Sodium metabisulfite
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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Dimethylamine |
Appearance: colorless transparent liquid.
Dimethylamine ≥ 99.8%;
Monomethylamine ≤ 0.10%;
Trimethylamine ≤ 0.05%;
Ammonia ≤ 0.03%; |
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caustic soda |
Item Index
Causiu Soda flakes(NaOH)% ≥ 99
Sodium carbonate(NaCO3)% ≤ 0.5
Sodium chloride(NaCl)% ≤ 0.03
Ferric oxide(Fe2O3)% ≤ 0.005... |
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Zinc sulfate |
zinc sulfate monohydrate Zinc sulfate heptahydrate
Molecular Formula: ZnSO4 .H2O Molecular Formula:ZnSO4 .7H2O
HG2934-2000 HG/T 2326-2005
CAS... |
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Sodium Carbonate |
Indicator name Industrial-grade Food grade
Total alkali content(Na2CO3)% ≥ 99.2 99.2
Sodium chloride(NaCl)% ≤ 0.7 0.7
Iron(Fe)% ≤ 0.003... |
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DL-Methionine |
Project Name Quality indicators
Superior grade First grade
Shape White or light gray powder
DL-Methionine% ≥ 99 98.5
Loss on drying% &le... |
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