| HS Code | 973887 |
| Density | 0.905 g/cm³ |
| Melt Flow Rate | 3.0 g/10 min |
| Tensile Strength At Yield | 34 MPa |
| Elongation At Yield | 11% |
| Flexural Modulus | 1450 MPa |
| Izod Impact Strength Notched 23 C | 4 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 100 °C |
| Heat Deflection Temperature 1 8 Mpa | 60 °C |
| Vicat Softening Temperature | 153 °C |
| Rockwell Hardness | R 100 |
As an accredited SABIC PP 500P factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SABIC PP 500P polypropylene is supplied in 25 kg heat-sealed polyethylene-lined bags, ensuring product purity and safe handling. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with SABIC PP 500P polypropylene, palletized bags secured safely for efficient, stable transport. |
| Shipping | SABIC PP 500P, a polypropylene resin in solid pellet form, is non-hazardous and not regulated as dangerous goods for shipping. It transports safely in 25 kg bags, bulk bags, or silo containers. Protect from moisture, heat, and contamination, and store in a dry, well-ventilated area during transit. |
| Storage | Store SABIC PP 500P in a cool, dry, clean, and well-ventilated area. Keep it away from direct sunlight, heat sources, open flames, and strong oxidizers. Preserve the original, sealed packaging to prevent moisture pickup and contamination. Avoid prolonged storage at high temperatures, and maintain moderate humidity. Standard polymer handling and good housekeeping practices should be followed. |
| Shelf Life | Shelf life is typically 5 years from date of shipment when stored in original, unopened packaging in a cool, dry place. |
In thin-wall rigid packaging lines running a 16-cavity hot-runner mould, SABIC PP 500P is processed at a melt temperature of 230–250 °C and a mould temperature of 15–35 °C to take advantage of the grade’s nominal melt flow rate of 12 g/10 min at 230 °C/2.16 kg per ISO 1133-1:2022. The high-flow homopolymer permits wall stock of 0.5–1.2 mm without exceeding injection pressure ceilings of 1,400 bar on electric toggle machines; screw speed is kept below 250 rpm to limit shear heating in the metering zone. For food-contact dairy cups and deli containers weighing 8–24 g, cycle time is governed by gate freeze, not by cavity filling: hold pressure is maintained for 1.2–1.8 s before gate seal, then cooling time is set to reduce part surface temperature below 60 °C at demoulding. Compliance with FDA 21 CFR 177.1520(c) and EU No 10/2011 requires a written declaration showing total migration below 10 mg/dm² when tested under OM2 or OM5 simulants depending on end-use food type. In-mould labelling is preferred over post-mould decoration because label adhesion near the gate remains stable when cavity surface roughness is controlled to VDI 3400 Ref 24–30. The pellet is processed neat, and regrind is limited to 20–30 % by weight to avoid viscosity reduction from repeated thermal history. A known production-scale failure mode is gate blush on the outside face when the valve-gate needle opens before full injection pressure is established; the corrective action is to delay gate opening by 0.1–0.2 s after screw position reaches final switchover. This segment is not dominated by mechanical property conflict but by filling pressure, gate seal, and cooling uniformity across the stack.
Polypropylene closure systems demand a balance between high melt fluidity for 96-cavity or 128-cavity filling and sufficient post-crystallisation resistance to crack propagation in the hinge zone. The 500P grade, with a nominal flexural modulus of 1,450 MPa by ISO 178:2019 and tensile strain at yield of 9 % by ISO 527-2:2012, is applied to flip-top dispensing caps for liquid soap, condiment syrups, and household chemical containers where tamper-evident band retention is a dimensional tolerance issue. The melt is processed at 220–240 °C with a mould temperature of 15–25 °C; injection velocity is held at 80–120 mm/s and holding pressure at 40–50 MPa to keep cavity pressure at the gate below 600 bar. Exceeding that threshold on the tether junction creates residual stress whitening and shortens hinge cycle life. Hinge flexing must be performed immediately after ejection while the hinge zone is still above the amorphous glass transition and before full spherulite growth develops; delayed flexing beyond 30 s after demoulding raises crack initiation at the hinge midpoint. Closure torque retention measured per ASTM D2063 after 24 h conditioning at 23±2 °C is specified by the brand filler rather than the resin supplier, but values below 0.5 N·m on a 28 mm flip-top are generally rejected in production audits. External lubricants above 0.1 % are not used because they migrate to the surface and reduce post-mould friction welding of the tamper band. When regrind is added above 25 %, the melt flow rate increases beyond the upper control limit of 14 g/10 min, producing inconsistent gate vestige dimensions across the hot-runner system. No pre-drying is required if the silo atmosphere is below 60 % relative humidity; above that threshold, surface moisture can produce splay in the hinge area.
