DEAS 1142 : 2023 
ICS 71.100 .40 
© EA C 2023                                                                                                                       First Edition 2023 
DRAFT EAST AFRICAN STANDARD  
Liquid glass cleaner  — Specification   
 
EAST AFRICAN COMMUNITY  
 
 
 
 
 
 
   
  DEAS 1142 : 2023 
ii © EAC  2023 – All rights reserved  
 Copyright notice  
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© East African Community  2023 — All righ ts reserved  
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Reproduction for sales purposes may be subject to royalty payments or a licensing agre ement.  
Violators may be p ersecuted  DEAS 1142 : 2023 
© EAC 2023 – All rights reserved  iii 
 Foreword  
Developm ent of the  East Af rican 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 
harm onized standardization, trade barriers that are enco untered wh en goods  and services are exchanged 
within the Community will be removed.  
In order to achieve this objective, the Community established an East African Standards Committee mandated 
to develop a nd issue East African Standards.   
The Committee is c omposed of  represe ntatives of the National Standards Bodies in Partner States, together 
with the representatives from the private sectors and consumer organizations. Draft East African Standards 
are circu lated to stakeholders through the National Standards  Bodies in  the Par tner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance with the procedures 
of the Community.  
East African Standards are subject  to review, to keep pace with technological advances . Users of  the Eas t 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
DEAS 1142 :2023 was prepared by the Technical C ommittee Technical Committee EASC/TC 074, Surface 
active age nts 
Attent ion 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 or all such patent right s. 
 
 DRAFT EAST AFRICAN STANDARD  DEAS 1142 :2023 
 
© EAC 2023 – All rights reserved  1 
 Liquid glass cleaner  — Specification  
1 Scope  
This Draft  East African Standard prescribes the requirements, sampling and test methods for liquid glass 
cleaner .  
2 Norm ative references  
The following referenced documents are indispensable for the application of this document . For dated 
references, only  the edit ion cited applies. For undated references, the latest edition of the referenced 
document (including any amendment s) applies.  
ASTM D -56, Standard Test Method for Flash Point by Tag Closed Cup Tester  
 
EAS 814,  Determinati on of biodegradability  of surfactants  —Test method  
ISO 862, Surface active agents  — Vocabulary  
ISO 4316 , Surface active agents - Determination of pH o f aqueous solutions - Potentiometric method  
 
ISO 4317 , Surface -active agents and detergents — Determinatio n of wat er content — Karl Fischer met hod 
 
3 Terms and definitions  
For th e purposes of this document, the terms and definitions given in ISO 862  and the following apply.  
ISO and IEC maintain terminological databases  for use in stan dardization at the following addresses:  
— ISO Online b rowsing pla tform: available at http://www.iso.org/obp  
 
biodegradable  
capable of decomposing by microorganisms under natural conditions (aerobic and/o r anaerobic)   
4 Requirem ents 
4.1 General requirements  
4.1.1  The liquid glass cl eaner shall be : 
a) clear and homogenous ; 
b) stable under ambient conditions of storage and handling ;  
c) capable for smooth, uniform and easy app lication ; and  
d) free from toxic ingredients  
 
 DEAS 1142 :2023 
2 © EAC  2023 – All rights reserved  
 4.1.2 The liquid glass cleaner shall not:  
 
a) impart stain to glass surfaces ; and 
b) have injurious effect on the personnel when used for  its intended  purpose . 
 
