ICS 87.040  
 
Reference number  
DRS 232: 20 20 
© RSB 2020  
  
 RWANDA 
STANDARD  DRS  
232 
 
Second edition  
2020-mm-dd 
 
High gloss synthetic enamel paint  — 
Specification  
   
Formatted:  Font color:  AutoDRS  232: 20 20 
©RSB 20 20- All rights reserved                  ii 
 In order to match with technological development and to keep continuous progress in industries, 
standards are subject to periodic review. Users shall ascertain that they are in possession of the latest 
edition  
 
 
 
 
 
 
 
 
© RSB 2020  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized 
in any form or by any means, electronic or mechanical, including photocopying and microfilm, without 
prior written permission from R SB. 
Requests for permission to reprodu ce this document should be addressed to : 
Rwanda Standards  Board  
P.O Box 7099 Kigali -Rwanda  
KK 15 Rd, 49  
Tel. +250 788303492  
Toll Free: 3250  
E-mail: info@rsb.gov.rw  
Website: www.rsb.gov.rw  
ePortal: www.portal.rsb.gov.rw  DRS  232: 20 20 
iii                ©RSB 2020- All rights reserved  
 Contents  Page 
1 Scope  ................................ ................................ ................................ ................................ ....... 1 
2 Normative references  ................................ ................................ ................................ ..............  1 
3 Terms and definitions  ................................ ................................ ................................ .............  2 
4 Grades  ................................ ................................ ................................ ................................ ... 23 
5 Requirements  ................................ ................................ ................................ ........................  34 
5.1 General requirements  ................................ ................................ ................................ ...........  34 
5.1.1  Odour  ................................ ................................ ................................ ................................ ..... 34 
5.1.2  Condition in the  container  ................................ ................................ ................................ .... 34 
5.1.3  Storage stability  ................................ ................................ ................................ ....................  34 
5.1.4  Anti-fungal properties  ................................ ................................ ................................ ...........  34 
5.2 Specific requirements  ................................ ................................ ................................ ...........  45 
6 Packaging and labelling  ................................ ................................ ................................ ........  45 
6.1 Packaging  ................................ ................................ ................................ ..............................  45 
6.2 Labelling  ................................ ................................ ................................ ................................  56 
7 Sampling  ................................ ................................ ................................ ................................  56 
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 Foreword  
Rwanda Standard s are prepared  by Technical Committees and approved by Rwanda Standards Board (RSB) 
Board  of Directors in  accordance with the procedures of RSB, in compliance with Annex 3 of the WTO/TBT 
agreement on the preparation, adoption and application of standards.  
The main task of technical committees is to prepare national standards.  Final Draft Rwanda S tandards adopted 
by Technical committ ees are ratifie d by me mbers of RSB Board of Director s for publication and gazettment as 
Rwanda Standards.  
CD 232 was prepared by Technical Committee RSB/TC 24, Chemicals and Consumer Products . 
In the preparation of this standard, reference was made to the following standard:  
1) SANS 630 , Decorative high gloss enamel paints  
2) SANS 515 , Decorative paint for interior use  
The assistance de rived from the above source is hereby acknowledged with thanks.  
This second  edition cancels and replaces the first edition (RS  232:2014  of which has / have been technically 
revised.  
Committee membership  
The following organizations were represented on the Technical Committee on Chemicals and Consumer 
Products  (RSB/TC 24) in the preparation of this standard.  
University of Rwanda/College of Sciences and Technology (UR/CST)  
Rwanda Investigation Bureau (RIB)  
AGROPY Ltd  
AMEKI Color  
Shalom Paints  
Rwanda Environment Management Authority (REMA)  
AMACO Paints  
Rwanda Association of Professional Environmental Practitioners (RAPEP)  
Rwanda  Standards Board (RSB) – Secretariat  DRS  232: 20 20 
v                ©RSB 2020- All rights reserved  
 Introduction  
Enamel paint is paint that air dries to a hard, usually glossy, finish, used for coating surfaces that are outdoors 
or otherwise subject to hard wear or variations in temperature.  
Synthetic resins, and are totally dif ferent in composition; vitreous enamel is applied as a powder or paste and 
then fired at high temperature. There is no generally accepted definition or standard for use of the term 
enamel paint, and not all enamel -type paints may use it.  
Typically,  the ter m "enamel paint" is used to describe oil -based covering products, usually with a significant 
amount of gloss in them, however recently many latex or water -based paints have adopted the term as well. 
The term today means "hard surfaced paint" and usually is  in reference to paint brands of higher quality, floor 
coatings of a high gloss finish, or spray paints. Most enamel paints are alkyd resin based. Some enamel 
paints have been made by adding varnish to oil -based paint.  
 DRS  232: 20 20 
1                ©RSB 2020- All rights reserved  
 High gloss synthetic enamel paint — Specification  
