1,3-PS also called 1,3-Propane Sultone,the Cas No.is 1120-71-4.And the molecular formular is C₃H₆SO₃. It is colorless to yellowish liquid
or crystal and there are 2 kinds of assay 99%(Industry Grade) or 99.9%(Electronic Grade) to choose. 
Uses:
1.1,3-PS is an important pharmaceutical intermediate,also used in brighteners,dyes,bionic surfactants,sulfonates;In addition,it can improve the cycle life and storage stability when added to the non-hydrolysate of lithium ion battery.
2.Used as Antibacterial synergist, combined with sulfa drugs to enhance antibacterial effect, also used for poultry coccidiosis infection, intestinal bacterial infection; drinking water agent.
3.It belongs to functional fine chemical new materials. It can react with many kinds of compounds under very mild conditions, and accurately provide sulfonic acid groups, thereby endowing these compounds with new properties (such as hydrophilicity, antistatic properties, etc.), and is an excellent general-purpose sulfonic acid It is also a key raw material for the synthesis of important electroplating additive intermediates PPS, UPS, DPS, MPS, ZPS, POPS, SP and other products.

Chemical name:1,3-PS 
Other name:1,3-Propane Sultone
Molecular formula:C₃H₆SO₃
Molecular weight:122.14
Flash point:>230 °F
CAS NO.:1120-71-4
Appearance: Colorless to yellowish liquid or crystal
Assay: 99%(Industry Grade) ,99.9%(Electronic Grade)
Water solubility:Slightly soluble
Storage conditions:Inert atmosphere,Room Temperature
Package:25kg/drum,200kg/canister,17000kg/ISO TANK