISO 862 , Surface active agents — Vocabulary  
ISO 2271, Surface active agents — Detergents  — Determination of anionic active matter by manual or 
mechanical direct two -phase titration  procedure  
3 Terms and definitions  
For the purposes of this standard terms and definitions given  in ISO 862 and the following apply.  
ISO and IEC maintain terminological databases for use in standardization at the following addresses:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
 
synthetic detergent paste  
thick, soft, moist substance formulated for removing stains, brightening and softening laundry.  
 
 
  
2 © EAC  2022 – All rights reserved  
 4 Requirements  
4.1 General requirements  
4.1.1 The active ingredients used include  salt of alkylaryl sulphonic acid, soap and non -ionics.  The formulation 
may contain one or more of the builders or additives given in Annex A.  
4.1.2  The active ingredient used shall be biodegradable when tested according to EAS 814.  
4.1.3 The synthetic detergent paste  shall be free  from foreign matter and the components shall be 
homogeneously dispersed and shall not be separated.   
4.1.4 The synthetic detergent paste shall not give any objectionable  odour and shall have good cleaning and 
lathering properties.   
 
4.2 Specific requirements  
The synthetic detergent paste  shall comply with the specific requirements given in Table 1 when tested in 
accordance with the corresponding test method . 
Table 1  — Specific r equirements for synthetic  detergent p aste 
S/No. Characteristic  Requirement  Test method  
i.  Active ingredient, (on dry basis) % m/m, min.   18.0 ISO 2271  
ii.  Moisture and volatile matter content at 105 °C, %  m/m, 
max.  65 Annex B 
iii.  Matter insoluble in ethanol  (on dry basis) , % m/m, max.  80.0 ISO 673  
iv.  Matter insoluble in water, % m/m, max  5.0 Annex C 
v.  pH of 1 % solution (m/v) at 25  °C   2 °C 9 - 11 Annex  D 
vi.  Non-Detergent Organic Matter (NDOM),  (on dry basis)  
% m/m, max.  1.0 Annex E 
vii.  Phosphate (expressed as sodium tripoly -phosphate), % 
m/m, max   15  ISO 4313  
viii.  antibacterial activity a) To pass the test  EAS 794  
 
a)This test is only applicable for synthetic laundry detergent paste with  antibacterial claims  
 
5 Packaging  
Synthetic detergent paste  shall be pack aged in suitable well -closed containers/packages .  
The containers/packages (including the closures) shall not impart any contamination to the synthetic detergent 
paste and shall be strong enough to protect the content adequately during normal handling, transportat ion and 
storage.  
   
© EAC 2022 – All rights reserved  3 
 6. Labelling  
Each package  shall be legibly and indelibly labelled either in English, Kiswahili or French or combination or any 
other language as agreed to between the manufacturer and supplier with the following information:  
a) name of the product  as “synthetic laundry detergent paste ”; 
b) manufacturer’s name and physical address  
 NOTE  The name, physical address of the distributor/supplier and trade mark may be added as required  
c) batch or code number ; 
d)  list of ingredients  
e) net content ; 
f) country of origin ;  
g) declare if anti bacterial agent is incorporated;  
h) instructions for use ;  
i) date of manufacture and best before date ; and 
j) indicate mode of disposal of containers/packages  
7 Sampling  
Sampling shall be done in accordance with Annex F. 
 
 
 
 
 
 
 
 
 
 
 
   
4 © EAC  2022 – All rights reserved  
 Annex A  
(informative)  
 
List of suggested builders and additives  
The following is a list of suggested builders and additives:   
a) sodium carbonate;  
b) sodium sulphate;  
c) sodium carboxymethyl cellulose;  
d) sodium silicate;  
e) optical brighteners;  
f) lather boosters;  
g) hydrotropes;  
h) perfume;  
i) preservatives;  
j) chelating agents (sequestering agents);  
k) colourants;  
l) perborates;  
m) enzymes;  
n) bactericides;  
o) common salt;  
p) magnesium sulphate;  
q) Sodium tripolyphosphate (STPP);  
r) zeolites; and  
s) any other internationally accepted builder cleared by respective partner states bureaux of standards.  
 
