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Chemical Composition of Flux (%)
	
| SiO2 | CaF | CaO | Al2O3 | R2O | FeO | S | P | 
| 34-38 | 2-5 | 48-55 | 6-9 | ≤3 | ≤1.5 | ≤0.05 | ≤0.06 | 
	
	
	