1 Scope  
This Draft Rwanda Standard specifies the requirements for two grades of air -drying gloss enamel paints for use 
on suitably primed and uncoated steel, wood, masonry, hard board, compressed fiber board and similar 
materials used in the construction and finishing of buildings.  
2 Normativ e 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.  
ISO 4618, Paints and varnishes — Terms and definitions  
ASTM D 2371, Standard test method for pigment content of solvent reducible paints  
ASTM D 2697, Standard test method for volume non -volatile m atter in clear or pigmented coatings  
ASTM D 2805, Standard test method for hiding power of paints by Reflectometry  
ASTM D 3273, Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in 
an Environmental Chamber  
ASTM D 335 9, Standard test methods for measuring adhesion by tape test  
ASTM D 4400, Standard for test method for sag resistance of paints using a multinotch applicator  
ASTM D 610, Standard practice for evaluating degree of rusting on painted steel surfaces  
ISO 11890 -2, Paints and varnishes — Determination of volatile organic compound (VOC) content -- Part 2: Gas -
chromatographic method  
ISO 13076, Paints and varnishes — Lighting and procedure for visual assessments of coatings  
ISO 1513, Paints and varnishes — Examinati on and preparation of samples for testing  
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling  
ISO 2813, Paints and varnishes — Determination of specular gloss of non -metallic paint films at 20º, 60º and 
85º.  
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 ISO 6504 -1, Paints and varnishes — Determination of hiding power — Part 1: Kubelka -Munk method for white 
and light -coloured paints  
ISO 9117 -1, Paints and varnishes — Drying tests — Part 1: Determination of through -dry state and through -dry 
time 
ISO 9117 -3, Paints and varnishes — Drying tests — Part 3: Surface -drying test using ballotini  
RS EAS 85 -10, Methods of test for Paints, Varnishes, lacquers and enamels —Part 10: Flexibility test Substrate1  
3 Terms and definitions  
For the purposes of this standard, the te rms and definitions given in ISO 4618  and the following apply.  
3.1 
air-drying  
curing of a coating by oxidation or solvent evaporation by exposure to air without heat or catalyst  
3.2 
weathering  
surface deterioration of a coating surface during outdoor expos ure 
3.3 
specular gloss  
ratio of the luminous flux reflected from an object in the specular direction for a specified source and receptor 
angle to the luminous flux reflected from glass with a refractive index of 1.567 in the specular direction  
4 Grades  
High Gloss enamels paints shall be one of the following grades:  
a) Grade 1: high hiding; and  
b) Grade 2: regular hiding  DRS  232: 20 20 
3                ©RSB 2020- All rights reserved  
 5 Requirements  
5.1 General requirements  
5.1.1  Odour  
The paint shall not have any objectionable odour and shall not have a putrid odour during or after application.  
5.1.2  Condition in the container  
When the paint from a newly opened container is examined in accordance with ISO 1513 , it shall be free from 
lumps, loose skins, extraneous matter and colour separation. If any settlement is observed, the paint shall be 
capable of being readily redispersed to a smooth homogenous state by using a palette knife.  
5.1.3  Storage stability  
When examined in accordance with ISO 1513 , the paint shall be stable during its shelf life . 
5.1.4  Anti-fungal properties  
5.1.4.1 The paint shall not contain mercury, but when tested in accordance with ASTM D3273 , it shall provide 
fungicidal protection equivalent to 0.1 % mercury as metal by total weight of the paint. The manufacturer, when 
requested by a competent authority, shall document and prove ev idence of the technology used to provide such 
protection and laboratory analysis for fungal protection.  
5.1.4.2 The paint shall have sufficient preservatives to prevent any spoilage and shall maintain its native 
performance for a minimum of 18 months.  
5.1.4.3 When the paint is tested in accordance with RS EAS 85 –10, the paint film shall be flexible and shall 
not crack, shall not flake or show loss of adhesion.  
5.1.4.4 The paint shall not contain any carcinogens, mutagens, reproductive toxins, hazardous air pollutants 
or ozone -depleting compound as ingredients. Volatile Organic Compounds (VOC) concentration of the product 
shall not contain more than the amount specified in table -1 using the test method therein and 280 ºC as boiling 
point.  
NOTE  Volatile Organi c compounds which are commonly found in conventional paints include aldehydes, 
formaldehyde, benzene, toluene, styrene, xylene and dibutyl and biethyl phthalate, among others.  
5.1.4.5  The paint shall not contain any of the following ingredients:  
a) 1,2-dichlo robenzene;  
b) Alkyphenol ethoxylates;  
c) Formaldehyde or formaldehyde -donors;   
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 d) Phthalates; and  
e) Triphenyl tins and tributyl tins.  
5.2 Specific requirements  
5.2.1  The paint shall comply with the requirements given in Table 1, whe n tested in accordance with the 
methods described therein.  
Table 1 — Specific requirements for High gloss synthetic enamel paint  
S/N Parameters  Requirements  Test methods  
Grade 1  Grade 2  
1 Pigment. % by wet of enamel  28 – 40  28 – 40  ASTM D 2371  
2 60º Specular gloss  ≥ 70 70 ISO 2813  
3 Reflectance  ≥ 85 85 ISO 2813  
4 Anti-Sag index, min  8 8 ASTM D 4400  
5 Wet hiding power (white paint), m2/L, 
min. 10.7 8.2 ASTM D 2805  
ISO 6504 -1; 
6 Corrosion, %  0.05 0.5 ASTM D 610  
7 Adhesion (base paint thickness), µm 58 78 ASTM D 3359  
8 Drying time, h, 
max.  Surface dry time  4 4 ISO 9117 -3 
Hard dry time  16 16 ISO 9117 -1 
9 Volatile Organic Compounds, % m/m, 
max.  0.5 0.5 ISO 11890 -2 
10  Solids content, %m/m, min.  - 52 ASTM D 2697  
11 Heavy metals (Lead as Pb), ppm, 
max.  90 90 ISO 6503  
 
