DEAS 849: 202 3 
ICS 87.040  
 
© EAC 2023                                                                                                                         Third  Edition 2023 
 DRAFT EAST AFRICAN STANDARD  
Silk (sheen) emulsion paint for interior use — Specification  
EAST AFRICAN COMMUNITY  
 DEAS 849: 202 3 
ii © EAC  2023 – All rights reserved  
 Copyright notice  
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participants in the EAC standards development process is permitted without prior permission from EAC, 
neither this document nor any extract from it may be reproduced, stored or transmitted in any form for 
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Reproduction for sales purposes may be subject to royalty payments or a licensing agreement.  
Violators may be prosecuted . DEAS 849: 2021  
© EAC 2023 – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  2 
5  Packaging  ................................ ................................ ................................ ................................ ...............  3 
6  Labelling and m arking  ................................ ................................ ................................ .........................  3 
7  Sampling  ................................ ................................ ................................ ................................ ................  4 
8  Reagents  ................................ ................................ ................................ ....Error! Bookmark not defined.  
Annex A (normative)  Determination of recoating properties ................................ ................................ ........  5 
A.1 Apparatus  ................................ ................................ ................................ ................................ ...............  5 
A.2  Procedure  ................................ ................................ ................................ ................................ ...............  5 
Annex B (normative)  Dete rmination of fungal resistance  ................................ ................................ .............  6 
B.1  Principle  ................................ ................................ ................................ ................................ ................  6 
B.2  Apparatus  ................................ ................................ ................................ ................................ ...............  6 
B.3 Procedure  ................................ ................................ ................................ ................................ ...............  6 
Annex C (normative)  Determination of colour  ................................ ................................ ...............................  7 
C.1 Principle  ................................ ................................ ................................ ................................ .................  8 
C.2 Procedure  ................................ ................................ ................................ ................................ ...............  8 
Annex D (normative)  Determination of temperature stability  ................................ ................................ ....... 9 
D.1 Principle  ................................ ................................ ................................ ................................ .................  9 
D.2 Procedure  ................................ ................................ ................................ ................................ ...............  9 
Annex E (normative)  Determination of the quantity of paint  ................................ ................................ ...... 10 
E.1 Apparatus  ................................ ................................ ................................ ................................ .............  10 
E.2  Procedure  ................................ ................................ ................................ ................................ .............  10 
E.3 Calculation  ................................ ................................ ................................ ................................ ...........  10 
Annex F (normative)  Determination of pH  ................................ ................................ ................................ .... 11 
F.1 Apparatus and materials  ................................ ................................ ................................ ....................  11 
F.2  Principle  ................................ ................................ ................................ ................................ ...............  11 
F.3  Procedure  ................................ ................................ ................................ ................................ ............  11 
Annex G (normative)  Determination of resistance to wet abrasion  ................................ ...........................  12 
G.1  Principle  ................................ ................................ ................................ ................................ ..............  12 
G.2  Apparatus  ................................ ................................ ................................ ................................ ............  12 
G.3 Reagents  ................................ ................................ ................................ ................................ ..............  12 
G.4  Procedu re ................................ ................................ ................................ ................................ ............  12 
Bibliography  ................................ ................................ ................................ ................................ ......................  14 
 DEAS 849: 202 3 
iv © EAC  2023 – 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 Ea st African Standards Committ ee (EASC)  mandated to develop and 
issue East African Standards  (EAS) . 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 Standards 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 circul ated 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 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 commi ttee responsible for this document is Technical Committee EASC/TC 070, Paints, varnish es and 
related products.  
This third edition cancels and replaces the first edition (EAS 849: 2 021) and amendment 1: 2019 which has 
been technically revised.  
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 or all such patent rights.  
 
