USD $100.00-150.00 / Kilogram
USD $3.00-10.00 / Kilogram
specifications |
industrial grade |
food grade |
na2s2o5%≥ |
96.0 |
68.0 |
so2%≥ |
64.0 |
64.0 |
iron(fe)%≤ |
0.005 |
0.005 |
water insolubles%≤ |
0.05 |
0.05 |
ph |
4.0-4.6 |
4.0-4.6 |
arsenic(as)%≤ |
0.01 |
0.002 |
heavy metals, as pb %≤ |
|
0.0002 |
(1) food grade: bleach agent (e.g. candies, cake, bamboo shoots, etc); loose agent (e.g. bread, cracker etc); 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 the production 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.
storage: store the product in a dry and cool place.