High Quality BT-826 Zinc Stearate 325 Mesh White Powder For NC Wood Primer and Wall Putty

BT-826 Zinc Stearate is produced through a modified fusion process using high-quality stearic acid, and is specially modified for NC-based wood coatings. It offers excellent sandability and good dispersibility, while maintaining non-toxicity, non-sulfide staining, and minimal initial color formation—helping improve finishing efficiency and coating appearance in NC wood primer systems.

Key Benefits:

Excellent sandability — Helps improve sanding performance in NC-based wood primer applications.

Good dispersibility — Supports smoother dispersion for more uniform formulation performance.

Non-toxic — Suitable for manufacturing use scenarios where non-toxicity is required.

Non-sulfide staining — Helps avoid sulfide-related staining issues.

Little initial colour formation — Maintains low initial color formation for cleaner appearance.

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Product Advantages

  • Made for NC wood coatings — Produced via a modified fusion process using high-quality stearic acid, and specially modified for NC-based wood coating.
  • Consistent technical parameters — White powder; Zinc content 5.8–6.8%; Free fatty acid ≤1.0%; Moisture ≤5.0%; Fineness 325 mesh (98% passed); Bulk density 250–350 g/L.
  • Defined solubility behavior — Insoluble in water/alcohol/ether; soluble in benzene, acids or common solvents when hot.
  • Storage & packing ready for export — Shelf life at least 12 months under dry and cool conditions; available in 20 or 25 kg paper bags.
  • Clear application direction — Recommended for NC-based wood primer (as sanding agent) and wall putty (as filler and waterproofing agent).

Technical Specification

ItemIndex
AppearanceWhite Powder
Zinc Content (%)5.8-6.8
Free Fatty Acid (%)≤1.0
Moisture (%)≤5.0
Fineness (mesh)325mesh (98% passed)
Bulk Density (g/L)250~350g/l

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Product Applications

Zinc Stearate product is recommended for use in NC-based wood primer as a sanding agent, and in wall putty as a filler and waterproofing agent:

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: BT-826 is available in 20 or 25kgs paper bags
  • 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.
  • At least 12 months
  • For storage period over shelf life, quality confirmation tests should be taken before use

Safety & Compliance

BT-826 Zinc Stearate 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.

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.

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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

Can I get a free sample?

Yes, we offer 200–500 g samples for testing with TDS/SDS.

Do you support custom formula or OEM brand?

Yes, we customize grades based on adhesion strength, open time, and workability requirements.

How We Guarantee Quality?

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.

What is Zinc Stearate BT-826?

BT-826 is a zinc stearate product made via a modified fusion process using high-quality stearic acid, and it is specially modified for NC-based wood coating applications

What are the recommended applications of BT-826?

It is suggested for NC-based wood primer as a sanding agent, and for wall putty as a filler and waterproofing agent.

Is BT-826 soluble in water?

No. BT-826 is insoluble in water, alcohol, and ether, but it is soluble in benzene, acids, or common solvents when hot.

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