PS (C3H3NaO3S) Sodium propynesulfonate CAS No:55947-46-1 Appearance: Clear yellowish liquid Assay: 20% Density g/cm3 (20): 1.21~1.29 PH: 0.6~2.6 Refractive Index(20): 1.3900~1.3990 Addition level: 50~150mg/l Consumption: 12g/ KAH Application: Brightener, leveling agent, dispersant, impurities tolerance agent for low current region for nickel plating