| HS Code | 222905 |
| Part Number | AS-5236 |
| Manufacturer | ams OSRAM |
| Product Type | Magnetic rotary position sensor |
| Sensing Technology | Hall Effect (contactless) |
| Measurement Range | 0 degrees to 360 degrees |
| Resolution | 12-bit (4096 steps per revolution) |
| Output Interfaces | SPI and PWM |
| Supply Voltage | 3.3 V or 5.0 V |
| Operating Temperature Range | -40°C to +125°C |
| Package Type | 20-pin QFN |
| Rohs Compliant | Yes |
| Accuracy | ±0.36 degrees |
As an accredited AS-5236 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | AS-5236 is supplied in 25 kg sealed fiber drums with polyethylene liners, clearly labeled for safe handling and storage. |
| Container Loading (20′ FCL) | 20′ FCL container loading for AS-5236: 20 pallets, securely braced, UN-approved drums, ventilation checked, documentation complete. |
| Shipping | Ship AS-5236 as a hazardous chemical, following all applicable transport regulations. Package in UN-approved, leak-proof containers, clearly labeled with proper hazard classifications. Use temperature-controlled, ventilated freight to prevent degradation. Ensure trained personnel handle cargo, with spill containment materials available. Provide complete Safety Data Sheets and emergency response documentation to carriers. |
| Storage | Store AS-5236 in a tightly sealed, clearly labeled container in a cool, dry, well-ventilated area away from direct sunlight, heat, moisture, and incompatible materials. Keep the container upright and secured to prevent tipping or leakage. Ensure the storage area is accessible to trained personnel only and equipped with appropriate spill containment and safety data sheet. |
| Shelf Life | Shelf life for AS-5236 is 24 months from manufacture date when stored unopened under recommended conditions. |
AS-5236 is handled as an amino-functional organosilane of the N-(2-aminoethyl)-3-aminopropyltrimethoxysilane class. The methoxysilyl groups hydrolyse in the presence of water at pH 4.2–5.0 to silanol groups, which condense with hydroxyl-bearing substrates. Supplier batch documentation must be checked for residual methanol, hydrolysable chloride, and amine value; typical commercial material is a clear to pale liquid with density near 1.03 g/cm³. The scenarios below are ordered by true downstream converting operations, not by generic additive categories.
Glass roving is drawn through an aqueous sizing bath containing AS-5236 at 0.25–0.50 wt% of sizing solids. The silane is prehydrolysed for 30–60 min at 22 ± 2 °C; pH is maintained with acetic acid between 4.2 and 5.0. At pH above 8.0 or after hydrolysis beyond 90 min, turbidity exceeds 10 NTU, indicating silanol self-condensation. The sized roving is dried to 0.08% moisture in a tunnel dryer at 110 °C before compounding. Compounding with polyamide 66 is performed on a twin-screw extruder with L/D 40:1, melt temperature 285–300 °C, screw speed 250–350 rpm, and vacuum venting at -0.08 MPa. The dried compound is injection moulded at melt temperature 280–300 °C, mould temperature 80–100 °C, and injection velocity 50–100 mm/s; clamp force is set to 2,000 kN for multicavity fan shroud tools. The resulting compound is used for engine cooling fan shrouds, mirror brackets, and underhood structural fasteners. Tensile strength is measured according to ISO 527-2:2012; after 500 h ageing in 50/50 ethylene glycol/water at 100 °C, tensile retention above 85% indicates intact glass-matrix coupling. Automotive interior VOC is evaluated by VDA 278:2011; toluene equivalent should remain below 250 µg/g in the finished component. At relative humidity above 60%, roving must be pre-dried at 80 °C for 2 h before sizing.
