G/TBT/N/RWA/620  
21 January 2022  
(22-0517) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
  NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  RWANDA   
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Rwanda Standards Board (RSB)  
KK 15 Rd, 49  
P.O.BOX 7099, Kigali, Rwanda  
Tel: +250 788303492  
Email: info@rsb.gov.rw   
Website: www.rsb.gov.rw  
Name and address (including telephone and fax  numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
3. Notified under Article 2.9.2 [X], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Pigments 
and extenders (ICS 87.060.10)  
5. Title, number of pages and language(s) of the notified docu ment:  DRS 495 -1: 
2022, Organic pigments for paints — Specification — Part 1: Azo pigments (15 page(s), 
in English)  
6. Description of content:  This Draft Rwanda Standard specifies the requirements, 
sampling and test methods for five (5) organic pigments, n amely, toluidine red, 
chlorinated p -nitroaniline red, arylamide yellow G and 10 G and para red used in paint 
industry.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Consumer information, labelling; Prevention of dec eptive practices and 
consumer protection; Protection of human health or safety; Protection of the 
environment; Quality requirements; Reducing trade barriers and facilitating trade; Cost 
saving and productivity enhancement  
8. Relevant documents:   
1. ISO 18451 -1, Pigments, dyestuffs and extenders — Terminology — Part 1: 
General terms  
2. ISO 18451 -2, Pigments, dyestuffs and extenders — Terminology — Part 2: 
Classification of colouring materials according to colouristic and chemical 
aspects  G/TBT/N/RWA/620  
 
- 2 - 
 
  3. ISO 787 -7, Gener al methods of test for pigments and extenders — Part 7: 
Determination of residue on sieve — Water method — Manual procedure  
4. ISO 787 -2, General methods of test for pigments and extenders — Part 2: 
Determination of matter volatile at 105 degrees  
5. C ISO 787 -3, General methods of test for pigments and extenders — Part 3: 
Determination of matter soluble in water — Hot extraction method  
6. ISO 787 -5, General methods of test for pigments and extenders — Part 5: 
Determination of oil absorption value  
7. ISO 787 -25, General  methods of test for pigments and extenders — Part 25: 
Comparison of the colour, in full shade systems, of white, black and coloured 
pigments — Colorimetric method  
8. ISO 787 -16, General methods of test for pigments and extenders — Part 16: 
Determination of r elative tinting strength (or equivalent colouring value) and 
colour on reduction of coloured pigments — Visual comparison method  
9. ISO 787 -15, General methods of test for pigments and extenders — Part 15: 
Comparison of resistance to light of coloured pigment s of similar types  
10. ISO 787 -22, General methods of test for pigments and extenders — Part 22: 
Comparison of resistance to bleeding of pigments  
11. ISO 787 -21, General methods of test for pigments and extenders — Part 21: 
Comparison of heat stability of pigments using a stoving medium  
12. RS OIML R 87, Quantity of product in pre -packages  
13. ISO 15528, Paints, varnishes and raw materials for paints and varnishes — 
Sampling  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  60 days from notification  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
KK 15 Rd, 49  
Toll Free: 3250  
Tel: +250 788303492  
Email: info@rsb.gov.rw  
Website: www.rsb.gov.rw  
P.O.BOX 7099, Kigali, Rwanda  
https://members.wto.org/crnattachments/2022/TBT/RWA/22_0679_00_e.pdf