مشروع نهائي  
  
 
 
 
 
 
 
 
OS 197/2020  
 
 
 
الدهانات و الورنيشات– الدهانات المستحلبة  
للأعمال الداخلية والخارجية     
 
Paints  and Varnishes  – Emulsion Paints for Interior and Exterior  
Uses  
 
 
 
 
 
يعتمد  
 
 
 
ICS:  87.040  
 
 
 
 
 
 
 
 
 
 
 
 
 
 OS 197/2020  OMANI  STANDARD  
 
1 
  
 
 
الدهانات و الورنيشات– الدهانات المستحلبة  
للأعمال الداخلية والخارجية     
 
Paints and Varnishes – Emulsion Paints for Interior and Exterior  
Uses  
 
 
 
 
/   /   هـ،  الموافق  /    /2020 م
2012 م  : تاااااااااااااااااااااري  الاعتمااااااااااااااااااااا   
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 : صفة الإصدار  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 OS 197/2020  OMANI  STANDARD  
 
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 تقديـم 
 
المديرية العامة للمواصفات والمقاييس جهاز التقييس الوطني بالسلطنة أنشئت بموجب المرسوم السلطاني رقم  
39/ 1976, ومن مهامها إعداد المواصفات القياسية العمانية واللوائح الفنية إستناداً للمرسوم ا لسلطاني رقم 1  /
87 
 وقد قامت دائرة المواصفات بالمديرية باعداد المواصفة القياسية العمانية رقم OS 197/2020، الخاصة بـ" 
الدهانات و الورنيشات – الدهانات المستحلبة  للأعمال الداخلية والخارجية"“ Paints and Varnishes  –  ،
Emulsion P aints for Interior and Exterior Use ”  ،وقد تم إعداد المشروع باللغتين العرب ية 
والإنجليزية بعد إستعراض المواصفات القياسية العربية والأجنبية والدولية والمؤلفات المرجعية، والقوانين ذات 
الصلة. 
وقـد اعتمدت هذة المواصفة كـمواصفة قياسية عمانية ملزمة , بتاريخ  / /   ه, الموافق  /  /   م، على  أن تلغي 
المواصفة القياسية العمانية رقم (OS 197/1990) وتحل محلها. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 OS 197/2020  OMANI  STANDARD  
 
3 
  
 
Paints  and Varnishes – Emulsion Paint  
 for Interior and Exterior Uses  
 
 
 
 
1 –   SCOPE AND FIELD OF APPLICATION :  
 
This Omani  Standard specifies performance requirements and appropriate methods of test 
for emulsion paints for interio r and exterior use applied by brush, roller or spray techniques.  
It covers matte, gloss and semi gloss emulsion paints which can be applied to non -metallic 
substances classified into the following three types covering different circumstances where   
the p aint may be applied.  
A -  for interior/exterior gloss and semi -gloss  
B -  for   interior/exterior matte emulsion paints    
 
 
It also specifies requirements for the marking of containers which may be of a range of 
nominal capacities. The exterior paints are  also suitable for                                                                                              
interior use  
 
2-     COMPLEMENTRY REFERNCES :  
  
2.1   ISO 15528 paints and varnishes and raw materials for paints   and varnishes -sampling    
2.2 ISO 1513 paints and varnishes examination and preparation of sampling for testing.  
2.3 ISO 3251  “Paints, varnishes and plastics -Determination  of non - volatile - matter 
content”.  
2.4 ISO 1524 “Paints, varnishes and printing inks -- Determination of finen ess of grind "  
2.5 ISO 3668  "Paints and varnishes - Visual comparison of the color of  paints"   
2.6 ISO 3856 -1 “paints and varnishes – determination of " soluble " metal content – part1: 
determination of lead content - flame atomic absorption spectrometric  method and 
dithizone spectrophotometric method”.  
2.7 .ISO 9117 -1 "Paints and varnishes -- Drying tests -- Part 1: Determination of through -dry 
state and through -dry time"  
2.8       ISO 2812 -2  " Paints and varnishes - Determination of resistance to liquids -part 2: water 
immersion method"  
2.9      ISO 3248  " Paints and varnishes - Determination of the effect of heat"  
2.10 GSO 1236   “ Method of tests for Paints and Varnishes -Determination of alkali resistance 
(immersion test)”.  
2.11 ISO 2810  " Paints and Va rnishes -Natural weathering of coatings - Exposure and 
assessment".  
2.12 ISO 1519 Paints & varnishes - Bend test (  cylindrical mandrel)  
 OS 197/2020  OMANI  STANDARD  
 
