| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
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| Item | Industrial Grade | Food Grade | High Purity Grade | Meidical Grade |
| Main content(Na2S2O5) | ≥96.5 | ≥97.5 | ≥98 | ≥99 |
| Fe(As content Fe) | ≤0.005 | ≤0.0015 | ≤0.001 | ≤0.0005 |
| Clarity | Clear | Clear | Clear | Clear |
| Water-Insoluble | ≤0.05 | ≤0.02 | ≤0.01 | ≤0.005 |
| Heavy metal content (Pb) | ≤0.0002 | ≤0.0002 | ≤0.0005 | ≤0.0005 |
| Arsenic content (As) | ≤0.0001 | ≤0.0001 | ≤0.0001 | ≤0.0005 |
| NaCl content | - | - | - | ≤0.010 |
| PH | 4.2-4.8 | |||
(1) Food Grade: Bleach agent (e.g. candies, cake,
bamboo shoots, etc); Loose agent (e.g. bread, crackeretc); Antiseptic and germicide (e.g. fruit juice, tinned
food, brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).
(2) Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde. The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .
(3) Pharmaceutical Grade: In chemical synthesis in theproduction of acrylic fibre, vitamin K, vitamin A,
pharmaceutical intermediates, etc.
(4) Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of
fixing bath dose.
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