4.1.3 The liquid glass cleaner may be coloured.  
 
 
4.2 Specific requirements  
4.2.1  The liquid glass  cleaner shall comply wit h the specific requirements given in Table 1 when tested in  
accordance with the test method s specified therein . 
Table  1 — Specific requirements for liquid glass cleaner  
S/No. Parameter  Requ irement  Test method  
i)  Cleaning efficiency  To pass  test  Annex A  
ii)  Corrosion or discolouration  To pass test  Annex B 
iii)  Water cont ent, % (m/m), max  88.0  ISO 4317  
iv)  Flash point , ºC, min  27.0 ASTM D56  
v)  pH 6.5 – 10.0 ISO 4316  
vi)  Non-volatile matters content, % (m/m), max  1.0 Annex C 
vii)  Biodegradability  To pass test  EAS 814  
 
5 Packaging   
The liquid glass clean er shall be pack aged in a suitable, we ll-closed container to protect the integrity of the 
product during transportation , handling  and s torage . 
6 Labelling  
Each container and bulk package shall be securely closed , legibly and indelibly  labelled in English and/or any 
other of ficial language (French, Kiswahili, etc) used in the importing East African Partner State  with the 
following information:  
a) name of the product as "glass  cleaner ”; 
b) manufacturer’s na me and physic al address;  
c) batch or code number;  
d) net content ; 
e) list of ingredie nts 
f) country of ori gin; 
g) instructions for stora ge, use and disposal ; DEAS 1142 :2023 
© EAC 2023 – All rights reserved  3 
 h) date of manufacture ”; and  
i) best before date . 
j) safety precautions/warning  
 
NOTE  The name, physical address of the distributor/supplier and trade mark may be added.  
7 Sampling  
Samplin g shall be do ne in accorda nce with Annex D. DEAS 1142 :2023 
4 © EAC  2023 – All rights reserved  
 Annex A  
(normative)  
 
Determination o f cleaning efficiency  
A.1 Apparatus  
A.1.1  Glass panel  
A.1.2  Pulverized clay  
A.1.3 Carbon  tetrachloride  - containin g 10 % mineral oil  
 
A.2 Procedure  
A.2.1  To test the cleani ng a nd poli shing property of the glass cleaner, it is recommended that  
both sides of th e glass panel should be suitably prepared for application of the cleaner.  
 
A.2.2  Take two panels of clear, plate glass 150 mm x 75 mm x 1.5 mm. Dust them with pulverized cla y until a 
thin uniform coating is obtained. Spray a mist coat of water  -on each pan el to wet the clay and allow to dry for 
6 hours. Apply a similar coat of clay on the other side of the glass panels. Further apply a mist coat of carbon  
tetrachloride contai ning 10  % mineral oil on both sides of the panels. Allow the panels to  air dry for 24 
h. To one panel, apply the sample by spreading over the surface with a rag and immediately wipe off and  
polish with a clean cloth. Similarly treat the other side o f the p anel.  
A.2.3  Using the same conditions of test, clean  the other panel with the appr oved sample and compare the two 
panels for cleaning properties. The efficiency  of the sample shall not be inferior to that of the approved 
sample.  DEAS 1142 :2023 
© EAC 2023 – All rights reserved  5 
 Annex B  
(normative)  
Corros ion or discol ouration 
 
B.1 Apparatus  
B.1.1  Aluminium panel  - 75 mm x 50 mm  x 1 mm  
B.1.2 Watch glass  
B.1.3  Distilled water  
 
B.2 Procedure  
 
Place approximately 3 m l of the sample/cleaner on a cleaned, grease free surface of 75 mm x 50 mm  x 1 mm 
aluminium pan el and cove r with a watch glass.  
 
At the end of 6 hours, remo ve the watch glass, ri nse panel with distilled water and air dry at room 
temperature. Inspect the panel for any attack or discolouration.  
 DEAS 1142 :2023 
6 © EAC  2023 – All rights reserved  
 Annex C 
(normative)  
Determination of Non-volatile matter s conte nt 
C.1 Apparatus C.1.1 Glass beaker  
C.1.2 Steam bath  
C.1.3 Oven - 100°C to 105°C  
 
 
C.2 Procedure   
Weigh accurately a 50 g sample of the cleaner into a tared glass beaker and heat on a steam bath to dryness. 
Place the beaker in an oven at 100°C to  105°C and  dry to constant mass. (If decomposition or discolouration 
of the solids oc curs, carry out the drying in a vacuum oven at 45°C to 50°C.) Report the mass of the residue 
as a percentage by mass of the cleaner.  
 
