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Featured Product Good Quality HPS Hydroxypropyl Starch Ether "The optimal modification for construction material fluidity control" - Material Science Journal CAS 9049 76 7 Hydroxypropyl starch ether (HPS) is a fine white powder derived from natural plant materials through highly etherified reaction, followed by spray drying without plasticizer. Fundamentally different from ordinary starch modifications. Fast thickening ability Medium viscosity profile Superior sag resistance Enhanced workability Controlled water retention 9049 76 7 Technical Specifications Parameter Value Test Method Certification Appearance White to off-white powder ASTM E1347 ISO 9001 Molecular Weight 10,000-100,000 g/mol GPC Analysis EN 13258 Molar Substitution (MS) 0.04-0.15 NMR Spectroscopy REACH Compliant Viscosity (2% solution) 100-500 mPa·s Brookfield Viscometer CE Certified Moisture Content ≤ 8% Karl Fischer Titration USP Standard Ash Content ≤ 0.5% Incineratio GB/T 5009.4 pH Value (1% solution) 5.0-8.0 pH Meter ISO 3071 Particle Size (200 mesh) ≥ 95% Sieving Method ASTM B214 9049 76 7 Performance Characteristics CAS 9049 76 7 Product Gallery Industrial-grade hydroxypropyl starch Quality packaging standards Lab testing procedures Technical FAQ: 9049 76 7 Q: What distinguishes hydroxypropyl starch from ordinary starch? A: Hydroxypropyl starch ether undergoes etherification modification, significantly altering its molecular structure. This creates unique properties including thermal stability, pH tolerance, and water retention capabilities unachievable with native starch. Q: What concentration ranges are optimal in construction applications? A: In mortar formulations, optimal performance of 9049 76 7 occurs at 0.1%-0.4% by weight. Higher concentrations increase water retention but may impact setting time. Specific formulations require manufacturer guidance. Q: How does hydroxypropyl substitution affect performance? A: Molar substitution (MS) directly impacts solubility and viscosity. Higher MS grades (0.10-0.15) provide better cold water solubility for paints, while lower MS grades (0.04-0.08) suit construction applications requiring controlled hydration rates. Q: What are the key safety considerations? A: As a modified carbohydrate, CAS 9049 76 7 demonstrates low toxicity (LD50 >5000mg/kg). Safety protocols should address dust inhalation risks with standard PPE during handling. The compound is biodegradable per OECD 301 standards. Q: How does particle size impact performance? A: Finer particles (<100 mesh) dissolve more rapidly but may create dust challenges. Coarser particles (>80 mesh) show slower dissolution ideal for delayed hydration applications. Pengze Technology offers multiple gradations meeting industry standards. Q: What storage conditions are recommended? A: Store in moisture-proof container111s at <25°C and <65% humidity. Avoid direct sunlight. Shelf life is typically 24 months when packaged properly. Condensation leads to reduced flowability and clumping. Q: How does HPS improve gypsum joint performance? A: As a key component in our Hydroxypropyl Starch for gypsum, it regulates water release, preventing premature drying while enhancing adhesion. Its pseudoplastic behavior allows easy application yet prevents sagging in vertical joints. Applications of Hydroxypropyl Starch Ether Construction Materials Tile Adhesives & Grouts 9049 76 7 significantly extends open time while improving anti-sag properties. Industry testing demonstrates 50% improvement in vertical tile slip resistance versus traditional cellulose ethers (Construction Materials Journal, 2022). Key benefits include: Enhanced workability time (+40-60 minutes) Reduced water absorption rate Improved adhesion strength development Self-leveling Compounds When used at 0.15-0.35% concentration, hydroxypropyl starch ether controls viscosity development to allow proper flow while preventing particle sedimentation. Building material researchers note its superiority in minimizing crater formation during setting. Pharmaceutical Applications As pharmaceutical-grade sodium hydroxypropyl starch phosphate , this compound serves as: Tablet disintegrant with superior compression characteristics Controlled-release matrix former Topical formulation stabilizer Recent studies indicate its potential as a cost-effective alternative to synthetic superdisintegrants while maintaining compliance with USP/EP standards (Pharmaceutical Technology Review, 2023). Technical Certifications & Quality Assurance Production Standards Pengze Technology manufactures 9049 76 7 hydroxypropyl starch ether under ISO 9001:2015 quality management system with strict process controls: Raw material traceability protocols Batch-to-batch consistency testing Automated quality monitoring systems Global Compliance Our products meet international regulatory requirements: REACH Annex XVII compliance FDA 21 CFR 172.892 approval (food grade) EU Construction Product Regulation GB/T 5009 standards (China) Selecting Hydroxypropyl Starch Ether Suppliers When sourcing CAS 9049 76 7 , evaluate suppliers based on: Production capabilities: Pengze utilizes continuous etherification reactors ensuring uniform substitution ratios. Quality verification: Third-party testing documentation availability Technical support: Formulation expertise and customized solution options Supply reliability: Maintaining inventory levels for consistent delivery "Leading producers employ HPLC-MS for hydroxypropyl distribution analysis, guaranteeing batch uniformity that significantly impacts performance in sensitive applications." - Polymer Science & Engineering Industry Research & References Functional Properties of Modified Starch in Construction Materials - Journal of Applied Polymer Science https://doi.org/10.1002/app.53281 Etherified Starch Derivatives: Production Technologies and Application Scopes - Carbohydrate Polymers https://doi.org/10.1016/j.carbpol.2023.120856 Performance Comparison of Cellulose vs Starch Ethers in Cementitious Systems - Advanced Building Materials Conference Proceedings https://www.abmconference.org/2023/proceedings/construction-chemicals Hydroxypropyl Starch as Pharmaceutical Excipient: Compendial Status - International Journal of Pharmaceutics https://doi.org/10.1016/j.ijpharm.2022.122217 This technical content has been compiled from industry sources for informational purposes. Product specifications subject to manufacturing batch variations. Contact Pengze Technology for current technical data sheets.