ITEM SUPER FIRST QUALIFIED PURITY (Na2CO3) 97.0%MIN. 96% MIN. 93.0%MIN. Fe 0.003%MAX. 0.005%MAX. 0.01%MAX. WATER INSOLUBLES 0.02%MAX. 0.03% MAX. 0.05%MAX. FREE ALKAL 0.10%MAX. 0.40% MAX. 0.60%MAX. Na2SO4 2.5%MAX. NaCL 0.10%MAX.
USES: IT IS USED AS A DESOXYDATING OR BLEACHING AGENT FOR PRINTING AND DYEING INDUSTRY, AS A DEVELOPER FOR PHOTOGRAPHIC INDUSTRY. AS A LIGNIN-REMOVING AGENT FOR PAPER INDUSTRY, AS A STABILIZER FOR SYNTHETICFIBER FOR TEXTILE INDUSTRY, AS A REDUCING AGENT FOR CHEMICAL INDUSTRY, OR FOR ELECTROPLATING INDUSTRY ETC.