Hydroxypropyl Methylcellulose
HPMC
HPMC is a non-ionic cellulose ether used in cement and gypsum-based mortars as a water-retention agent and thickener.
HPMC
Stocked gradeViscosity (2% aq.): ~200,000 mPa·s
Overview
Hydroxypropyl Methylcellulose
HPMC (hydroxypropyl methylcellulose) is a non-ionic cellulose ether used in cement and gypsum-based mortars as a water-retention agent and thickener. It stops the mix from drying out before the cement can hydrate, which is what gives tile adhesive its open time, wall putty its smooth trowel feel, and plaster its sag resistance.
In dry-mix mortar it supports water retention, open time, adjustability, thickening, anti-sag, lubricity and workability.
Applications
What it is used for
Wall putty and skim coat
Cement render and plaster
Gypsum plaster and jointing compound
Tile grout and pointing mortar
Cementitious waterproofing slurry
Paints, coatings and adhesives
Home care and detergent
Product data
Typical properties
AppearanceWhite to off-white free-flowing powder
Viscosity (2% solution)~200,000 mPa·s stocked grade
DissolutionDelayed / easy dispersing
Moisture content≤ 5.0%
pH (1% solution)5.0–8.0
Surface treatmentAvailable
Refer to the current manufacturer technical data sheet for the governing specification.
Handling
Packaging & storage
25 kg bag, or repacked from 1 kg
Store dry, sealed, off the floor and away from direct sunlight.
Shelf life: 24 months in original unopened packaging.
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