 DRAFT EAST AFRICAN STANDARD  DEAS 849:  2023 
 
© EAC 2023 – All rights reserved  1 
 Silk (sheen) emulsion paint for interior u se — Specification  
1 Scope   
This Draft East African Standard specifies requirements, sampling and test methods for silk (sheen) emulsion 
paint for interior use . 
2 Normative references   
The following documents are referred to in the text in such a way that some or all of their content constitutes 
requirements 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 31, Laundry soaps — Specification  
ISO 591 -1, Titanium  dioxide pigments for paints — Part 1: Specifications and methods of test  
ISO 1524, Paints, varnishes and printing inks — Determination of fineness of g rind 
ISO 2811, (all parts), Paints and varnishes — Determination of density  
ISO 2813, Paints and varnishes — Determination of gloss value at 20 degrees, 60 degrees and 85 degrees  
ISO 4618, Paints and varnishes — Terms and definitions  
ISO 6503, Paints and varnishes — Determination of total lead — Flame atomic absorption spectr ometric 
method  
ISO 6504 -3, Paints  and varnishes — Determination of hiding power — Part 3: Determination of contrast ratio 
of light coloured paints at a fixed spreading rate  
ISO 9117 -3, Paints and varnishes — Drying tests — Part 3: Surface -drying test using ballotini  
ISO 9117 -4, Paints and varnishes — Drying tests — Part 4: Test using a mechanical recorder  
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling  
ISO 21207, Corrosion tests in artificial atmospheres — Accelerated corros ion tests involving alternate 
exposure to corrosion -promoting gases, neutral salt -spray and drying  
ISO 3251, Paints, varnishes and plastics — Determination of non -volatile -matter content  
ISO 3856 -1, Paints and varnishes — Determination of "soluble" metal content — Part 1: Determination of lead 
content  
ISO 16474, Paints and varnishes — Methods of exposure to laboratory light sources  DEAS 849: 202 3 
2 © EAC  2023 – All rights reserved  
 3 Terms and definitions   
For the purposes of this document, the terms and definitions given in ISO 4618 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 4 
 Requirements  
4.1  General requirements  
4.1.1   Composition  
4.1.1.1   The paint shall be a med ium consisting of any stable synt hetic polymer emulsion in water 
containing pigments and suitable ingredients as may be necessary to produce a paint so as to comply with the 
requirements of this standard.  
4.1.1.2   It shall contain a suitable level of an effective non -mercurial or non -phenolic fungicide approved 
by an authorised organisation of the respective Partner State. The level used shall not render the finish  or its 
film hazardous to health.  
4.1.2   Condition of the paint in the container  
The paint sha ll have no irritating or offensiv e odour It shall be free from lumps, skins and the condition of the material shall 
be such that if any settling of the paint occurs, it shall be easily incorporated on stirring  
4.1.3  Application properties  
When the paint is suitably applied, the resulting film shall show no pigment flocculation, coarseness or other 
undesirable characteristics  
4.1.4  Thinning  
Ready -to-use paints, if thinned, shall not contain more than 15% (v/v) of water. The paint shall easily blend into a s mooth, 
homogeneous state with min imal foaming. Any foaming that occurs shall dissipate quickly.  
4.2  Specific requirements   
The paint shall comply with the requirements given in Table 1 when tested in accordance with the test 
methods specified therein.  DEAS 849: 202 3 
© EAC 2023 – All rights reserved  3 
 Table 1 — Specific requirements for silk (sheen) emulsion paint  
 
5  Packaging  
The paint shall be pack aged in a suitable container that prevents it from deterioration during storage, 
transportation and normal handling.  
6  Labelling  
6.1  The labelling shall be either in English, Kiswahili or French or in combination as agreed between the 
manufacturer and the supplier. Any other language shall be optional.  
6.2  The paint shall be packaged in co ntainers that are legibly and indelibly marked with the following 
information  
a)  name of the product as ’Silk” or “Sheen” emulsion paint”;  
b)  manufacturer’s name and  physical address and/or registered trade mark  S/N Characteristic  Requirement  Test method  
i.  Quantity of paint, %, of declared volume at 25 ºC ± 2 ºC, 
min. ± 2 Annex E  
ii.  Specific gravity at 25 ºC ± 2 ºC  1.05-1.40 ISO 2811  
iii.  Opacity, %, min.  90 ISO 6504 -3 
iv.  Fineness of grind, µm, max  20 ISO 1524  
v.  Solids content, % m/m, min.  
 50 ISO 3251  
vi.  Drying time  at 25 °C, h, max.  
• Surface drying time  
• Hard drying time   
2 
4 ISO 9117 -3 
vii.  pH 8 – 9 Annex F  
viii.  Resistance to wet abrasion, cycles, min.  5000  Anne x G 
ix.  Titanium dioxide content*, % m/m (for white paints), min.  15 ISO 591 -1 
x.  Colour   To pass test  Annex C  
xi.  Temperature stability at 20 °C  To pass test  Annex D  
xii.  Gloss  at 60 °, %  
• 2 h, max.  
• 16 h, min.   
45 
20 ISO 2813  
xiii.  Fungal resistance  To pass test  Annex B  
xiv.  Resistance to accelerated weathering  the paint film shall not exhibit any 
flaking, cr acking, chalking or colour 
fading.  ISO 16474  
xv.  Recoating properties  To pass test  Annex A  
xvi.  Lead content, ppm, max.  90 ISO 3856 -1 DEAS 849: 202 3 
4 © EAC  2023 – All rights reserved  
 NOTE  The name, physical address of th e distributor/supplier and trademark may be added as required  
c)  indication of colour/colour code;  
d)  date of manufacture;  
e)  net content;  
f)  batch/lot number;  
g) country of origin;  
h)  best before date; and  
i)  instructions for use and safety  and disposa l 
7  Sampling  
Sampling of the paint shall be done in accordance with ISO 15528.  DEAS 849: 202 3 
© EAC 2023 – All rights reserved  5 
 Annex A 
(normative)  
 
