Factory Supply HPMC Refined Cotton Pure White Thickener, OEM

If you work with dry-mix mortars, tile adhesives, or skim coats, you’ve probably heard plenty about cellulose ethers. The one I’ve been watching closely is Factory Supply Directly Construction Material Powder Thickener Additive Chemical Auxiliary Agent HPMC Refined Cotton Pure White. Originating from No.1 Shifu East Road, Gaocheng District, Shijiazhuang, Hebei, China, it comes from a region that’s basically the world’s cellulose ether workshop. Supply capacity? 50 tons per day—meaning you won’t get stuck waiting during peak season.

What’s trending and why it matters

Contractors want faster trowelability, longer open time, and fewer callbacks for slip or cracks. In fact, many customers say consistency from batch to batch matters more than chasing the highest viscosity. The Factory Supply Directly Construction Material Powder Thickener Additive Chemical Auxiliary Agent HPMC Refined Cotton Pure White line is tuned for water retention and workable rheology—especially in cement and gypsum systems. To be honest, that balance is the whole game.

Key technical specifications (typical)

Property	Value (≈, real-world use may vary)
CAS No.	9004-65-3
Appearance	Pure white free-flowing powder (refined cotton origin)
Viscosity (Brookfield, 2% sol., 20°C)	50,000–200,000 mPa·s
Moisture	≤5%
Ash (sulfated)	≤5%
pH (1% sol.)	6–8
Water retention in mortar	≥95% (ASTM C1506 proxy)

Process flow and QA (short version)

• Materials: Refined cotton pulp, propylene oxide, methyl chloride, alkali catalyst, solvent.
• Methods: Alkalization → Etherification → Neutralization → Washing → Drying → Milling → Sieving (≈80–120 mesh).
• Testing standards: HG/T 2201-type methods for HPMC; mortar evaluations via ASTM C1437 (flow), ASTM C191 (setting), EN 12004-2 and JC/T 547 for tile adhesives, EN 1015-12 (bond strength).
• Service life: Shelf life 24 months sealed, dry (
• Industries: Construction dry-mix, putty/skim coats, tile adhesives, EIFS/ETICS basecoats, self-leveling underlayments, gypsum plasters.

Where it’s used (and why)

In tile adhesive, it boosts slip resistance and open time; in skim coats, it reduces pinholes and burnish. For self-levelers, dosage is lower—otherwise viscosity gets too high. I guess the sweet spot is tailoring grade to the binder and climate.

Vendor snapshot (quick comparison)

Vendor	Strengths	Potential Trade-offs
Youngcel (yongfeng)	Stable viscosity grades; fast lead time; application lab support; 50 t/day capacity	MOQ may apply; premium for specialty grades
Supplier A (generic)	Lower initial price	Batch variability, less tech support
Supplier B (regional)	Local stock, rapid delivery	Limited viscosity range, fewer certifications

Customization options

• Viscosity grade bands and substitution levels (hydroxypropyl/methyl).
• Surface treatment for delayed solubility (better dispersibility in high-speed mixers).
• Particle size tuning; anti-caking; specific ash targets for white cement systems.

Field results (condensed case notes)

EU tile adhesive (C2TE): replacing import grade with Factory Supply Directly Construction Material Powder Thickener Additive Chemical Auxiliary Agent HPMC Refined Cotton Pure White improved open time by ≈25 min (EN 12004-2), slip reduced to ≤0.3 mm; bond strength after water immersion 1.2–1.4 MPa. Middle East gypsum skim coat: water demand down ≈3%, trowel feel “creamier,” fewer edge tears. ASEAN self-leveler: dosage trimmed to 0.15% for flow retention without over-gelling. Surprisingly consistent across humidity swings.

Compliance, test data, and feedback

• Certifications: ISO 9001:2015 QMS; REACH pre-registered; RoHS non-restricted (self-declared; verify per lot).
• Lab data snapshot: water retention 95–98%; mortar slump control per ASTM C1437 within 165±5 mm at target water.
• Customer notes: “Less drag on the blade,” “fewer callbacks on vertical work.”

If you’re scaling production, the Factory Supply Directly Construction Material Powder Thickener Additive Chemical Auxiliary Agent HPMC Refined Cotton Pure White portfolio offers a solid baseline—and, actually, the tech support matters as much as the powder.

Authoritative citations

1. ASTM C1437 – Standard Test Method for Flow of Hydraulic Cement Mortar. https://www.astm.org/c1437
2. ASTM C191 – Time of Setting of Hydraulic Cement by Vicat Needle. https://www.astm.org/c0191
3. EN 12004-2 – Adhesives for tiles: Test methods. https://standards.cen.eu
4. EN 1015-12 – Methods of test for mortar for masonry: Adhesive strength. https://standards.cen.eu
5. ISO 9001:2015 – Quality management systems. https://www.iso.org/standard/62085.html