 
 
 
 
  
© EAC 2022 – All rights reserved  5 
 Annex B  
(normative)  
 
Determination of moisture and volatile matter content  
B.1 Principle  
The moisture and volatile matter content are deter mined by oven method.  
B.2 Apparatus  
B.2.1  Porcelain or silica dish,  6 cm to 8 cm in diameter and 2 cm to 4 cm in depth  
B.2.2  Desiccator,  containing an efficient desiccant, such as phosphorus pentoxide  
B.2.3  Air-oven , preferably electrically heated, with te mperature control device  
B.3 Procedure  
Weigh accurately about 5 g of the material into a dry tarred dish, and dry to constant mass in air -oven at a 
temperature of 105 C 1 C.  Cool in a desiccator and weigh.  Constant mass shall be considered to have been 
attained when successive heating for one -hour period shows a difference of not more than 5 mg in the net loss 
in mass.  
B.4 Calculation  
The moisture and volatile matter content are expressed as follows:  
Moisture and volatile matter content (at 105 C), percent by mass =  
100−
01 0
mm m  
where  
m0 is the mass, in grams, of the material taken for test, and  
m1 is the mass, in grams, of the material upon drying  
 
 
 
 
 
 
 
  
6 © EAC  2022 – All rights reserved  
 Annex C  
(normative)  
 
Determination of matter insoluble in water  
C.1 Apparatus  
C.1.1 Beaker, 150-ml capacity  
C.1.2 Steam bath  
C.1.3 Buchner flask,  500-ml capacity, fitted with sintered glass filter funnel (porosity 4)  
C.1.4 Air-oven,  preferably electrically heated, with temperature control device  
C.1.5  Vacuum pump  
C.2 Reagents  
C.2.1  Ethyl alcohol,  freshly boiled, 96  % or higher (by volume)  
C.2.2  Distilled water  
C.3 Procedure  
C.3.1  Weigh accurately about 5 g of the material into a beaker, and digest with 50 ml of ethyl alcohol by heating 
on a steam bath for about 2 min. Stir and break up any hard lump with a glass rod flattened at one end.  
C.3.2  Allow the  solid matter to settle and decant the hot alcoholic solution through a dried and pre -weighed 
sintered glass filter fun nel fitted to a Buchner flask, to which suction is applied  
C.3.3  Repeat the alcoholic digestion in a similar manner with five further consecutive 30 ml portions of boiling 
ethyl alcohol. Filter each extract in turn through the same sintered glass funnel an d, finally, wash the residue 
several times with hot ethyl alcohol to remove all the alcohol soluble matter.  
C.3.4  Even after digestion with five 30 ml portions of boiling ethyl alcohol, the alcohol insoluble portion may 
sometimes be found to be sticky. In that case treat it further with more boiling ethyl alcohol until it is free from 
active matter and the alcohol insoluble portion is no longer sticky . 
C.3.5  After filtering and washing the residue thoroughly with hot ethyl alcohol, change the  receiver, extract the 
residue with successive portions of distilled water at about 60 °C, and wash the residue several times to remove 
all the water solubles.  
 
C.3.6  Dry the sintered glass funnel with the residue in an air -oven at a temperature of 105 °C  ± 2 °C for 1 h . 
Cool in a desiccator and weigh .  
 
C.3.7  Repeat the process in C.3.6 for 30 min until a constant weight is obtain ed. 
 
