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        Mainly produces a series of intermediate products based on naphthalene and benzene

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        PRODUCTS

        Sodium thiosulfate
        Synonyms Sodium Thiosulfate (Big Soda)
        Molecular weight 248.18
        Molecular Formula

        Na2S2O3.5H2O

        Descriptions

        Sodium Thiosulfate, the popular name is big soda, Hypo, belongs in transparent single crystal system.it is adourless and salty. Its specific gravity is 1.729. When be heated over 100°C ,it losts the 5 crystal water. It is easily soluble in water and unsoluble in alcohol. It will be decomposed in acid liquid and have strong reducibleness. It is easily dehydration when dry air over 33°C and deliquescence in moist air.

        Specification
        Index
        High grade
        1st grade
        Purity %min.
        99
        98
        Water insolubles %max.
        0.01
        0.03
        Sulphur matter (by S) %max.
        0.001
        0.003
        Fe %max.
        0.001
        0.003
        PH (200g/L solution)
        6.5-9.5
        6.5-9.5
        Uses Extra Best Best specification Use for fixer, exectnoplate, purify water, reducing agent in chemical industry,etc.
        Packing In plastic woven bag of 50Kgs nett each with plastic lining.
        Notes Stock in dry, cold storehouse, avoid sunlight and rain at transportation

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