Trade name:PN Chemical name:Hydroxymethanesulfoic acid, monosodium salt Molecular formula:CH3NaO4S CAS No.:870-72-4 Assay:28% 99% Appearance:colorless and transparent liquid ; White acicular crystal related density@20°C:1.20-1.25 PH value:7(min) refractive index@20°C:1.3700-1.3830 Application:Leveling agent, brightener