Determination of recoating properties  
A.1 Apparatus  
A.1.1  Aluminiu m metal , flat sheets of size 300 mm x 100 mm x 4 mm  
A.1.2  Soft hair brush , a clean soft hair brush with a width of about 1 cm and a hair length of about 2 cm  
A.1.3  Glass stirrer , long enough to stir the paint without dipping the hands into the pai nt 
A.2  Procedure  
Suitably thin the paint where necessary and apply one coat of the paint onto a  dry panel and leave to dry for 2 
h at ambient temperature. By a step -coating method, apply a second coat and examine for recoating 
properties after drying for 30 min.  Figure A.1 shows how step coating is applied.  
 
 
Figure A.1 — Suitable method of step coating  
A.2  Results  
The paint shall be de emed to have passed the test if  the paint show no any lifting or softening of the 
underlying coat and exhibit no colour separation, sagging, pitting, flaking or cracking  
 
DEAS 849: 202 3 
6 © EAC  2023 – All rights reserved  
 Annex B  
(normative ) 
 
Determination of fungal resistance  
B.1  Principle  
Aluminium metal panel is evenly coated with two coats of the paint by brushing and then air -dried for a 
specified period. The panel is exposed on an exposure rack for a specified period and the intensity of fungal 
growth is observed.  
B.2  Apparatus  
B.2.1   Exposure rack shall usually support the panels at an angle of 45º to the horizontal.  
B.2.2   The rack shall be so situated that the specimens are not protected or overshadowed by neighbouring 
objects.  
B.2.3  The construction of the racks shall be such that the backs of the specimens are freely exposed to the 
atmosphere and such that water drainage does not occur from o ne panel to the other.  
B.2.4  Specimens shall not be in electrical contact with metals, nor as far as possible in direct contact with 
wood or other porous material. A suitable method of mounting panels is shown in Figure B.1. If panels are 
supported in grooves, the suitable drainage holes shall be provided to prevent accumulation of water.  
B.3 Procedure  
Apply two coats of the paint by brushing on a 300 -mm x 150 -mm x 4 -mm clean, dry, aluminium panel with ½ h 
drying between coats. The edges and back of the pan els shall be coated with protective paint. Expose the 
panels on the exposure rack and examine the fungal growth on the panels monthly, for six months.  
 
Figure B.1 — Suitable method of mounting panels  
DEAS 849: 202 3 
© EAC 2023 – All rights reserved  7 
 B.4  Results  
The paint shall be deemed to have passed the test if the paint panels are  free from surface fungal growt h. 
 DEAS 849: 202 3 
8 © EAC  2023 – All rights reserved  
 Annex C  
(normative)  
 
Determination of colour  
C.1 Principle  
The colour of the paint applied on a white unglazed art paper is compar ed visually in diffused daylight with that 
of the standard.  
C.2 Procedure  
C.2.1  Apply the paint using a film applicator t o give a wet film thickness of 50 μm on a 150 -mm x 150 -mm 
white unglazed art paper. Air -dry the film for 4 h in a well -ventilated room in a horizontal position. When the 
film is dry, apply a second coat of the paint to give again a combined wet film thickn ess of 50 mm and air dry.  
After 16 h, compare the colour of the film with that of the standard colour visually in d iffused daylight.  
C.3  Results  
The paint shall be deemed to have passed the test if the colour of the paint matches with the standard colour.  
 
 DEAS 849: 202 3 
© EAC 2023 – All rights reserved  9 
 Annex D 
(normative)  
 
Determination of temperature stability  
 
D.1 Principle  
The paint is subjected to extremes of temperature and then tested for thinning and application properties.  
D.2 Procedure  
D.2.1  Fill two clean 500 -mL metal containers with paint  leaving the usual ullage and seal tightly. Keep one 
of the containers at 20 ºC ± 1 ºC and the other at 60 ºC ± 2 ºC for 48 h. Keep the se two containers at room 
temperature for 24 h thereafter. Subsequently, examine the paint in the two containers.  
D.3 Results  
The paint shall be deemed to have passed this test if it is free from lumps, skins, settling and is capable of 
thinning suitably for application by method.  
 
