What This Grade Is For
Hydroxyethyl Cellulose Ether for Gypsum Adhesive is supplied by Yiyuantong Chemical as a water-retention agent and thickener in cement and gypsum based mixes. HEC is widely used in multiple industries due to its excellent thickening, suspension, moisturizing, solubility, and stability. HEC provides reliable functionality and performance in various application fields, becoming an indispensable component in many products.
Key Benefits
- Raises water retention so cement can hydrate fully instead of drying out on absorbent block work
- Extends open time, giving crews a longer window to place and adjust tiles or level a coat
- Controls sag on vertical and overhead work through suspension and thickening
- Improves adhesion to the substrate and reduces crack formation on the finished surface
- Held in stock: 800 tonnes of HEC are carried year round, and confirmed orders ship to the named port within 3 working days
Problems It Solves
- Water lost into porous substrates before the binder has hydrated, leaving weak, dusty surfaces
- Shrinkage cracks on skim coats and plasters that dry too quickly
- Tile adhesive that skins over before the tile is placed, so the bond is lost
- Sagging on vertical renders and ceiling plasters
Application Scenarios
- Tile adhesives and grouts
- Plastering and rendering mortars
- Wall putty and skim coats
- Self-levelling and repair mortars
- Gypsum based plaster and joint compound
Who It Is For
- Dry-mix mortar producers
- Wall putty and skim coat manufacturers
- Tile adhesive blenders supplying construction distributors
Technical Features
- Non-ionic backbone, so viscosity survives salt and hard water
- Cold-water soluble, no cooking step needed in the mixing room
- Supplied from 300 to 200000 mPa.s so the grade can be matched to the process
- Molar degree of substitution of 1.8 to 3.0 for biological stability and high transmittance
- Solvent process raises the degree of substitution by 30 to 35 percent against traditional routes
Technical Data And Packing
| Product Name | Hydroxyethyl Cellulose Ether |
|---|---|
| CAS No | 9004-62-0 |
| EINECS | 618-387-5 |
| Chemical Formula | (C2H6O2) n |
| Appearance | White or Almost White, Odorless, Tasteless Solid Powder |
| Viscosity | 300-200000 mPa.s |
| Transmittance | ≥80.0 % |
| Molar Degree of Substitution | 1.8-3.0 |
| Water Content | ≤5.0 % |
| Ash Content (as sulfate) | ≤6.0 % |
| PH（1%，Solution） | 6.0～8.5 |
Packing is 25 kg per bag as standard: an inner polyethylene plastic film bag inside an outer composite plastic woven bag. Other pack sizes are arranged on request.
Raw Materials
- High alpha-cellulose refined cotton
- Wood pulp with high cellulose content
- Ethylene oxide
Manufacturing Process
- Alkalisation of refined cotton and wood pulp
- Etherification with ethylene oxide
- Acetone countercurrent washing
- Drying and milling
- 40 mesh screening
- Lot testing and packing
Quality Control
- Every lot is tested in our own laboratory against the customer specification before release
- Third-party verification is available through SGS, which we have worked with on export lots
- Certificate of analysis issued with each shipment; HPLC or NMR data supplied on request
- Acetone countercurrent washing removes process residues before drying and milling
How It Compares
| Starch ethers | Cellulose ether carries the water retention; starch ether is usually added alongside it for anti-sag, not instead of it |
|---|---|
| Hydroxypropyl methyl cellulose | HPMC is the usual first choice in cement systems; HEC is used where higher enzyme resistance or a different hydration profile is wanted |
Use Guide
- Blend the powder dry with cement, sand and fillers before water is added; this avoids lumping entirely
- Dose against the dry mix weight and confirm by water retention testing on the final recipe
- Check open time and slip on the actual substrate, not on a glass plate
- Store sealed and dry; the powder is hygroscopic and will cake if bags are left open
Customisation Options
- Viscosity grade selected against your process, from 300 to 200000 mPa.s
- Private label bags printed with your own label content
- Packing sizes arranged to suit your blending line
- Sample shipment by FEDEX, DHL or EMS before a production order
Certification And Inspection
- SGS third-party inspection available on export lots
- Certificate of analysis issued with every shipment
- HPLC or NMR data supplied on request
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Industry Pages
Hydroxyethyl Cellulose Ether for Gypsum Adhesive FAQ
How is the dosage decided for a tile adhesive?
It is set by the water retention and open time you need, then confirmed on your own sand and cement. Send us the recipe and we will propose a starting grade and dose for testing.
Does it work in gypsum as well as cement?
Yes. In gypsum it retains water, improves lubrication and gives a slowing effect that solves drumming and early strength problems during application.
Are you a manufacturer or a trading company?
We are a manufacturer and you are welcome to visit the plant. Our hydroxyethyl cellulose project runs at 5000 tonnes a year on an acetone countercurrent washing process.
What payment terms do you accept?
L/C, T/T, D/A, D/P, PayPal and Western Union. We have worked with China Export and Credit Insurance Corporation for many years.
How fast can you ship?
Stock items are despatched within 5 days of payment. If the grade is not in stock, production and despatch take 7 to 10 days from payment.
Get A Price For Hydroxyethyl Cellulose Ether for Gypsum Adhesive
Send the quantity, the viscosity grade and the destination port. We reply with price, lead time and the lot analysis.