 
C.4 Calculation  
The m atter insoluble in water  is expressed as follows:  
Matter insoluble in water  (on dry basis) , % m/m = 100  𝑚2−𝑚1
𝑚×100
(100 −moisture )   
 
  
© EAC 2022 – All rights reserved  7 
 where  
m1 is the mass, in grams, of empty sintered glass filter funnel  
m2 is the mass, in grams, of sintered glass filter funnel with residue  
m is the mass, in grams, of material taken for the test.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
8 © EAC  2022 – All rights reserved  
 Annex D  
(normative)  
 
Determination of pH  
D.1 General  
pH determination shall be made in an acid free atmosphere.  
D.2 Apparatus  
D.2.1  pH meter, any standard electrometric instrument, equipped with a low sodium error glass electrode. 
The instrument shall be calibrat ed and standardized with standard buffer solution before use.  
D.2.2  Volumetric flask , 100 -ml capacity  
D.3 Reagents   
D.3.1  Distilled water  
Distilled water shall be boiled thoroughly or purged with carbon dioxide free air to remove carbon dioxide, and 
shall be protected with soda lime or soda asbestos while cooling and in storage. The pH of this water shall be 
between 6.2 and 7.2 at 30 °C. The residue on evaporation when heated at 105 °C for one hour shall not exceed 
0.5 mg/L.  
D.3.2  Standard buffer solutio n 
Any two suitable buffer solutions within the pH range of 9 to 11 at 30 °C for calibrating the pH meter  
D.4 Procedure  
Weigh 10 g   0.001 g material and transfer to a 1 -L volumetric flask. Partially fill the flask with distilled water 
and agitate until the sample  is completely dissolved. Adjust the temperature of the solution and the distilled 
water to 30 °C  0.5 °C, and fill to the calibration mark with distilled water. Stopper the flask, mix thoroughly, 
and allow the solution to stand at a temperature of 30  °C for 2 h prior to measuring the pH. Measure the pH of 
the solution using a glass electrode  at 25 °C ± 2 °C.  
 
 
 
 
 
 
 
 
  
© EAC 2022 – All rights reserved  9 
 Annex E  
(normative)  
 
Determination of Non-Detergent Organic Matter (NDOM)  
E.1 General  
The term non -detergent organic matter includes hydrocarbons, fatty alcohols and perfumes. Using petroleum 
ether and under the conditions prescribed, non -detergent organic matter only is extra cted leaving any 
alkylolamide present in the material.  
E.2 Apparatus  
E.2.1  Evaporating basin  
E.2.2  Separating funnels , 1 000 -ml capacity.  
E.2.3  Wide mouthed flat -bottomed flask , 200 -ml capacity  
E.2.4  Buchner flask , 500 -ml capacity, fitted with a sintered glass filter funnel (porosity 4)  
E.2.5  Fume hood or well ventilated room  
E.2.6   vacuum pump  
E.3 Reagents  
E.3.1 Ethyl alcohol, 50 %, 70 %. 90 % and 96% (by volume)  
E.3.2 Petroleum ether,  boiling range 40 °C to 60 °C non -volatile residue at 80 °C maximum 0.001%  
E.3.3 Acetone,  non-volatile residue at 80 °C maximum 0.001 %  
E.4 Procedure  
E.4.1 For the removal of inorganic salts , weigh accurately about 5 g of the material in a 150 -ml squat be aker. 
Extract with 50 -ml of hot 90 % ethanol by heating on the steam bath for about 2 min stirring and breaking up 
any hard lumps with a glass rod flattened at the end.  
E.4.2 Allow the solid matter to settle and decant the hot aIcoholic solution through a sinter ed glass filter funnel  
(porosity 4) fitted to a 500 -ml Buchner flask to which suction is applied. Repeat the extraction in a similar manner 
with five further consecutive 30 -ml quantities of boiling 90 % ethanol. Pass each extract in turn through the filter  
into the flask.  
E.4.3 Transfer quantitatively all the combined filtrate from the Buchner flask to a 1 -L separating funnel and rinse 
the flask four times with 40 -ml quantities of distilled water, transferring each wash in turn to  the separating 
funnel. Add  100-ml of petroleum ether, swirl gently to ensure adequate mixing and allow the two phases to 
separate. Run off the aqueous alcoholic layer into a second separat ing funnel, and extract with 75 -ml of 
petroleum ether. Repeat the extraction of the aqueous al coholic phase in the third sepa rating funnel with a 
further 75 -ml of petroleum ether. Combine the three ether extracts in the first separating funnel. Rinse each of 
the two empty funnels with a few millilitres petroleum ether and add the rinsing to the com bined ether extracts.  
E.4.4 Wash the combined ether extracts and rinsing (see E.4. 3) with four successive 50 -ml portions of 70 % 
ethyl alcohol, shaking and removing the alcoholic phase each time. Transfer the ether layer in stages to a pre-
weighed  flask and recover the solvent. Add 10 -ml of acetone and evaporate off the solvent using a stream of 
nitrogen. Rotate the flask on a steam bath during the operation. Cool the flask to about 60 °C to 65 °C, gently 
blow out the last traces of solvent with a cu rrent of dry air, cool in a desiccator and weigh.   
10 © EAC  2022 – All rights reserved  
 E.5 Calculation  
The n on- detergent organic matter  shall be expressed as follows:  
 
