Product form:White to off-white powder
Hydroxypropyl Content: 9-12%
Methoxyl Content: 18-24%
Viscosity: 300-200,000 mPa.s
CAS No.: 9004-65-3
Email: sales03@eclatmat.com
Tel: +86-155 2251 6763
Free samples are available!
Hydroxypropyl methylcellulose powder is the dry, free-flowing form of HPMC — a white or off-white powder that turns into a clear, viscous solution the moment it meets water. It arrives at your plant as a stable solid precisely so you can control when and where that hydration happens: blended into a dry mortar bag, dispersed into a paint batch or metered into a liquid formulation.
The powder form is what makes HPMC a practical material rather than just a chemistry concept. Because the particles are free-flowing and the bulk density sits in a narrow 350–450 kg/m³ window, the product pours, weighs and disperses predictably from one batch to the next. What you buy is a nonionic cellulose ether with methoxyl content of 19–30%, hydroxypropyl content of 4–12%, a viscosity range of 300–200,000 mPa·s and water retention of 90% or more — all of it delivered in a powder you can store, handle and dissolve with confidence.
Every batch of hydroxypropyl methylcellulose powder is produced to the same specification and verified in the laboratory before release. A certificate of analysis accompanies each shipment.
| Parameter | Specification |
|---|---|
| Appearance | White or off-white powder |
| Viscosity | 300–200,000 mPa·s |
| