Polymers & Resins
REACH
Polyphenylene sulfide
CAS Number
25212-74-2
EC Number
607-869-0
What is Polyphenylene sulfide?
Polyphenylene sulfide (CAS 25212-74-2), commonly abbreviated as PPS, is a high-performance engineering thermoplastic. Also known as poly(thio-1,4-phenylene).
Where is Polyphenylene sulfide used?
- Automotive: glass- or mineral-filled grades for fuel system components and pump housings
- Electronics: connector housings, relay components, and SMT-compatible parts
- Aerospace and defense: structural brackets, fluid handling components, and radomes
- Industrial filtration membranes and specialty textiles: films, fibers, and coatings
- It delivers exceptional chemical resistance and dimensional stability under continuous high-temperature service.
Good to know: Standard commercial grades are differentiated by melt flow, crosslink level, and filler content rather than pharmacopeial specifications.
Commercial specifications
- Compounded grades available for specific targets
Other Names (Synonyms)
Poly(p-phenylene sulfide)|6,7-difluoro-17-hydroxy-2-(2-methylphenyl)spiro[9-oxa-1,14,21-triazatetracyclo[12.7.1.03,8.016,21]docosa-3(8),4,6,11,16,19-hexaene-13,1'-cyclobutane]-15,18-dione|Poly(thio-1,4-phenylene)|Golpanol pps|Poly(phenylene sulfide)|E0780
What are the physical properties of Polyphenylene sulfide?
Melting Point 285 °C (approx)
Density 1.36 g/cm³ (crystalline) @ Temp: 25 °C
Form powder
Which trade and regulatory codes apply to Polyphenylene sulfide?
Storage Class 11 - Combustible Solids
WGK (Germany) 3