Content 70 Batch NO. 16132 Quality standard National standard CAS No. 16721-80-5 Items Standards Result NaHS 70.0% 70.56% Na2S% Â 2.50 % 1.33% Na2SO3% 1.0 % 0.91% Fe% 0.002% 0.001% Na2CO3 2.0 % 0.53 % Water insoluble% 0.2% 0.05% Conclusion (QUALIFIED)
