. /.  WORLD TRADE  
ORGANIZATION  G/TBT/N/CHN/153 
10 October 2005 
 (05-4574) 
Committee on Technical Barriers to Trade Original:   English 
 
NOTIFICATION 
 
The following notification is being circ ulated in accordance with Article 10.6. 
 
1. Member to Agreement notifying:   THE PEOPLE’S REPUBLIC OF CHINA  
If applicable, name of local government involved (Articles 3.2 and 7.2):         
2. Agency responsible:   Standardization Administration of China (SAC) 
Name and address (including telephone and fax numbers, e-mail and web-site 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):   Calcium magnesium 
phosphate (ICS:  23.080) 
5. Title, number of pages and langu age(s) of the notified document:   National Standard of 
the P.R.C., Calcium Magnesium Phosphate (14 pages, in Chinese) 
6. Description of content:   The National Standard “Calcium Magnesium Phosphate”, is the 
revised edition of the chemical industry standard “Calcium Magnesium Phosphate”.  It sets 
the technical requirements, testing methods, inspection procedures, marking, packages, 
transport and storage of calcium magnesium phosphate manufactured by high temperature fusing in blast furnace or electric cooker, water quenching, drying and grinding of 
phosphorus rock and magnesium-silicone mineral.   They also include calcium magnesium 
phosphate with other accretion. They shall conf orm to the requirements listed in Table 1. 
Table 1  Qualifications of "Calcium Magnesium Phosphate"  % 
Norm 
Item 
Excellent Typical Guarantee 
effective phosphorus pentoxide (P 2O5)  % by mass  
≥ 18.0 15.0 12.0 
moisture(H 2O) % by mass                                        
≤ 0.5 
basicity (CaO) % by mass                                         
≥ 45.0 
solvable silicon (SiO 2) % by mass                            
≥ 20.0 
effective magnesium (MgO) % by mass                   
≥ 12.0  
particle size distribution particles pass through the 
sieve (0.25mm)  %        ≥ 80 G/TBT/N/CHN/153 
Page 2  
 
 This National Standard is mandatory as stated in the articles, of which the requirements in 
Chapter 3 (see Table 1, except basicity, solv able silicon and effective magnesium), the 
inspection procedures in Chapter 5, the marki ng in Chapter 6, and section 7.1 in Chapter 7 
on packages, transport and storage are ma ndatory, and the remaining articles are 
recommended.  This National Standard is  applied to calcium magnesium phosphate 
produced and sold within the territory of the P.R.C. 
7. Objective and rationale, including the nature of urgent problems where applicable:    
 To regulate the market 
8. Relevant documents:   - 
9. Proposed date of adoption:   
Proposed date of entry into force:   90 days after circulation by WTO Secretariat 
6 months after adoption 
10. Final date for comments:   60 days after circulation by WTO Secretariat 
11. Texts available from:  National enquiry point [  X ] or address, telephone and fax 
numbers, e-mail and web-site addresses, if available of the other body: