2018/5/16
Also known as:disodiummetabisulfite; disodiumpyrosulphite; fertisilo; metabisulfitedesodium; Sodiummetabisufite; sodium-metabisulfite(na2-s2o5);sodiumpyrosulfite(na2s2o5); Sodium dissulfite; Sodium disulphite; Sodium pyrosulphite
Molecular Formula: Na2S2O5 Molecular Weight: 190.10 Quality Standard: Industrial Grade:HG/T2826-2008 Food Grade: GB1893-2008
Items |
National Standard GB1893-2008 |
Usual Values |
Main content (Na2S2O5), % |
≥96.5 |
≥97.5 |
Iron content (Fe), % |
≤0.003 |
≤0.0015 |
Clarity |
Passes test |
Clear |
Heavy metal content (Pb), % |
≤0.0005 |
≤0.0002 |
Arsenic content (As), % |
≤0.0001 |
≤0.0001 |
Items | Indicators |
Main content (Na2S2O5), % | ≥98 |
Iron content (Fe), % | ≤0.001 |
Clarity | Clear |
Insoluble matter content, % | ≤0.01 |
Heavy metal content (Pb), % | ≤0.0005 |
Arsenic content (As), % | ≤0.0001 |
PH value | 4.2~4.8 |
Items | Indicators |
Main content (Na2S2O5), % | ≥99 |
NaCl content, % | ≤0.010 |
Iron content (Fe), % | ≤0.0005 |
Insoluble matter content, %span> | ≤0.005 |
Clarity | Clear |
Arsenic content (As), % | ≤0.00005 |
Heavy metal content (Pb), % | ≤0.00005 |
Items |
National Standard HG/T2826-2008 |
Usual Values |
|
Premium Grade |
First Grade |
||
Main content (Na2S2O5), % |
≥96.5 |
≥95.0 |
≥97.0 |
Iron content (Fe), % |
≤0.005 |
≤0.010 |
≤0.002 |
Insoluble matter content, % |
≤0.05 |
≤0.05 |
≤0.02 |
Arsenic content (As), % |
≤0.0001 |
— |
≤0.0001 |