Пиросернистокислый натрий
Test items Refined High-purity grade Food-grade Industrial-grade
Sodium metabisulfite % ≥ 98.5 98 97.5 97.0
Iron Fe % ≤ 0.0005 0.001 0.0015 0.002
Water insoluble matter % ≤ 0.005 0.01 0.02
Arsenic As % ≤ 0.00005 0.0001 0.0001 0.0001
Definition Clarification Clarification Clarification
Lead Pb % ≤ 0.00005 0.0005 0.0002
NaCl % ≤ 0.012
pH value ≤ 4.0-4.6
Packaging: 25kg、50kg、1000kg Weaving.
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Цианид натрия | Test items Index Shape Lump Sodium cyanide (NaCN) % ≥98.0 Sodiun hydroxide (NaOH) % ≤0.5 Sodium carbonate (Na2CO3) % ≤0.5 Water (H2O... |
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Метилен хлористый (метиленхлорид, метилен хлорид) | 检测项目 指标 二氯甲烷 % ≥ 99.95 水 % ≤ 0.01 酸(以HCl计) % ≤ 0.0004 色度 Hazen单位 （Pt-Co色号） ≤ 10 蒸发残渣 % ≤ 0.0005 添加稳定剂的量不计入二氯甲烷的质量分数。 包装:净重为... |
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Триоксид мышьяка | Main content Other impurities Arsenic trioxide Iron Lead Chlorine Chromium Cadmium Water As2O3 Fe Pb Cl Cr Cd H2O ≥ ≤ ≤ ≤ ≤ ≤... |
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