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

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                  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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