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Items | index | ||
According to HG/T 2841-2005 | According to Q/SDTH 0071—2019 | ||
appearance | Colorless or light yellow transparent liquid | white crystal | |
Active component (based on ATMP) /% | ≥50 | ≥95.0 | |
Amino trimethylene phosphonic acid content /% | ≥40 | ≥88.0 | |
Phosphite (based on po33 -) /% | ≤3.5 | -- | |
Phosphoric acid (based on PO43 -)/% | ≤0.8 | ≤0.8 | |
pH(1% aqueous solution) | ≤2.0 | ≤2.0 | |
Density(20℃) /g·cm-3 | ≥1.30 | -- | |
Chloride (based on Cl -)/% | ≤2.0 | ≤1.0 | |
Iron (based on Fe2+) content/mg·L-1 | ≤20.0 | ≤10.0 | |











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