Non- detergent organic matter  (on dry basis), % m/m = 100  𝑚2−𝑚1
𝑚×100
(100 −moisture ) 
 
 
where  
m1 is the mass, in grams, of empty flask  
m2 is the mass, in grams, of the flask  with residue  
m is the mass, in grams, of material taken for the test.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
© EAC 2022 – All rights reserved  11 
 Annex F 
(normative)  
 
Sampling procedure for detergent  paste  
F.1 General requirements  
F.1.1  In drawing preparing, sto ring and handling samples, the precautions in F.1.2 – F.1.7 shall be observed.  
F.1.2 Samples shall not be taken from place s exposed to damp air, dust or soot.  
F.1.3 The sampling instruments shall be clean and dry when used.  
F.1.4 The samples, the material being sampled, the sampling instruments and the containers for samples shall 
be protected from adventitious contamination.  
F.1.5 The samples shall be placed in clean and dry glass containers. The sample containers shall be of such  a 
size that they are almost completely filled by the sample.  
F.1.6 Each container shall be sealed airtight after filling, and marked with full details of sampling  which include , 
date of sampling, batch or code number, name of manufacturer, and other impor tant particulars of the 
consignment.  
F.1.7 The samples shall be stored in such a manner that the temperature of the material does not vary unduly 
from the normal temperature, and that they are protected from light.  
F.2 Scale of sampling  
F.2.1 In a single c onsignment, all the packages containing non -soapy detergents of the same type and form, 
and drawn from the same batch of manufacture, shall constitute a lot. If the consignment consists of packages 
containing non -soapy detergents of different types and for ms, then the packages containing non -soapy 
detergents of the same type form and batch of manufacture shall be grouped together, and such group shall 
constitute a separate lot.  
F.2.2 For ascertaining the conformity of the lot to the requirements prescribed in this standard, tests shall be 
carried out on each lot separately. The number (n) of packages to be selected for drawing the samples shall 
depend upon the size (N) of the lot and sha ll be in accordance with Table F.1 
Table.1  — Scale of sampling  
No. of pa ckages in the lot  
(N) No. of packages to be selected  
(n) 
4 to 15  3 
16 to 40  4 
41 to 65  5 
66 to 110  7 
111 and above  10 
NOTE  When the size of  the lot is three  packages or less, the number of containers to be selected and 
the criteria for judging the conformity of the lot to the specifications should be as agreed on between the 
purchaser /inspector  and the supplier.  
 