C.3 Calculation  
 
Non-volatile matter,  percent b y mas s = 
x 100 
where  
A = mass i n g of the sample taken for tes t and beaker,  
B = mass in g of the beaker and solids after drying, and  
C = mass in g of the beaker.  
 
 
 
 
 
 
 
 
 
 
 
 DEAS 1142 :2023 
© EAC 2023 – All rights reserved  7 
 Annex D 
(normative)  
Sampling  
 
 
D.1 General requirement of sampling 
 
In drawing, preparing, storing and handling of test samples, the following precautions and directions shall be 
observed.  
D.1.1 Samples shall be taken in a place not exposed to dust or soot.  
D.1.2 The sampling instrument shall be clean and dry whe n used. 
D.1.3 Precautions shall be taken to protect th e samples, the materi al being s ampled, the sampling instrument 
and the containers for samples from adventitious contamination.  
D.1.4 Samples shall be placed in clean, dry and air -tight glass containers or other s uitab le containers on 
which the material has  no action.  
D.1.5 The sample co ntainers shall be of such size that they are almost completely filled up by the sample.  
D.1.6 Each sample container shall be sealed air -tight after filling and marked with  full deta ils of sampling, the 
date of sampling and th e month and year of m anufacture  of the material.  
D.1.7 Samples shall be stored in such a manner that the temperature of the material does not vary unduly 
from the normal temperature.  
 
D.2 Scale of sampl ing 
 
D.2.1 For determining conformity of a consignment  to this specification, sample shall be selected so as  to be 
representative of the consignment. Samples drawn in compliance with an agreement between the purchaser 
and the manufacturer shall be held to be represe ntative of the consignment. In case of dispu te, the following 
scheme is rec ommended to serve as gu ide. 
 
D.2.2 Lot - All the containers in a single consignment of the material drawn from the same batch of 
manufacture and of the same size shall con stitute a lot. If a consignment is declared or known t o consist of 
different batches of manufacture or different sizes of c ontainers, the containers belonging to the same batch 
and size shall be grouped together and each group shall constitute a separate l ot. Sample s sha ll be tested for 
each lot for ascertain ing conformity of the material to the requirements of this specificat ion. 
 
D.2.3 The number of containers ( n) to be chosen from a lot shall depend upon the size of the lot ( N) and shall 
be in accordance  with Tabl e D.1. 
 
Table D.1: Number of containers to b e selected  
 
Lot size  Number of containers to be selected  
N n 
Up to 500  10 
501 to 1 000  15 
1 001 and above  20 
 
D.2.4 These containers shall be chosen at random from the lot and in order to ensure th e randomne ss of  
selection, a random number table shall  be used. In case such tables a re not available, the following procedure 
shall be adopted:  
 DEAS 1142 :2023 
8 © EAC  2023 – All rights reserved  
 Arrange all the containers in the lot in a systematic manner and starting from any container, count them as 1,  
2, 3, . .  . _., up to r and so on, where r is the int egral part of N/n. Every rth container thus counted shall be 
withdrawn to give sample for test.  
 
D.3 Preparation of composite sample  
 
Shake well each of the containers selected according to D.2.3 and po ur out qua ntity of liquid such that the 
total quantity  obtained from all the containe rs provides material suffi cient for all the tests (about 500 g). 
Thoroughly mix the material drawn from the selected containers so as to form composite sample.  
 
 
 
 
 
 
 WD/TC 074/0 01: 2022  
© EAC 2022  – All rights reser ved 
  
 Bibliography   
[1] TZS 2262:2018 , Glass cleaner, liquid - Specif ication   
[2] RS 283: 201 7, Liquid glass cleaner – Specification  
[3] KS 1455: 1999 , Specification for glass cleaner - Part 1: Liquid glass cleaner