. /.  WORLD TRADE  
ORGANIZATION  G/SPS/N/CAN/243 
22 April 2005 
 (05-1660) 
Committee on Sanitary a nd Phytosanitary Measures Original:   English/ 
 French 
 
 
 
NOTIFICATION  
 
1. Member to Agreement notifying:   CANADA  
If applicable, name of local government involved: 
2. Agency responsible:   Pest Management Regulatory Agency (PMRA), Department of 
Health 
3. Products covered (provide tariff item numbe r(s) as specified in national schedules 
deposited with the WTO; ICS numbers should be provided in addition, where applicable):  Lambda-cyhalothrin (ICS: 65.100.10, 67.120) 
4. Regions or countries likely to be affected, to the extent relevant or practicable:  not 
stated  
5. Title, language and number of pages of the notified document:   Proposed Amendment to 
the Food and Drug Regulations (1443 - lambda -cyhalothrin) (available in English and 
French;  pages 1160-1163). 
6. Description of content:   
The Pest Management Regulatory Agency (P MRA) of Health Canada has recently 
approved an application to amend the regist ration of lambda-cyhalothrin, previously 
identified in the Food and Drug Regulations  as cyhalothrin-lambda, in order to allow its 
use for the control of biting lice, sucking lice, horn flies and Rocky Mountain wood ticks on beef cattle and calves.  This proposed regulatory amendment would establish Maximum 
Residue Limits (MRLs) for residues of lambda-cyhalothrin and its epimer resulting from 
this use in fat and meat by-products of cattle, goats, hogs, horses and sheep, in order to 
permit the sale of food containing these residues.  
After the review of all available data, the PMRA has determined that MRLs for lambda-
cyhalothrin, including its epimer, of 1 p.p.m.  in fat of cattle, goats, hogs, horses and sheep, 
and 0.2 p.p.m. in meat by-products of ca ttle, goats, hogs, horses and sheep would not pose 
an unacceptable health risk to the public.  This proposed regul atory amendment would 
change the common chemical name of cyhaloth rin-lambda to lambda-cyhalothrin in order 
to comply with international nomenclatur e conventions.  This proposed regulatory 
amendment would also amend the chemical na me of the substance to include lambda-
cyhalothrin's epimer. 
7. Objective and rationale:  [ X ] food safety, [   ] animal health, [   ] plant protection, 
[   ] protect humans from animal/plant pest or disease,  [   ]  protect territory from other 
damage from pests G/SPS/N/CAN/243 
Page 2  
 
 8. International standard, guideline or recommendation:  
[   ] Codex Alimentarius Commission, [   ] World Organization for Animal Health 
(OIE), [   ] International Plant Protection Convention, [ X ] None  
If an international standard, guideline or recommendation exists, give the appropriate 
reference and briefly identify deviations:    
9. Relevant documents and language(s) in which these are available:  Canada Gazette, Part 
I, 9 April 2005 (available in English and French). 
10. Proposed date of adoption:   Normally within 5 to 8 mont hs of publication in the Canada 
Gazette, Part I. 
11. Proposed date of entry into force:   On the date the measure is adopted. 
12. Final date for comments:  23 June 2005 
Agency or authority designated to handle comments:  [   ] National notification 
authority, [ X ] National enquiry point, or  address, fax number and E-mail address (if 
available) of other body:    
13. Texts available from:  [   ] National notificati on authority, [ X ] National enquiry point, 
or address, fax number and E-mail address (if available) of other body:   
The electronic version of the regulat ory text can be downloaded at: 
http://canadagazette.gc.ca/partI/2005/20050409/pdf/g1-13915.pdf