| Application segment | Primary test standard | Measured property | Critical production limit |
|---|---|---|---|
| Thin-wall food packaging | ISO 1133-1:2022 | Melt flow rate | 12–14 g/10 min at 230 °C/2.16 kg |
| Thin-wall food packaging | EU No 10/2011 | Overall migration | < 10 mg/dm² |
| Caps and closures | ISO 178:2019 | Flexural modulus | 1,400–1,500 MPa |
| Caps and closures | ASTM D2063 | Torque retention | > 0.5 N·m after 24 h |
| Housewares | ISO 8124-3 | Specific element migration | Element-specific limit |
| Appliances | UL 94 HB | Flame spread rating | HB at 3.0 mm |
| Medical hollowware | ISO 10993-5:2009 | Cytotoxicity | Non-cytotoxic on final article |
| Battery containers | ISO 175 | Acid immersion resistance | Weight gain < 0.1 % at 60 °C/72 h |
For rigid houseware components such as storage boxes, cutlery trays, and drawer organisers, SABIC PP 500P is selected when post-mould dimensional stability and surface gloss outweigh the need for low-temperature toughness. The melt is processed at 200–230 °C with a back pressure of 0.4–0.8 MPa to keep screw recovery consistent in open-nozzle systems; mould temperatures are held between 20–35 °C to reduce cycle time while increasing skin orientation and resistance to surface marring. Rib-to-wall thickness ratios are maintained below 60 % to avoid sink-mark depth exceeding 0.01 mm on the visible surface. Gate location is positioned away from bottom stacking features because post-fill differential shrinkage at the gate boss creates stack interference after 24 h of dimensional stabilisation at 23±2 °C. A significant production bottleneck is ejection demoulding force when wall draft is less than 1°; the coefficient of linear thermal expansion of the homopolymer at 1.0–1.5 × 10⁻⁴ K⁻¹ produces measurable core drag and pin cushioning. Compliance with ISO 8124-3 applies when the product is intended for children’s storage furniture; antimony, arsenic, barium, cadmium, chromium, lead, mercury, and selenium limits are assessed on the final decorated item. The unfilled grade is welded by hot-plate or ultrasonic methods at a shear-joint angle of 60° with a collapse distance of 0.3 mm for assembled modular units. Regrind inclusion up to 40 % is usually tolerated in thick-section housewares if the melt filtration screen is 60 mesh or finer, but the melt flow rate must be checked every 4 h to prevent sink-mark shifts in stack tools.
The scrap-rate increase at rib intersections in appliance and white-goods components occurs when local packing pressure drops below the internal stress generated by differential shrinkage. SABIC PP 500P is used for washing-machine detergent dispenser housings, refrigerator shelf frames, and dishwasher cutlery basket clips where stiffness, chemical resistance, and low part mass are required simultaneously. In stack-mould configurations with 2×8 or 2×12 cavities, the grade is processed at 220–240 °C and 25–45 °C mould temperature; the lower melt temperature improves melt stability when the hot-runner manifold length exceeds 400 mm. Weld lines at cut-outs and snap-fit tabs reduce tensile elongation to 20–40 % of the base value, so knock-out pin and tab radii below 0.5 mm are rejected at design review. The homopolymer has a nominal heat deflection temperature of 95 °C at 0.45 MPa per ISO 75-2:2013, but the load-bearing service temperature in alkaline detergent contact should not exceed 70 °C because combined surfactant alkalinity and thermal oxidation deplete the stabiliser package prematurely. Hot-plate welding of the dispenser housing halves is performed at 210–230 °C plate temperature and 0.15–0.30 MPa joint pressure; excessive melt displacement above 0.8 mm creates flash that interferes with the drawer slide. Compliance is evaluated per UL 94 HB for flame spread and IEC 60335-1 for indirect material contact in household appliances. On production lines, the principal defect is not short filling but micro-porosity at the junction of a 1.5 mm thick outer wall and a 2.5 mm thick boss; this is corrected by increasing packing pressure from 35 MPa to 50 MPa while reducing screw speed to 80 rpm to avoid polymer degradation.