F.2.3 The packages shall be selected at random  and to ensure randomness of selection, a random number 
table shall be used. In case such tables are not available, the procedure given below  may be adopted.   
12 © EAC  2022 – All rights reserved  
 Starting from any package, count all the packages in one order as 1, 2, 3,…, up to r and so on, where r is the 
integral part of N/n, (N being the lot size and n the number of packages to be selected). Every rth package thus 
counted shall be withdrawn to gi ve a sample for the purposes of test.  
F.3 Preparation of gross samples, test sample and reference sample  
F.3.1 Gross sample  
From each one of the packages selected as in F.2.2, draw at random one or more containers. The material in 
the containers so chosen shall be nearly thrice the quantity required for purposes of test as indicated in F.4. 
The material from the containers selected in F.3.1.2 shall be mixed by thoroughly t o give the gross sample for 
the package.  
F.3.2 Test sample  
F.3.2.1  Segregate carefully the gross samples of paste . From the gross representing each form of synthetic 
detergent take a small but equal quantity of material and mix thoroughly into a composite sample which should 
be of a size sufficient to carry out triplicate testing for all the characteristics specified under F.4. The composite 
samples representing each form and type of synthetic detergent shall be divided into three equal parts, one for 
the p urchaser /inspector , another for the supplie r, and the third for the reference . 
F.3.2.2  The remaining portion of the material in each of the gross samples shall be divided into three equal 
pans, each forming an individual sample. One set of individual sampl es, representing the n selected packages 
shall be for the purchaser /inspector , another for the supplier, and the third for refere nce. 
F.3.2.3  AII the composite and individual samples shall be transferred to separate containers. These containers 
shall then be sealed airtight with stoppers, and labelled with full particulars of identification given in F.1.6. 
F.3.3 Refere nce samples  
F.3.3.1  The refere nce samples shall consist of a composite sample and a set of individual samples. All the 
containers shall bear the seals of both the purchaser /inspector  and the supplier, and shall be kept at a place 
agreed to between the two parties.  
F.3.3.2  Refere nce samples shall be used in case of any dispute between the purchaser /inspector  and the 
supplier.  
F.4 Number of tests  
F.4.1 Tests for the determination of active ingredient shall be performed on each of the individual samples.  
F.4.2 Tests for the determination of other requirements  specified in Table 1 shall be conducted on the 
composite sample.  
F.5 Criteria for con formity  
F.5.1 For individual samples  
F.5.1.1 For the characteristic, which has been determined on the individual sample, the mean (X) and the 
range (R) of test results shall be calculated as follows:  
()
resultstestof Numberresultstestof SumMean =X
 
Range ( R) is the difference between the maximum and the minimum value of test results.   
© EAC 2022 – All rights reserved  13 
 F.5.1.2 If the specification limit for the characteristic is given as a minimum, the value of the expression (
X
- KR) shall be calculated from the relevant test results (see also F.5.1.5). If the value so obtained is greater 
than or equal to the minimum limit, the lot shall be declared as conforming to the requirement for the 
characteristic.  
F.5.1.3 If the specification limit for the characteristic is given as a maximum, the value of the e xpression (
X
+ KR) shall be calculated from the relevant test results (see also F.5.1.5). If the value so obtained is less than 
or equal to the maximum limit, the lot shall be declared as conforming to the requirement for the characteristic.  
F.5.1.4 If the characteristic has two -sided specification limits, then the values of the expression (
X  ± KR) 
shall be calculated from the relevant test results (see also F.5.1.5). If the value so obtained lies between the 
two specification limits, the lot shall be declar ed as conforming to the requirement for the characteristic.  
F.5.1.5 The value of the factor K referred to in F.5.1.2 - F.5.1.4 shall be c hosen in accordance with Table 
F.2, depending upon the acceptable quality level, that is, the percentage, of non-conforming packages that may 
be tolerated reasonably.  
Table F.2 — Value of 'K' for achieving different acceptable quality levels  
Acceptable quality level  Value of 'K'  
Not more than 3.0 % defectives  0.4 
Not more than 1.5 % defectives  0.5 
Not more than 0.5 % defectives  0.6 
 
F.5.2 For composite sample  
For declaring the conformity of the lot to the requirements of all the remaining characteristics determined on the 
composite sample, the test results for each one of the characteristics shall satisfy the relevant requirement given 
in Table 1 of this standard . 
 
 
 
 
 
 
 
 
 
 
Bibliography  
EAS 788: 20 13 Synthetic detergent paste – Specification