Product Advantages
- Workability & Consistency Booster — Designed to significantly improve mortar consistency and flowability (liquidity).
- Water-Retention Support — Helps maintain workable performance through improved water retention.
- Open-Time Extension — Provides longer open time for more flexible application and finishing.
- Easy Dissolution & Formulation Friendly — Easily soluble in water and compatible with other additives for stable dry-mix formulations.
Technical Specification
| Appearance | white or off-white powder |
| Hydroxypropyl (%) | 20-30 |
| pH (25℃) | 7.4-11.5 |
| Fineness (μm ) | ＜150 |
| Water content (%) | ＜10 |
| Viscosity (5% aqueous solution）, mPa.s | 10000-14000 |
| Bulk density （kg/m3） | 480-550 |
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Product Applications
SE-31 Hydroxypropyl Starch Ether (HPS) is recommended for building mortar and construction dry-mix formulations where improved consistency, flowability, and longer open time are required, including:
Cement-based mortars (general-purpose building mortars)
Dry-mix mortar systems requiring improved workability and liquidity
Construction dry-mix formulations used for mixing, troweling, and finishing processes
Other related building mortar applications where compatibility with other additives is needed
Dosage Guideline:
For best results, the recommended dosage should be optimized based on your raw materials and target performance.
Need custom formulations or comparative testing?
Contact BOTAI’s technical team for customized formulation support and performance consultation.
Contact Botai R&D Team
Packaging & Delivery
- Standard packaging:25 kg net paper bags or on cIients’ requirement
- OEM or neutral packaging available upon request
- Minimum Order Quantity (MOQ): 3 metric tons.
- Typical lead time: 7–15 days after order confirmation
- Trade terms: FOB / CIF / DDP under Incoterms® 2020
Storage and Shelf life
- Store in a dry and cool place.
- High humidity and temperature increase the risk of caking.
- Do not stack pallets on top of each other to avoid compaction.
- “Best use before end” date is on the label; storage beyond it doesn’t necessarily mean unusable, but required properties must be checked for quality assurance.
Safety & Compliance
SE-31 Starch Ether is safe, non-toxic, and environmentally friendly. Starch Ether is safe, non-toxic, and environmentally friendly. It complies with ISO 9001 and EU REACH standards.
For detailed handling and safety information, refer to the MSDS.
Email:
[email protected]About Henan Botai Chemical Building Materials Co., Ltd.
Established in 2004, Botai Chemical is a certified manufacturer specializing in Redispersible Polymer Powder, Cellulose Ethers (HPMC/HEMC/HEC), Calcium Formate, and Superplasticizers (SMF/PCE). Our products are widely used in dry-mix mortars, paints, oil drilling, feed, and detergent applications.
As a member of China’s Building Materials and Ceramic Industry Associations, Botai is actively involved in R&D and innovation for tile adhesive and repair materials. We operate two advanced R&D centers and hold over 25 patents and 20 registered trademarks.
With ISO 9001, EU REACH, HALAL, and FAMI-QS certifications, Botai ensures consistent quality and sustainable manufacturing. Our annual capacity exceeds 100,000 tons across VINNATE®, VAMCELL®, BOMCELL®, THYLOCELL®, FORCA®, and DEMACSA® product lines.
Our Certificate
Customer Case
Why Choose Us?
Factory established in 2004, backed by 20+ years of manufacturing expertise and over 60,000 m² of modern production facilities
Trusted by customers in 100+ countries and regions, with stable export supply and responsive service
One of China’s leading manufacturers of construction chemical additives, with a total annual capacity exceeding 100,000 tons
Two advanced R&D centers with full in-house laboratories and patented formulation capabilities
Certified quality and production systems: ISO 9001, EU REACH, HALAL, FAMI-QS
25+ patented technologies and 20+ registered trademarks, including VINNATE®, VAMCELL®, BOMCELL®, THYLOCELL® and more
Dedicated QC management and global technical support teams ensuring fast response and reliable service
Strong supply stability with long-term raw material partnerships and automated production lines, ensuring consistent quality and on-time delivery
FAQ
Yes, we offer 200–500 g samples for testing with TDS/SDS.
Yes, we customize grades based on adhesion strength, open time, and workability requirements.
Pre-production sample testing is always conducted before mass production to ensure consistency and compliance.
Final inspection before shipment is strictly implemented to verify product quality, packaging, and labeling accuracy.
All production processes are managed under ISO 9001 quality management system to maintain stable quality performance.
SE-31 is a Hydroxypropyl Starch Ether (HPS) additive developed for building mortar systems to improve consistency, liquidity (flowability), and open time in construction dry-mix formulations.
SE-31 is widely used in building mortar formulations and related construction dry-mix applications, including cement-based mortars and other dry-mix systems that require improved workability, flowability, and longer open time.
Yes. SE-31 is easily soluble in water and offers good compatibility with other common additives, making it formulation-friendly for stable dry-mix system.
