Dangosyddion Ansawdd ar gyfer Calsiwm Fformad Gradd Porthiant
Dangosyddion Ansawdd ar gyfer Gradd Porthiant Calsiwm FFORMATAU
Dyma'r manylebau ansawdd ar gyfer fformad calsiwm gradd porthiant (yn ôl gradd cynnyrch):
Fformad calsiwm [Ca(HCOO)₂]: ≥ 99.0% (gradd premiwm), ≥ 98.0% (gradd gyntaf), ≥ 96.0% (gradd gymwys)
Cyfanswm calsiwm (fel Ca²⁺): ≥ 30.4% (gradd premiwm), ≥ 30.1% (gradd gyntaf), ≥ 29.0% (gradd gymwys)
Fformad calsiwm Mater anhydawdd mewn dŵr: ≤ 0.15% (gradd premiwm), ≤ 0.20% (gradd gyntaf), ≤ 0.30% (gradd gymwys)
Gwerth pH fformad calsiwm (hydoddiant dyfrllyd 10%): 7.0–7.5 (gradd premiwm), 7.0–7.5 (gradd gyntaf), 6.5–7.0 (gradd gymwys)
Colled wrth sychu: ≤ 0.5% (gradd premiwm), ≤ 1.0% (gradd gyntaf), ≤ 1.5% (gradd gymwys)
Fformad calsiwm Metelau trwm (fel Pb²⁺): ≤ 0.002% (gradd premiwm), ≤ 0.002% (gradd gyntaf), ≤ 0.004% (gradd gymwys)
Arsenig (fel As³⁺): ≤ 0.0005% (gradd premiwm), ≤ 0.0005% (gradd gyntaf), ≤ 0.001% (gradd gymwys)