Borax
Molecular formula: Na2b4o7.10h2o
Molecular weight: 381.36
package: 25kg/bag
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na2b4o7.10h2o	99.5%min.
carbonate (co2)	0.10%max.
insoluble matter in water	0.04%max.
sulfate (so42-)	0.10%max.
sodium chloride (cl)	0.03%max.
iron (fe)	0.002%max.