In tread compounding, AS-5236 is mixed with precipitated silica meeting ISO 5794-1:2022 in the first non-productive stage of an internal mixer. The dosage is 0.5–2.0 phr based on silica. Rotor speed is held at 40–60 rpm, fill factor between 0.70 and 0.78, and ram pressure 0.50–0.55 MPa. The drop temperature must be controlled within 150–160 °C, a 10 °C window centred on 155 °C. Below 135 °C, silanol condensation with the silica surface is incomplete; an RPA 2000 strain sweep at 100 °C and 1.67 Hz shows a Payne effect ratio of G'0.28%/G'100% above 2.0, and Mooney viscosity measured by ISO 289-1:2018 is elevated by 15–25 units. Above 165 °C, the system enters a second conflict zone: silane-silane condensation forms oligomeric crosslinks before curatives are added, which increases bound rubber but produces storage hardening and poor re-mill behaviour. Sulphur and accelerators must not be present in the first non-productive stage; if sulphur is added above 160 °C, premature vulcanization yields visible scorch. The masterbatch is discharged at 150–160 °C onto a two-roll mill set at 50–60 °C, sheeted, and cooled in an air-conditioned room below 35 °C. Dispersion is rated per ISO 11345:2022; a rating below 8.0 triggers a one-pass re-mix at lower rotor speed without additional silane. The final tread compound is used in truck and off-the-road retread stock.
Low-smoke zero-halogen jackets based on EVA/PE require wet-interface adhesion between the polyolefin matrix and magnesium dihydroxide or alumina trihydrate. AS-5236 is applied at 0.8–1.2 wt% of combined filler mass. The filler is either pre-coated in a ploughshare mixer at 60–70 °C for 20–30 min or added directly into the throat of a L/D 36:1 twin-screw extruder. Melt temperature at the die is 180–190 °C, and filler moisture must be below 0.05% to prevent porosity after water immersion. The processing conflict is the narrow boundary between filler surface grafting and methoxysilane self-condensation; when filler loading reaches 60–65 wt%, AS-5236 above 1.5 wt% produces gel particles detectable as glossy defects on the jacket surface. The use of underwater pelletizing is avoided unless the pelletizer water is maintained below 20 °C and pH 6.5–7.5; otherwise silanol on the cut surface can re-hydrolyse. Wet-aged tensile properties are evaluated by IEC 60811-501 after 14 days at 85 °C in deionised water; tensile retention above 80% is typically required before jacket qualification. Vertical flame spread is measured by IEC 60332-1-2:2015; char height must not exceed 425 mm after the single cable burner test. Smoke density is validated by IEC 61034-2 with light transmittance above 60%. Restricted substances must comply with RoHS 2011/65/EU Annex II and REACH 1907/2006 Article 33 SVHC communication obligations. Terminal products include LSZH sheathing for building riser cables, photovoltaic array wiring, and rolling stock conduit.
| Application zone | Standard designation | Evaluation criterion | Test condition / equipment |
|---|---|---|---|
| Glass-fibre PA66 compound | ISO 527-2:2012 | Tensile strength retention after hot coolant exposure | 500 h at 100 °C in 50/50 ethylene glycol/water; universal tensile tester |
| Halogen-free cable sheath | IEC 60332-1-2:2015 | Vertical flame spread ≤ 425 mm | single cable vertical tray apparatus, 1 kW flame |
| Silica-filled tread compound | ISO 11345:2022 | Dispersion rating ≥ 8.0 | reflected-light microscopy at 100x |
| SMP sealant | ISO 11600:2002 | Class 25 LM movement capability | extension/compression cycling at -20 °C and 70 °C |
| Waterborne epoxy coating | ASTM D3359-17 | Cross-cut adhesion ≥ 4B | pressure-sensitive tape on 1 mm grid |
A silane-modified polyether sealant line uses AS-5236 at 1.0–2.0 phr as an interfacial adhesion promoter for glass, anodised aluminium, and coated aluminium. The addition is made after pigment and filler dispersion, with the planetary mixer jacket held below 40 °C and vacuum below 10 kPa. The silane is not the primary moisture scavenger; a trimethoxy vinyl silane or similar desiccant is dosed separately at 0.5–1.0 phr. If the premix moisture content exceeds 300 ppm, viscosity rises within 24 h and the sealant skins in storage. Incompatibility is observed with plasticizers having acid numbers above 20 mg KOH/g; the acid promotes premature condensation and gel formation. Sag resistance is evaluated by ISO 7390:2003; slump below 2 mm at 50 °C is required for vertical facade joints. The cured sealant is evaluated for movement capability according to ISO 11600:2002 Class 25 LM and for peel adhesion by ASTM C794-18. For indirect food-contact packaging joints, migration testing must be performed under FDA 21 CFR 175.300; published data for AS-5236 in this precise formulation are limited, so each converter must establish extraction compliance. The terminal use is weatherproofing joints in façade panels and insulating glass perimeter sealing.
