Document EjNbDZpDVwBLNdO5GqabJ8rg

Table: Alternative materials valuation Datum: 8/4/2023 OECD polymer of low concern (PLC) criteria and additional customeer related criteria OECD = Organisation for Economic Co-operation and Development Polymers currently in use Polymer composition MW, Mn, MWD Wt-% oligomer Electrical charge Reactive functional groups (RFG) Functional group equivalent weight (FGEW) Low MW leachables Water/lipid solubility,octanol water partition Particle size Polymer stability Thermal stability (vgl. Q, R) Abiotic stability Biotic stability seals: use in oxidating media seals: demand for high purity product seals: Operating Temperature: > 70 C seals: Operating Temperature: > 150 C internal in first isolation valves jacket material for power cable, esp. coax cable: High temperature Sensor protection tube liner: oleum containing media PTFE TFM-PTFE PVDF (Polyvinylidenfluoride) FFKM (e.g. trade name: Kalrez) Alternative Materials Graphite Aramid, NBR (Nitrile Butadien Rubber) Vulcanised rubber Vermiculite (mica slate) UHMW-PE PE PVC m m m m m m m m m m m m tube liner: Operating Temperature > 70 C internals in phase separators protective clothes and impregnation according to DIN EN 13034 Symbols m Meaning Accept Not fulfilled Accept with limitations Nearly not fulfilled Not available Legend for OECD criteria Polymer composition Polymer composition, structure & elemental composition; including CAS no. MWN,uMmnb,eMr aWveDrage molecular weight and oligomer content are used criteria for PLC assessment. MWD --> polydispersity index Wt-% oligomer Weight % of oligomers < 1000 Da ElecEtrl.icCahl .cohrariogneic character can be: anionic, cationic, amphoteric, nonionic; cationic polymers associated with aquatic toxxicity Reactive functional groups (RFG) Atom or associated group of atoms in a chemical structure that is intended or can be reasonable expected to undeergo facile chemical reaction Functional group equivalent weight (FGEW) FGEW is defined as the ratio of Mn to the number of functional groups in the polymer Low MW leachablAesre chemical molecules, either inorganic or organic, that migrate (i.e. leach) out of the polymer Water/lipid solubility,octanol water partition Water solubility = extent to which a compound will dissolve in water; negligible water solubility < 1x10E-6 mg/L = 1 ppt Particles Pthaarticalreessimzeall enough to reach the deep lung upon inhalation are associated with adverse health effects. Polymer particles should be > 5 m Resistance to physical,Pcohleymmiecrals,tbaiboiloitgyical transformation. Breaking down into smaller particles is ccritical. Molecules with Mn<1000 Da are capable of crossing cell membranes ThTeormbaelasstasebsilsiteyd when used as intended or in extreme temperature during dosposal. Theermal stability testing may involve TGA Abiotic stability Polymers are stable, monomers are not. Abiotic degradaton may involve sunlight, water or oxygen. BIsioatiscsestsasebdilitbyy whether the polyymer is degraded by microorganisms under oxygenated (aerobic) or anoxic ( anaerobic) conditions Legend for criteria concerning using PFAS in our plants Columns O, P, Q, R Properties demanded for seals in different operating conditions Column S Data refers to valves, specially "First isolation valves" Columns T, U Data refers to power cables and instrumentation of plants Columns V, W Data refers to piping of plants Columnn X Data refers to internals of phase separators Column Y Data refers to protective clothes and their treatment: It is necessary to reimpregnate them with PFAS-containing spray after washing in order to keep their chemical refusing properties.