We insist on offering high quality production with good business concept, honest sales and the best and fast service. it will bring you not only the high quality product and huge profit, but the most significant is to occupy the endless market for Premium Sodium sulfide Chemical for Water Treatment Solutions, We sincerely welcome the two overseas and domestic business enterprise associates, and hope to operate along with you in the around long term!
We insist on offering high quality production with good business concept, honest sales and the best and fast service. it will bring you not only the high quality product and huge profit, but the most significant is to occupy the endless market for , As the world economic integration bringing challenges and opportunities to the xxx industry, our company , by carrying on our teamwork, quality first, innovation and mutual benefit, are confident enough to offer our clients sincerely with qualified products, competitive price and great service, and to build a brighter future under the spirit of higher, faster, stronger with our friends together by carrying on our discipline.













Sodium sulfide Standardization Method:
Pipette 25.00 mL of the iodine stock solution and titrate with 0.10 mol/L sodium thiosulfate solution. When the solution changes from reddish-brown to pale yellow, add 5 mL of starch solution and continue titration until the blue color just disappears.Sodium sulfide.