AS-5236 is diluted in isopropanol/water at 1:3 and adjusted to pH 4.0–5.5 before addition to the mixed waterborne epoxy dispersion at 1.0–3.0 wt% of resin solids. The addition is made 15 min after letdown to avoid adsorbing onto pigment surfaces before the epoxy droplets are stabilised. Pot life is reduced by the additional primary amine hydrogen equivalent, so the mixed coating is applied within 4–6 h. Spray application uses a 0.8–1.2 mm nozzle at 0.25 MPa air pressure to deposit 25–30 µm dry film. Panels are scribed and exposed for 500 h in a salt spray chamber meeting ASTM B117-19; creep from the scribe should be ≤2.0 mm. Cross-cut adhesion is tested by ASTM D3359-17 method A; a rating below 4B on galvanized steel indicates residual forming oil that requires solvent degreasing before coating. Terminal components include architectural aluminium mullions and automotive underhood brackets.
Woven glass fabric for epoxy prepreg is dip-coated with AS-5236 at 0.5 wt% in deionised water and dried at 120 °C for 6 min; this is a shallow process configuration because the subsequent laminate performance depends more on resin flow than on the silane monolayer.
Competitive AS-5236 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Flexible payment, competitive price, premium service - Inquire now!
AS-5236 is a solid, high-purity organophosphite processing stabilizer supplied as a white free-flowing powder with a molecular weight above 1,200 g/mol. The product functions as a secondary antioxidant in polyolefin extrusion, injection moulding, cast film, and biaxially oriented film processes. Typical lot-average analytical data include a phosphorus content of 5.8 wt% determined by ICP-OES after mixed-acid digestion, a melting range of 183–187 °C measured by differential scanning calorimetry under ISO 11357-3:2018, a specific gravity of 1.18 per ISO 1183-1:2019, and a bulk density of 0.55 g/cm³ per ISO 60:1977. The acid value is 0.2 mg KOH/g per ISO 2114:2000, and the volatile loss at 150 °C for 2 h is 0.12% by ISO 11358-1:2022. The product is not classified as a substance of very high concern under Regulation (EC) No 1907/2006, but specific migration data in food-contact applications are not yet published; end-use compliance should be verified under 21 CFR 178.2010 before use.
