Quality Indicators for Feed-Grade Calcium Formate

Quality Indicators for Feed-Grade Calcium Formate
The quality specifications for feed-grade calcium formate (by product grade) are as follows:
Calcium formate [Ca(HCOO)₂]: ≥ 99.0% (premium grade), ≥ 98.0% (first grade), ≥ 96.0% (qualified grade)
Total calcium (as Ca²⁺): ≥ 30.4% (premium grade), ≥ 30.1% (first grade), ≥ 29.0% (qualified grade)
Calcium formate Water-insoluble matter: ≤ 0.15% (premium grade), ≤ 0.20% (first grade), ≤ 0.30% (qualified grade)
Calcium formate pH value (10% aqueous solution): 7.0–7.5 (premium grade), 7.0–7.5 (first grade), 6.5–7.0 (qualified grade)
Loss on drying: ≤ 0.5% (premium grade), ≤ 1.0% (first grade), ≤ 1.5% (qualified grade)
Calcium formate Heavy metals (as Pb²⁺): ≤ 0.002% (premium grade), ≤ 0.002% (first grade), ≤ 0.004% (qualified grade)
Arsenic (as As³⁺): ≤ 0.0005% (premium grade), ≤ 0.0005% (first grade), ≤ 0.001% (qualified grade)

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