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113.2 - Portland Cement Clinkers (solid form)

These SRMs provide certified values for the abundance of major phases in cement clinkers, i.e., the percentages of alite (C3S), belite (C2S), aluminate (C3A), and ferrite (C2(A,F)). NOTE: In cement chemist notation, C=CaO, S=SiO2, A=Al2O3 and F=Fe2O3.

PLEASE NOTE: The tables are presented to facilitate comparisons among a family of materials to help customers select the best SRM for their needs. For specific values and uncertainties, the certificate is the only official source.


- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only


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  2686a 2687a 2688
Status   >> Out of Stock Now Selling Now Selling
Description   >> Portland Cement Clinker Portland Cement Clinker Portland Cement Clinker
  Detail Certificate MSDS Detail Certificate MSDS Detail Certificate MSDS
Unit Size   >> 4 vials x 7 g 5 vials x 8 g 3 vials x 10 g

Component (mass fraction, in %)
Alite (C3S) 63.35 57.88 64.95
Alkali Sulfates 0.87    
Aluminate (C3A) 2.46 9.56 4.99
Aluminum oxide (Al2O3) 3.70 5.470 4.90
Aphthitalite 0.74 0.16  
Arcanite 0.27 0.68  
Belite (C2S) 18.68 24.70 17.45
Calcium oxide (CaO) 64.09 66.172 66.50
Ferrite (C2AF) 10.76 6.27 12.20
Free CaO   0.51 0.2
Iron oxide (Fe2O3) 3.65 2.403 4.07
Loss on Ignition at 1000 ºC 0.51 0.49 0.21
Magnesium oxide (MgO) 4.81 1.035 0.98
Manganese trioxide (Mn2O3) 0.13 0.031 0.03
Periclase 3.40 0.25  
Phosphorus pentoxide (P2O5) 0.07 0.524 0.08
Potassium oxide (K2O) 0.49 0.702 0.35
Silicon dioxide (SiO2) 21.71 22.07 22.68
Sodium oxide (Na2O) 0.20 0.103 0.11
Strontium oxide (SrO) 0.04 0.090 0.13
Sulfur trioxide (SO3) 0.56 0.695 0.31
Titanium dioxide (TiO2) 0.22 0.246 0.24
Total 100.18   100.60
Zinc oxide (ZnO)   0.028  

- Certified values are normal font
- Reference values are italicized
- Values in parentheses are for information only