 DEAS 849: 202 3 
10 © EAC  2023 – All rights reserved  
 Annex E 
(normative)  
 
Determination of the declared quantity of paint  in the container  
 
E.1 Apparatus  
E.1.1   Graduated measuring cylinder  
E.1.2   Empty container  
E.2  Procedure  
Measure out the volume of the paint by pouring it int o the measuring cylinder and emptying the paint into an 
empty container. Measure out until all the paint is finished and record the total volume of the paint by adding 
up the volume.  
E.3 Calculation  
The measured volume shall be expressed as follows:  
% of volume measured is  
 
Where,  
V1  is the total measured volume; and  
V  is the declared volume  DEAS 849: 202 3 
© EAC 2023 – All rights reserved  11 
 Annex F 
(normative)  
 
Determi nation of pH  
 
F.1 Apparatus and materials  
F.1.1  Beaker, 150 -ml 
F.1.2  pH meter with glass calomel electrodes  
F.1.3  Analytical balance  
F.1.4 Glass rod  
F.1.5  Distilled water  
F.2  Principle  
The paint is mixed with freshly boiled water to remove the carbon dioxide and the hydrogen ion concentration 
is measured using a pH meter.  
F.3  Procedure  
Weigh 5.00 g ± 0.01 g of the paint. Place it in a 150 -mL beaker and add 50 g, freshly boiled, distilled water.  
Mix well by means of a glass rod and cool to 23 ºC ± 2 ºC. Measure the pH with a pH meter using glass 
calomel electrode by carefully following the instructions of the meter.  
 DEAS 849: 202 3 
12 © EAC  2023 – All rights reserved  
 Annex G 
(normative)  
 
Determination of resistance to wet abrasion  
 
G.1  Principle  
The painted panels are subjected to wet rubbing in the abrasion test apparatus at a specified speed and load 
of the brush. The panels are examined at the end of the stipulated oscillations for film defects.  
G.2  Apparatus  
Wet abrasion tester , as shown in Figure G.1 and having the following accessories:  
a) Washing  unit, of such a construction as to hold the brush in a box or holder, which moves backwards 
and forwards in a straight line across the  test panels at the rate of 38 ± 2 strokes per minute. The trays 
shall be watertight to hold the panels;  
b)  Brush a pad made out of polyurethane foam of density 25 kg/m3 and of size 85 mm x 36 mm x 12 mm. 
The total mass of the brush and the holder shall be 500 g; and  
c)  Fractional horse power motor, of suitable speed to regulate the oscillations of the brush.  
G.3 Reagents  
Soap solution, dissolve 0.5 g of laundry soap complying with EAS 31 weighed to the nearest 0.001 g 
(previously dried at 105 ºC ± 2 ºC f or 30 min) in distilled water to give 0.5 % (m/v) solution.  
G.4  Procedure  
G.4.1  To prepare the panel, clean a glass panel, 415 mm x 120 mm. Apply a coat of the undercoating 
enamel to give a wet film thickness of 35 µm - 38 µm and store at 120 ºC for 30 min. Rub down with an emery 
paper and wipe until the gloss is removed completely. Apply a coat of the paint by use of a bru sh or film 
applicator to give a wet film thickness of 150 µm. Allow this to air dry for 16 h.  
G.4.2  Dip the brush in distilled water at  25 ºC for 30 min. to a depth of 12 mm. Shake off excess water and 
soak in the soap solution for 5 min. Fix the painted test panel in the tray in position with painted surface 
upwards. Mix the brush in its holder, having a total load of 0.5 kg and adjust the stroke in such a way that not 
less than 10 mm of the film is left free on both ends. Start the oscillations of the bru sh. Keep the panel wet by 
adding soap solution at the rate of 10 to 12 drops per minute in the path of the brush. Wash with water, allo w 
to dry, and examine the film for any defects and note the number of oscillations when these defects start 
showing.  
 DEAS 849: 202 3 
© EAC 2023 – All rights reserved  13 
  
 
Figure G.1 — Wet abrasion tester  
DEAS 849: 202 3 
14 © EAC  2023 – All rights reserved  
 Bibliography  
EAS 849:2021, Silk (sheen) emulsion paint for interior use — Specification  DEAS 849: 2021    
 
© EAC 2021 – All rights reserved