DL-Метионин
Project Name Quality indicators
Superior grade First grade
Shape White or light gray powder
DL-Methionine% ≥ 99 98.5
Loss on drying% ≤ 0.3 0.5
Chloride (as NaCl)% ≤ 0.2 0.2
Heavy metals (Pb total more than) mg/kg ≤ 20 20
Arsenic (as As) mg/kg ≤ 2 2
Packaging: Products is packed in plastic bag, each bag is 25kg net weight. The bag should divide into three layers, the outer layer is polyethylene composite cloth, the central layer is Kraft paper, and the inner layer is low density polyethylene film. Or according to the user’s requirements and also conforms to safety rules/standards valid in our country in packing.
Другие товары поставщика
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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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фтористый водород |
HF:≥99.95%;
H2O:≤0.03%;
SO2:≤0.007%;
H2SO4:≤0.005%;
H2SiF6:≤0.010%. |
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Серная кислота |
Item Index
Concentrated sulfuric acid Fuming sulfuric acid
Sulphuric acid(H2SO4)％ ≥ 92.5or98.0 -
Free sulfur trioxide(SO4)％ ≥ - 20.0or25.... |
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Соляная кислота |
Item Index
Total acidity（HCI） ≥ 31.0
Iron（Fe） ≤ 0.002
Residue on ignition ％ ≤ 0.05
Free chlorine（CI）％ ≤ 0.004
Arsenic(As)％ ≤ 0.... |
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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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