5.2.2  When the color of t he paint shall be compared visually with the unexposed panel in accordance with ISO 
13076,  the colour difference rating shall not be more than the units specified in table 2.  
Table 2 — Colour  difference ratings permissible after artificial we athering  
Colour  Colour ratings  
Grade 1  Grade 2  
All colours except yellow, 
orange and red.  1 2 
Yellow, orange and red  2 3 
 
6 Packaging and labelling  
6.1 Packaging  
6.1.1  The paint shall be packed in clean, dry plastic or metallic containers. In a freshly opened container, there 
shall be no rusting of the container.  
6.1.2  The container shall be strong enough to withstand normal handling conditions and shall be adequately 
sealed to prevent leakage and contamination of the contents during normal transportatio n and handling.  DRS  232: 20 20 
5                ©RSB 2020- All rights reserved  
 6.2 Labelling  
6.2.1  Each container, or label securely fixed to the container, shall be clearly, legibly and indelibly marked with 
the following information:  
a) the manufacturer’s name and address; the brand name of t he product if any, may be added ; 
b) product name as "High Gloss Enamel Paint"  or "Medium Gloss Enamel Paint";  
c) the words "Grade 1, high hiding" or "Grade 2, regular hiding", as applicable;  
d) the colour of the paint, in words or as pictorial;  
e) batch identification;  
f) date of manufacture and expiry; and  
g) net weight; and  
6.2.2  Adequate information on the following (a leaflet can be affixed on the product):  
a) the appropriate amount of product needed for a specific job;  
b) instructions for use, storage, disposal and safety requirements  
c) ventila tion requirements during paint application as well as drying period;  
d) occupational health and safety as well as emergency interventions; and  
e) proper disposal or recycling for leftover product and packaging containers.  
7 Sampling  
Sampling shall be done in  accordance with ISO 15528 . 
 
 
  
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