3-phenylsulfonylbenzenesulfonic acid potassium salt KSS

FR-KSS is extremely effective as a flame retardant additive with premium performance in polycarbonate at very low additive levels.
FR-KSS, a non-halogenated product, is said to provide excellent FR effectiveness at fractional loading levels of less than 1 wt% in a PC formulation while maintaining the transparency inherent in the thermoplastic.A white powder, it is the potassium salt of a complex of diphenyl sulfone sulfonate and diphenyl sulfone disulfonate.
For most effective incorporation it is recommended that the additive be initially dispersed into a 10% or more masterbatch and then compounded into the final plastic blend. Dispersion can be achieved effectively with typical polycarbonate processing equipment.

3-phenylsulfonylbenzenesulfonic acid potassium salt

Chemical name: 3-Phenylsulfonylbenzenesulfonic acid potassium salt

Chemical Structure:

Brand Name: YCFR-KSS

Formula: C₁₂H₉KO₅S₂

CAS Number: 63316-43-8

MW: 336.0

Product Data Sheet.

1. Chemical Name	:3-Phenylsulfonylbenzenesulfonic acid potassium salt
2. Molecular Formula	: C12H9KO5S2
3. Molecular Weight	: 336.0
4. CAS No.	: 63316-43-8
5. Appearance	: White Powder
6. KSS by HPLC(w/w%)	:70~80
7. DKSS by HPLC(w/w%)	: 18~24
8. DPS by HPLC(w/w%)	: 0.50↓
9. Iron Content (ppm)	: 5.0↓
10. Isomers and Unknowns by HPLC(w/w%)	:5.0↓
11. PH (5% in H2O)	: 6.7~7.3
12. Granularity(mesh)	: 200↑
13. Color（Pt-Co）	: 30↓
14. Sulphate Content(w/w%)	: 0.5↓
15. Water Content(w/w%)	: 1.5↓

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flame retardant masterbatches