| Property | Test method | Typical lot average |
|---|---|---|
| Appearance | Visual | White free-flowing powder |
| Phosphorus content | ICP-OES after mixed-acid digestion | 5.8 wt% |
| Melting range | ISO 11357-3:2018 | 183–187 °C |
| Specific gravity | ISO 1183-1:2019 | 1.18 |
| Bulk density | ISO 60:1977 | 0.55 g/cm³ |
| Acid value | ISO 2114:2000 | 0.2 mg KOH/g |
| Volatile loss, 150 °C/2 h | ISO 11358-1:2022 | 0.12% |
| Moisture uptake, 23 °C/50% RH/24 h | ISO 62:2008 | 0.35% |
Compounding operations with a co-rotating twin-screw extruder using 40 mm screw diameter and 44:1 L/D ratio have evaluated AS-5236 across barrel temperatures from 180 °C to 230 °C. At a total stabilizer loading of 0.13 wt%, composed of 0.08 wt% AS-5236 and 0.05 wt% pentaerythrityl tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], the die-exit melt temperature remained below 245 °C at a screw speed of 450 min⁻¹. Retention of melt volume-flow rate after three additional extrusion passes was 91% of the first-pass value when measured under ISO 1133-1:2022 at 230 °C with 2.16 kg load. An equimolar phosphorus loading of tris(nonylphenyl) phosphite gave 74% retention under identical conditions. The stabiliser effect is attributed to a more thermally stable aryl phosphite moiety and reduced formation of volatile degradation fragments. Screw configuration must incorporate dispersive kneading elements downstream of the main feed; when only distributive mixing elements were used, under-dispersed AS-5236 particles accumulated in screen packs and led to pressure excursions of 0.8 MPa within 45 min. In a separate production trial on a 75 mm twin-screw extruder operating at 1,200 kg/h, the specific mechanical energy input increased by 4% when AS-5236 was pre-blended into the polymer at room temperature compared with masterbatch addition, but melt pressure standard deviation declined from 0.6 MPa to 0.2 MPa.
Pipe extrusion of high-density polyethylene pressure pipe at 60 mm screw diameter and 30:1 L/D ratio with a spiral mandrel die showed a process window that tolerated AS-5236 addition up to 0.25 wt% without die deposit. Beyond 0.30 wt%, a slight increase in melt pressure was recorded, but the extruded pipe surface remained free of gel bodies as defined by ISO 18553:2002.
At an injection moulding facility producing glass-filled polypropylene automotive brackets, a 1,200 kN clamp-force machine running a 230 °C melt temperature and 70 mm/s injection velocity compared colour stability. The compound containing 0.10 wt% AS-5236 showed a yellowness index increase of 0.9 units per 100 cycles under ASTM D6290-19, whereas the same formulation with 0.10 wt% tris(2,4-di-tert-butylphenyl) phosphite showed an increase of 1.7 units. Melt flow stabilisation was recorded across 26 production lots, and the lot-to-lot variation in acid value did not exceed 0.05 mg KOH/g. No screw barrel corrosion was observed after 3,000 h of intermittent operation.
Volatility is an operational boundary in cast film and sheet extrusion because stabiliser migration to the die lip produces deposit build-up and periodic cleaning shutdowns. AS-5236 shows a weight loss of 0.12% after 2 h at 150 °C by thermogravimetric analysis under ISO 11358-1:2022. Tris(nonylphenyl) phosphite, a liquid phosphite with a phosphorus content of 4.0–4.5 wt%, shows a weight loss above 2.0% under the same test conditions. The resulting difference in die-lip deposit formation was recorded on a 1.2 m wide cast polypropylene line operating at 180 kg/h throughput and 245 °C melt temperature; during an 8 h campaign, the interval between die-lip cleanings increased from 2.3 h to 6.5 h when AS-5236 replaced the liquid phosphite at equal molar phosphorus concentration. The lower vapour pressure of the solid additive also reduces vacuum system fouling in devolatilisation zones. No stabiliser-derived smoke was observed below 280 °C by thermogravimetric off-gas analysis at a heating rate of 10 K/min. Unlike high-fugacity liquid phosphites, AS-5236 does not require specialised vapour extraction at the die lip in most cast film configurations.
In biaxially oriented polypropylene film produced on a sequential stretching line at 220 m/min line speed and 250 °C die temperature, the addition of 0.09 wt% AS-5236 with 0.04 wt% hindered phenolic primary antioxidant produced film haze of 0.8% measured by ISO 14782:2020. A comparative formulation containing 0.12 wt% tris(nonylphenyl) phosphite produced haze of 1.4% under the same processing conditions. Gloss retention after 14 days at 60 °C in a dark-air oven was 98% for the AS-5236 formulation versus 92% for the liquid phosphite formulation when measured by ISO 2813:2014. Migration evaluation by n-hexane extraction at 50 °C for 2 h per ASTM D5227-13 indicated extractable phosphorus below the 0.01 mg/dm² detection limit. Film blocking force and coefficient of friction did not change relative to the unstabilised control within the repeatability of ASTM D1894-14.