| Processing parameter | Thin-wall packaging | Caps and closures | Housewares | Battery containers |
|---|---|---|---|---|
| Melt temperature | 230–250 °C | 220–240 °C | 200–230 °C | 230–250 °C |
| Mould temperature | 15–35 °C | 15–25 °C | 20–35 °C | 25–45 °C |
| Injection velocity | 100–180 mm/s | 80–120 mm/s | 60–100 mm/s | 40–80 mm/s |
| Holding pressure | 35–45 MPa | 40–50 MPa | 30–40 MPa | 45–60 MPa |
| Critical constraint | Gate freeze shorter than hold time | Hinge orientation retention | Sink mark at rib intersections | Weld-line acid wetting |
Across medical and diagnostic hollowware manufacturing lines, polypropylene homopolymer is used for centrifuge tube racks, specimen transport containers, and pipette tip racks where the part is non-implant and the sterilisation route is gamma radiation at 25–50 kGy or ethylene oxide gas. SABIC PP 500P is processed at 220–250 °C with a higher mould temperature of 30–50 °C to reduce internal stress around living hinges and snap-fit lids; the higher mould temperature increases cycle time by 5–10 % but lowers the coefficient of variation in lid closing force across a 32-cavity tool. Performance under ISO 10993-5:2009 and ISO 10993-10:2013 is determined by the final article’s additive package and processing history, not by the base resin alone, so written biocompatibility testing on the actual moulded component is mandatory. Autoclaving at 121 °C for 20 min is possible only for unstressed tray or rack geometries with adequate support; clamped or inserted attachments may warp beyond 0.5 mm flatness because moulded-in stress relaxes above the deflection temperature. Ethylene oxide sterilisation requires aeration time above 8 h at 50 °C to reduce residual ethylene oxide below the action limit in ISO 10993-7. The unfilled low-density character of PP 500P is unsuitable for repeated autoclave cycles above 134 °C because oxidative chain scission accelerates and visible yellowing appears after 3–5 cycles. In production, nozzle stringing is controlled by reducing the front-zone barrel temperature to 210 °C and using a positive shut-off nozzle; hot-tip gate marks below 0.05 mm height are required for specimen transfer surfaces.
Injection-moulded lid and container pairs for lead-acid cells fabricated from SABIC PP 500P require a wall thickness between 2.5 mm and 4.0 mm and a weld interface free of external release agents. The grade is processed at 230–250 °C with a mould temperature of 25–45 °C and a fill speed low enough to avoid jetting in the gate area; hot-runner sequential valve gating is common for battery containers because the length-to-thickness ratio of the end walls exceeds 120:1. The moulded parts are tested in sulphuric acid at a relative density of 1.28 for 72 h at 60 °C; weight gain below 0.1 % is required to demonstrate resistance to acid permeation. Welding of the lid to the container uses hot-plate or infrared methods at an interface temperature of 200–220 °C; joint displacement is controlled to 0.2–0.5 mm to prevent molten material from entering the cell cavity. The finished assembly is subjected to leak testing at 0.3 bar internal air pressure for 15 s, and the seal must show no bubble formation. The unfilled homopolymer has an insulation resistance above 10¹² Ω up to 60 °C, but surface resistivity falls under heavy condensation conditions, so terminal post bases are designed with creepage distances according to IEC 60093 and IEC 62620 for battery safety. The material must not be contaminated with external lubricants containing metal stearates beyond 0.05 % because the stearate layer interferes with weld strength and can migrate into the acid, increasing antimony-free battery self-discharge. Published data for this specific grade in continuous acid stratification testing is limited; long-term validation under ISO 175 immersion is required before volume production.
Competitive SABIC PP 500P prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Within the SABIC polypropylene portfolio, the grade designated PP 500P is a pelletized homopolymer produced by continuous polymerization of propylene. The model number 500P identifies a medium-flow injection-molding resin: melt flow rate 11 g/10 min measured at 230°C and 2.16 kg load according to ISO 1133-1. The product is intended for conventional reciprocating-screw injection molding machines fitted with polyolefin screws having an L/D ratio between 20:1 and 24:1 and a compression ratio between 2.5:1 and 3.5:1. The polymer backbone is based on propylene monomer without intentional ethylene comonomer, placing the material in the homopolymer class rather than impact copolymer or random copolymer classes.
Density, stiffness, and thermal resistance are summarized below using published supplier typical values. These values are not specification limits.
| Property | Typical value | Test method |
|---|---|---|
| Melt flow rate, 230°C/2.16 kg | 11 g/10 min | ISO 1133-1 |
| Density | 0.905 g/cm³ | ISO 1183-1 |
| Tensile stress at yield | 34 MPa | ISO 527-2 |
| Tensile strain at yield | 10% | ISO 527-2 |
| Flexural modulus | 1500 MPa | ISO 178 |
| Notched Izod impact strength, 23°C | 3.0 kJ/m² | ISO 180/A |
| Vicat softening temperature, A50 | 154°C | ISO 306 |
| Heat deflection temperature, 0.45 MPa | 95°C | ISO 75-2/B |
Because the values originate from published typical characterization, converters should not use them as release criteria. The product technical data sheet for the production site and the lot-specific certificate of analysis should be consulted for lot release decisions. Lot-to-lot melt flow rate variation can shift filling pressure and pack window in thin-wall tools. A change of 1 g/10 min may require re-establishing the injection process window. Incoming resin should therefore be monitored according to ISO 1133-1 before release to production.
