Nanjing Senking Chemical Co., Ltd.
Keywords: Organic chemical materials Inorganic chemical materials Electronic chemicals

    • Products

    Products

    Sodium hydrosulfite
    • Specifications
    • Basic Information
    • Applications
    • Packaging, storage

    　
    Quality standard (industrial grade) HG/T 2074-1991 JIS K 1476-1995
    Quality standard (food grade) GB 2682-1995
    Molecular formula Na2S2O4
    Appearance and properties White crystalline powder, no odor or has sulfur dioxide odor

    ◎Technical index :

     

    Item

    90%

    88%

    85%

    Food grade

    Na2S2O4

     90%

     88%

     85%

     85%

    Iron (Fe)

     20ppm

     20ppm

     20ppm

     20ppm

    Zinc (Zn)

     1ppm

     1ppm

     1ppm

     1ppm

    Clarity

    Clear

    Clear

    Clear

    Clear

    EDTA

    		 - - -

    Qualified

    Arsenic (As)

    		 - - -

     1ppm

    Other heavy metals (Pb)

    		 - - -

     1ppm

    Formate (HCHO)

    		 - - -

     0.05%

    Water insoluble

     0.05%

     0.05%

     0.05%

    -

    Shelf life (month)

    12

    12

    12

    12

     

    Typical analysis 

     

     

    90%

    88%

    85%

    Food grade ( 85%)

    Na2S2O4

    90.89%

    89.0%

    86.51%

    86.94%

    Na2S2O5

    6.59%

    6.68%

    6.89%

    6.57%

    Na2CO3

    1.69%

    3.3%

    5.7%

    5.59%

    Na2S2O3

    0.17%

    0.19%

    0.42%

    0.39%

    Na2SO3

    0.21%

    0.20%

    0.38%

    0.35%

    Iron (Fe)

    15ppm

    13ppm

    18ppm

    11ppm

    Zinc (Zn)

    -

    -

    -

    0.13ppm

    Clarity

    -

    -

    -

    Clear

    EDTA

    -

    -

    -

    Qualified

    Arsenic (As)

    -

    -

    -

    0.28ppm

    Heavy metal (Pb)

    -

    -

    -

    0.24ppm

    HCHO

    -

    -

    -

    0.03ppm

    Water insoluble

    0.004%

    0.007%

    0.006%

    -

     

     

     

    Packing:

    1) Iron drum lied with double-layer PE film bag
    　 Net weight is 15KG/20KG/25KG/50KG/100KG/200KG 
    　　　　

    2) Domestic recoverable package, 500KG/1200KG 
    Foreign recoverable package, 1800KG

     

    Back
    Copyright(C)2017, Nanjing Senking Chemical Co., Ltd. All Rights Reserved.Supported byChinaChemNet ChemNet Toocle Copyright Notice