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 2.13    ASTM D 2486 " Method of tes t of scrub resistance for wall paints "  
2. 14 ISO 6504 -3 "Paints and varnishes --Deter mination of hiding power -- Part 3: 
Determinatio n of contrast ratio of light - coloured paints at a fixed spreading rate.  
2.15 ISO 16474 -3 Paints and varnishes -- Methods of exposure to laboratory light sources -- Part 3: 
Fluorescent UV lamps  
 2.16   ISO 2813 " Paints and varnishes -- Determination of gloss value at 20 degrees, 60 
degrees and 85 degrees  
 2.17    ASTM D2574 Standard Test Method for Resistance of Emulsion Paints in the Container 
to Attack by Microorganisms"  
2.18 SASO 2194  "Paints and varnishes - Method for testing Consistency of  the paints by 
stomer viscometer"  
 
 
3 –     DEFINITIONS :  
 
 
3.1 Emulsion paint:  
 
A paint containing an emulsion Binder, Pigment, Extender, Additives and water.  
 
3.2 Emulsion binder:  
A stabilized dispersion of a suitable polymer resin in a water phase.  
 
3.3 Vehicle:  
 
The liquid portion of the paint in which the pigment is dispersed and it is composed of the 
binder, additives  and the thinner if any.  
 
3.4 Binder:  
 
The non -volatile portion of the  “Vehicle” of a paint. It bi nds or cements the pigments 
particles together and the paint film as a whole to the material to which it is applied.  
 
3.5 Thinner:  
 
Volatile liquids added to paints or varnishes to facilitate application and to aid penetration 
by lowering gather viscosity.  They should be completely miscible with the paints or 
varnish at ordinary temperature and should not cause precipitation of the non -volatile 
portion either in the container or in the film during drying. For some purposes thinner 
containing a small proport ion of non -volatile material may be used.  
 OS 197/2020  OMANI  STANDARD  
 
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 3.6 Pigment:  
 
The insoluble dispersed particles in a paint which give the dried film its characteristic 
properties of colour and opacity.  
 
3.7 Opacity:  
 
The ability  of a coat of paint to obscure (hide) an underl ying surface.  
 
3.8 Drying time:  
 
The time which elapses between the application of a coat of paint and the attainment of a 
specified dry state.  
 
 
3.9 Lifting:  
 
Failure caused by the swelling of a dry film of paint or varnish when another coat is 
applied ov er it an usually manifested by wrinkled appearance.  
 
 
4 –     CHARACTERISTICS AND REQUIREMENTS :  
 
4.1 Composition:  
 
The emulsion paint shall consist of pigments with suitable extenders in suitable 
proportion in a medium consisting of any suitable stable sy nthetic polymer emulsion in 
water with other suitable ingredients as may be necessary to produce a material so as to 
satisfy the requirements of this standard.  
 
 4.2 Condition in container:  
 
The material shall have no evidence of biological growth, leverin g, skinning, and 
putrefaction, hard settling of the pigment, lumps, or corrosion of the container. Any 
settled pigment shall be readily dispersible in the liquid medium by stirring with paddle to 
produce smooth homogeneous emulsion paints, free from persis tent foam. The material 
shall have no irritating of offensive odor . 
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 4.3 Non-volatile content:  
 
The percent of non -volatile content of the gloss and semi – gloss emulsion paint shall 
not be less than 40% by weight and the percent of non -volatile content of  the matte 
emulsion paint shall not be less than 50% by weight.  When the paint is tested 
according to clause (2.3).  
 
4.4 Consistency:  
 
The paint shall be in such a condition that stirring readily produces a smooth uniform 
mixture of good consistency. It sh all have a minimum 80 KU viscosity for mat 
emulsion paint s and 70 -120 KU viscosity for gloss and semi -gloss emulsion paints at 
25 ○C. When the paint is tested according to clause (2.18)  
 
 
4.5 Colour :  
 
The colour of the paint shall be close to the approved reference sample. When the 
paint is tested according to clause (2.5).  
 
 
 
 
4.6 Thinning:  
 
The paint shall have tendency to mix readily with water if necessary to a smooth and 
homogeneous state with minimum amount of foaming. Foaming if any shall dissipate 
rapidly.  
 
