Cellulose ether
HEMC
Hydroxyethyl Methyl Cellulose
A mixed cellulose ether developed for gypsum-based plasters, joint compounds and self-levelling floors, where stable water retention and a long open time are needed.
Typical values
Technical parameters
Values describe the current standard grade. Confirm the revision on the technical data sheet for the grade and packing you intend to order.
| Parameter | Typical value |
|---|---|
| Appearance | White to off-white powder |
| Methoxy content | 15 – 22% |
| Hydroxyethoxy content | 5 – 12% |
| Moisture | ≤ 5% |
| pH, 1% solution | 5 – 8 |
| Gel temperature | 50 – 60°C |
| Viscosity, 2% at 20 °C | 20,000 – 100,000mPa·s |
Formulation
Application and dosage
Dosage is expressed as a percentage of dry mix weight. Values are starting points and should be confirmed with trial batches using local raw materials.
Gypsum plaster
0.20 – 0.45%
Check setting time with the gypsum source
Joint compound
0.30 – 0.50%
Adjust for trowel feel
Self-levelling floor
0.05 – 0.15%
Balance flow against bleeding
Need a starting formulation?
Share the application and target performance, and the technical team will suggest a trial starting point.
Supply
Packaging and storage
- 25 kg paper bag with PE liner
- Jumbo bags on request
Handling
Storage
- Store dry and away from direct sunlight
- Keep packaging closed after partial use
Shelf life
24 months from production date in unopened packaging
Documents
Technical documents
Documents are issued in the current revision. Request them with your company and destination market so the correct version is supplied.
HEMC technical data sheet
TDS · English · PDF
HEMC safety data sheet
SDS · English · PDF
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View productEnquiry
Request HEMC samples or a quotation
The form is pre-filled with this product. Add the application, target specification and destination market so the reply can include the right grade and packing options.