Melt-temperature settings between 220°C and 260°C are commonly applied for unfilled homopolymer polypropylene in the 11 g/10 min MFR class. A flat or reverse barrel profile with the nozzle maintained at 230–250°C limits local melt overheating and reduces the probability of yellowing. Mold temperature is typically held at 20–50°C. Lower mold temperatures reduce cycle time but increase frozen-in orientation and warpage risk in flat parts; higher mold temperatures increase crystallinity and shrinkage while improving surface gloss transfer from polished tool surfaces.
The melt flow rate imposes specific constraints in thin-wall cavities. For walls of 0.8–1.2 mm, filling times of 0.2–0.8 s are commonly required to prevent premature gate freeze. Multi-cavity closure tools with flow length-to-wall-thickness ratios above 150:1 can require peak injection pressures of 80–120 MPa at the machine nozzle. Packing pressure normally lies between 40% and 70% of the peak injection pressure and is held for 6–12 s depending on gate diameter and part weight. These processing values are derived from general homopolymer injection molding literature and are not a substitute for tool-specific mold-flow simulation and short-shot studies; published data for PP 500P in a specific production tool configuration is limited.
Screw recovery conditions also affect melt quality. Back pressure of 5–15 bar and screw surface speed below 1.0 m/s avoid excessive shear heating during plastication. In hot-runner systems, manifold and drop temperatures should be held at 230–250°C. Nozzle tips with gate diameters of 0.5–1.0 mm are typical for closures and thin-wall packaging. Higher shear temperatures can reduce molecular weight and increase yellowness index; therefore, melt residence time above 260°C should be limited to less than 15 min, and stagnation zones in the hot runner should be avoided.
Cooling time in thick sections is governed by part thickness and thermal diffusivity. For unfilled homopolymer PP with a density of 0.905 g/cm³, typical thermal diffusivity is approximately 0.1 mm²/s. Ejection at an average part temperature of 80°C is common, but the cooling phase must be confirmed with melt temperature and mold temperature measurements because premature ejection can produce sink marks and post-mold warpage. Nominal wall thickness changes above 10% of the adjacent wall can generate sink marks and warpage. If local thickness cannot be reduced, gas-assisted molding or chemical foaming may be required, but such changes can alter stiffness and food-contact compliance.
Historically, PP 500P has been processed into rigid houseware, caps and closures, crates, appliance panels, and reusable containers. In these applications the material is usually pigmented with polypropylene-based masterbatch at let-down ratios of 2–4% by weight. Color consistency should be verified by spectrophotometer against a defined CIELAB target. For food-contact articles, converters may assess compliance under FDA 21 CFR 177.1520 and Commission Regulation (EU) No 10/2011; overall migration must not exceed 10 mg/dm² when tested under the prescribed food simulants. The grade is not designed for optical clarity; without clarifying additives, light transmission and haze are governed by the crystalline morphology of the homopolymer.
Regrind use is possible in non-food packaging when the regrind is dry, unpolluted, and added at up to 20% by weight, provided that rheological and color properties remain within control limits. Food-contact converters should verify the regulatory status of regrind separately. During molding, post-mold dimensional change continues after ejection; dimensional checks should be performed after 24 h conditioning at 23°C and 50% RH, because unfilled homopolymer PP of this density can show linear mold shrinkage in the range of 1.0–2.0% depending on wall thickness, gate orientation, and mold temperature. Grade-specific shrinkage should be measured using ISO 294-4 specimen protocols on the intended tool geometry.
Unlike impact copolymer grades containing a dispersed ethylene-propylene rubber phase, PP 500P contains no intentional ethylene comonomer. This structural difference yields a flexural modulus of approximately 1500 MPa under ISO 178, while the notched Izod impact strength at 23°C remains around 3.0 kJ/m² under ISO 180/A. Sub-ambient crack propagation resistance is lower than that of heterophasic copolymers because the elastomeric phase is absent; therefore the homopolymer should not be selected for sub-zero impact duties without instrumented impact characterization.