4.7 Fineness of grind:  
 
The particle size of th e paint shall be less  than 50 µm. When the paint is tested 
according to clause (2.4)  
 
4.8 Lead content:  
 
The lead content shall not exceed 0.009% of the total mass of the paint. When the 
paint is tested according to clause (2.6)  
 
4.9 Application propertie s: 
 
The material after recommended thinning shall be suitable for application by brush, spray, 
or roller. The resulting paint film shall not show pigment flocculation, foaming, 
coarseness or other undesirable characteristics. The paint film shall also prod uce no OS 197/2020  OMANI  STANDARD  
 
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 lifting, softening or any other defects upon recoating of a previously painted surface after 
2 hours of air drying. When a film of the paint has dried for the specified drying  period, it 
shall have, smooth, firmly adherent and substantially free fr om brush marks or sagging or 
wrinkling, and shall in no way be inferior as regards finish to a film prepared in the same 
way and the same time from the approved reference sample.  
 
 
4.10 Drying time:  
 
- The paint shall have surface drying time not more than 3 0 minutes  for matte emulsion 
paints and not more than  1 hour for gloss and semi -gloss emulsion paints. The paint 
shall become hard -dry in a time not more than 3 hours for matte emulsion paints  and 
not more than 5 hours for gloss and semi -gloss emulsion paints (wet film thickness of 
100 µm on glass panel) under temperature of 23 + 2 °C and percentage humidity of (50 
+ 5)% with air circulation and without exposing to the sun, when the paint is tested 
according to clause (2.7).  
 
4.11 Scrub resistance:  
 
The paint film applied on the panel test shall exhibit a minimum scrub resistance when 
exposed  to 1500 scrub cycles for type  A  for interior/exterior gloss and semi -gloss  
- 800 scrub cycles for type  B  exterior matte emulsion paints    
- 400 scrub cycles for ty pe B  for interior matte emulsion paints  
When the paint is tested according to clause (2.13)  
 
 
4.12 Alkali resistance (white and pastel shades):  
 
The paint film shall show no change in hue, lightness, gloss and any other surface defects 
after 24 hours when  alkali resistance test is carried out using 1 % of Sodium Hydroxide 
solution when tested according to clause (2.10).  
 
 
 
4.13 Heat stability:  
 
The viscosity of the paint shall not change more than 5% of the original and shall show no 
coagulation flocculat ion or discolorations after carrying out the test of heat stability when 
tested according to clause (2.9)..  
 
4.14  Freezing and melting:  
  OS 197/2020  OMANI  STANDARD  
 
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 The paint shall not change when exposed to low temperature ( -9 oC ) for 16 hours and 
normal temperature ( 25 + 3 oC ) for 16 hours.  
The paint shall not change the viscosity more than 10% of the original value and shall not 
shows no clotting or integrate or decrease in the scrub resistance. After the test is finished 
the paint shall be dry to give smooth and coordinated texture when applied to a wallboard.  
 
4.15 Odour:  
 
The odour of the paint shall not be putrid or otherwise offensive or irritating before, 
during and after application. There shall be no residual odour after 24 hours of drying.  
 
4.16 Dry opacity (white and  pastel shades):  
 
The paint film when applied  to150 µm bar coated applicator  shall give a minimum dry 
film contrast ratio after placed on black and white chart paper allow to dry overnight 
when tested according to clause (2.14).  
 
 
 
Table (1)  
Dry opacity according to type and class of the paint  
 
 
                              Type of paint  
Class  Matte  Semi -gloss  Gloss  
A - >90%  >90%         
B 95%  - - 
 
  
4.17 Accelerated weathering:  
 
4.17.1  The paint layer shall show no blisters, chalking, discoloration,  or any abnormal 
 appearance after 300 hours of accelerated weathering when tested according to clause 
 (2.15). The test should not exceed 5%. If there any changes, they shall not exceed 5% 
 and this test is done only for interior matt emulsions.  
4.17.2  Criteria for Accelerated weathering test:  
 Application rods: Aluminum rods in a suitable size and treated with chromate  
 Application: By the application machine (wire rod or hollow mold) with a 
thickness of 150 microns.  
 Drying Time: 7 days, Temperature: (23 ± 2)°C, Humidity: (50 ± 5)%, 
followed by 72 hours in temperature of (40 ± 20) °C. 
 Type of lamps: UVB lamps.  
 Test Duration: according to clause (2.15).  
 
4.18 Resistance to biological growth:  
 OS 197/2020  OMANI  STANDARD  
 
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 The paint in container shall show no fungus growth for a period of 12 months at 40 ºC 
when tested according to clause (2.17).  
 
 
4.19 Keeping properties:  
 
The paint when stored under normal storage conditions at temperature not exceeding 38 + 
1 ºC in the original sealed containers, shall retain properties specified in this  standard for 
a period of not less than 12 months.  
 
