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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оксид цинка | Test items Indirect method Direct method Zinc oxide(counted by dried substances )% ≥ 99.7 99.5 Metal ( Zn ) % ≤ None None Lead oxide( Pb ... |
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Сульфат натрия безводный | Test items Food-grade High-purity grade Industrial-grade Sodium sulfite (Na2SO3) % ≥ 97 98 97 Iron Fe % ≤ 0.001 0.001 0.003 Free Alkali (... |
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Калия цианид | Test items Index Shape Lump Potassium cyanide （KCN） % ≥99.0 Potassium hydroxide（KOH） % ≤0.3 Potassium carbonate(K2CO3）% ≤0.4 Potassi... |
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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... |
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Полиэ фирполиол | Model Hydroxyl value Water content Acid value pH value Potassium Chromaticity Viscosity Degree of unsaturation mgKOH/g ％ mgKOH/g mg/Kg APHA mPa.s/... |
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