Relative to high-flow homopolymers with melt flow rates above 20 g/10 min, PP 500P displays a moderate MFR of 11 g/10 min. The lower MFR increases pressure drop during cavity filling and can reduce flow length in very thin sections. In return, lower MFR grades generally exhibit higher melt strength, reduced flash at the parting line, and better retention of tensile yield stress. Weld line strength in multi-gated components is often better than that of high-flow homopolymers, but published comparative weld line data for PP 500P is limited; tool-specific testing is required.
Against random copolymer PP grades, PP 500P provides higher flexural modulus and higher heat deflection temperature under 0.45 MPa load. Random copolymers, particularly clarified grades, exceed the homopolymer in transparency and cold-temperature impact. PP 500P is therefore intended for opaque rigid injection molded articles in which stiffness and thermal resistance outweigh clarity and sub-ambient toughness. Within SABIC nomenclature, the 500-series indicates injection-molding homopolymers; other series and suffix modifications cover high-flow, impact copolymer, random copolymer, and application-specific resins. Grade substitution should be made only after comparing supplier technical data sheets, because molecular weight distribution and additive package differ across reactor technologies and production sites.
Under capillary rheometry at 230°C, unfilled homopolymer PP with an 11 g/10 min MFR typically shows pseudoplastic shear-thinning with a power-law index in the range of 0.35–0.45 over shear rates from 100 s⁻¹ to 10,000 s⁻¹. Apparent viscosity at 1000 s⁻¹ is reported in open literature as approximately 80 Pa·s for similar grades; grade-specific capillary data from the supplier remain necessary because molecular weight distribution and nucleating additives alter the flow curve. Differential scanning calorimetry of unfilled homopolymer PP around this composition typically shows a peak melting endotherm near 163°C and a crystallization exotherm near 112°C under ISO 11357-3 at 10°C/min. These thermal transitions support mold temperature selection and cooling time estimation, but they are not lot-release specifications.
During long production campaigns, process drift may result from check ring wear, hot runner thermocouple drift, or screw barrel wear. These mechanical conditions can alter melt temperature and shear history without changing the resin. Production-scale diagnostics include short-shot progression, part weight stability, and mold open time. If part weight falls by more than 0.5% between shots, check ring wear and feed throat bridging should be evaluated.
Because the homopolymer backbone is non-polar, printing and bonding require surface activation. Corona discharge or flame treatment should raise surface energy above 38 mN/m for reliable ink wetting; surface energy can be checked by dyne pens or contact angle measurement according to ISO 8296. Adhesion systems for polypropylene require suitable primers or plasma treatment, because structural adhesives generally develop low peel strength on untreated semi-crystalline olefin surfaces.
Chemical resistance of the base polymer is limited toward strong oxidizing acids, chlorinated solvents, and some aromatic hydrocarbons at elevated temperatures. Continuous exposure to concentrated nitric acid or chlorine-based oxidizers should be avoided unless immersion testing under ASTM D543-21 demonstrates dimensional and mechanical stability for the specific fluid and temperature. Swelling in aliphatic solvents can alter dimensions and lower flexural modulus; final articles should be validated under the intended chemical environment.
| Boundary or requirement | Limit or condition | Reference |
|---|---|---|
| Melt temperature in injection molding | 220–260°C | General PP processing practice |
| Drying if surface splay occurs | 80°C for 2–4 h | Desiccant hopper, dew point ≤ -30°C |
| Food-contact overall migration | ≤ 10 mg/dm² | EU Regulation (EU) No 10/2011 |
| Printing surface energy | > 38 mN/m | ISO 8296 |
| Long-term hydrostatic strength | Not assigned | ISO 9080 |
| Medical implant application | Not intended | ISO 10993, USP Class VI |
Although polypropylene is not hygroscopic, surface condensation on pellet bulk can generate splay in molded parts. If moisture-related defects appear, dry pellets at 80°C for 2–4 h in a desiccant hopper with a dew point of -30°C or lower. Storage should avoid relative humidity above 60% and direct sunlight. Unstabilized or insufficiently stabilized polypropylene undergoes ultraviolet degradation; PP 500P is not supplied as a UV-stabilized weathering grade unless the specific lot documentation states an added UV stabilizer system. Exterior applications must be validated under ISO 4892-2 or ASTM G155 after addition of carbon black or hindered amine light stabilizer masterbatch. Published accelerated weathering data for PP 500P in a specific formulation is limited.
The grade is not intended for pressure pipes or gas piping because no ISO 9080 long-term hydrostatic strength classification is assigned. It is not intended for medical implant or pharmaceutical container applications; no ISO 10993 or USP Class VI claim should be inferred from the designation alone.