4.20 Gloss:  
 
When a fine paint film is applied on a glass panel of ( 15 cm x 10 cm x 2 mm ) 
dimensions by a hollow mass of 150 µm thickness or by application  wire and let to dry 
for 24 hours under  (25 ± 1) °C and humidity of  70 %, shall show a specular gloss as 
mentioned in table (2) below:  
Table (2)  
Gloss Value foe Emulsion Paints  
Emulsion Paint Category  Measured Angle  Gloss Value  
matte emulsion paint  85 º <10 
semi -gloss emulsion paint  60º 25-40 
gloss emulsion paints  60º >55 
 
 
4.21 Flexibility and adhesion:  
 When applying a thin layer of paint by a hollow block with 150 micrometers thickness, or 
wire rod application on a plate of tin after scratching it lightly, removing all the fat, and 
leaving it to dry for 7 days at a temperature of (25  1)° C and relative humidity of not 
more than 70%, it shall bear the curvature test by using a handle with 6 mm thickness (for 
internal use Paints) and 3 mm (for external use paints). Also the thin layer of paint shall 
be strongly adherent without  any cracking or peeling  when tested according to clause 
(2.12).  
 
5-     SAMPLING :  
  
5.1 Take a representative sample of the paint not less than 500 ml according to the methods 
mentioned in ISO 15528 paints and varnishes and raw materials for paints   and varnishes 
-sampling.  
5.2 Sample shall be prepared to tests according  to the methods mentioned in  ISO 1513 paints 
and varnishes examination and preparation of sampling for testing.  
 
 
6-  METHODS OF TESTING:  
 
6.1 The follo wing tests shall  be carried out on the filled containers selected according to 
 item 5.1  after carrying out the visual examination of the labeling information.  
 
6.1.1  Determination of non -volatile content  OS 197/2020  OMANI  STANDARD  
 
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6.1.2  Determination of colour  
6.1.3  Determinatio n of fineness of grind  
6.1.4  Determination of lead content  
6.1.5  Determination of drying time  
6.1.6  Determination of scrub resistance  
6.1.7  Determination of alkali resistance  
6.1.8  Determination of heat stability  
6.1.9  Determination of dry opacity  
6.1.10 Determination of resistance to accelerated weathering  
6.1.11   Determination of the apparent brightness  
6.1.12 Determination of Flexibility and adhesion  
6.1.13 Determination of microorganisms resistance  
 
7-   PACKING :  
 
The paints shall be packed in suitable, clean air -tight containers, the containers shall be 
filled as to have an ullage for 15% maximum.  
 The allowed tolerance should be + 2 % of the content.  
 
 
8-     LABELLING:  
 
Each container shall be legibly and indelib ly marked in Arabic or Arabic and English by the 
following information:  
 
8.1 The name and the type of the paint as classified.  
8.2 The name of the manufacturer or his trade mark.  
8.3 Country of origin.  
8.4 The colour of the paint should be shown on the con tainer.  
8.5 If the paints manufacture is under license it should be mentioned.  
8.6 Batch number.  
8.7 Date of production (month -year).  
8.8 Volume in liter or mass in kilograms.  
8.9 Application instruction  
8.10 Any warning information concerning the paint.  
8.11 Warning:  Do not use this container for keeping food stuff.  OS 197/2020  OMANI  STANDARD  
 
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المـــراجعREFERENCES 
 
- المواصفه القياسيهالعمانيه    رقم 197  / 1990  
"الدهانات والورنيشات-الدهانات المستحلبه"   
المديريه العامه للمواصفات والمقاييس، سلطنة عمان - Omani standard No. 197/1990  
“Paints a nd varnishes -Emulsion Paints”  
Directorate General for Standards &  
Metrology, Ministry of Commerce & 
Industry, Sultanate of Oman  
- المواصفة القياسية السعودية رقم470/ 2016   "
الدهانات والورنيشات- الدهانات المستحلبة"     الهي ئة 
العربية السعودية للمواصفات والمقاييس     Saudi Arabian Standard No. 470/2016  
“Paints and varnishes -Emulsion Paints”  
Saudi Arabian Standards Organization  
 
- البند 1303 )) من التشريع الأمريكي الخاص 
بمفوضية حماية المستهلك المتعلق بتعديل نسبة تركيز 
الرصاص في الأصباغ من 0.06% إلى0.009% 
 - Part (1303)  from US legalization of 
Consumer Products Commission to reduce 
lead content from 0.006% to 0.009