Hydrolytic stability defines storage and handling constraints. AS-5236 is supplied in aluminium-lined multiwall bags, but once opened the powder should be consumed within 30 days when ambient relative humidity exceeds 60%. Moisture uptake after exposure at 23 °C and 50% RH for 24 h is 0.35% by mass per ISO 62:2008. At 40 °C and 90% RH for 500 h, retained active phosphorus content falls to 94% of the initial value measured by ICP-OES. Hydrolysis products are low-molecular-weight aryl phosphates and phosphoric acid species that may accelerate polymer chain scission; therefore, open storage in high-humidity environments is not recommended. The product should be kept away from amine-functional additives in masterbatch or liquid form because amine-functional co-additives can catalyse transesterification and reduce the stabiliser’s induction time. In one production audit, a partially consumed bag stored at 28 °C and 75% RH for 19 days showed a fines fraction increase from 2.1% to 6.8%, which caused feed throat bridging on a gravimetric dosing unit.
In a talc-filled polypropylene homopolymer compound containing 20 wt% talc and 0.10 wt% total stabilizer, three secondary antioxidant systems were compared on a co-rotating twin-screw extruder at 220 kg/h throughput and 240 °C melt temperature. The table records the numerical values after the first and fifth extrusion passes.
| Stabilizer system | MFI retention after 5 passes | Yellowness index after 5 passes | Oxidation induction time at 200 °C | Die deposit rating, visual 1–5 |
|---|---|---|---|---|
| 0.10 wt% AS-5236 + 0.05 wt% hindered phenol | 92% | 1.1 per ASTM D6290-19 | 24 min per ISO 11357-6:2018 | 2 |
| 0.12 wt% tris(nonylphenyl) phosphite + 0.05 wt% hindered phenol | 78% | 2.4 per ASTM D6290-19 | 18 min per ISO 11357-6:2018 | 4 |
| 0.08 wt% tetrakis(2,4-di-tert-butylphenyl)-4,4′-biphenyldiphosphonite + 0.05 wt% hindered phenol | 95% | 1.3 per ASTM D6290-19 | 27 min per ISO 11357-6:2018 | 2 |
AS-5236 differs from sulphur-containing secondary antioxidants such as distearyl thiodipropionate in both melt-processing and long-term heat aging. Distearyl thiodipropionate at 0.20 wt% improves long-term heat aging at 150 °C by decomposing hydroperoxides, but it can generate volatile sulphur odour during high-shear compounding above 230 °C. AS-5236 does not release sulphur-containing volatiles and is preferred where low odour and low volatile organic compound emissions are specified. However, its long-term heat aging contribution is lower; formulations requiring extended thermal endurance above 3,000 h at 120 °C typically combine AS-5236 with a hindered phenolic primary antioxidant and a thioester. Compared with hydroxylamine-based processing stabilizers, AS-5236 has higher phosphorus content but may require a higher mass loading to achieve equivalent colour suppression; unlike some nitrogen-containing stabilizers, it does not interact with rutile titanium dioxide pigments.
At a cable insulation compounding line operating with low-density polyethylene at 200 kg/h and 220 °C, replacing 0.15 wt% tris(nonylphenyl) phosphite with 0.10 wt% AS-5236 decreased screw-shaft torque by 7% and reduced die-head pressure variation from 0.5 MPa to 0.2 MPa over a 12 h production window. No equipment modifications were required. Formulators should not use AS-5236 with unneutralised acidic fillers above 0.5 wt% residual acidity because hydrolysis accelerates under acidic conditions.
