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Hydroxypropyl Starch 9049-76-7 | Premium Ether Supplier

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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 (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

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.

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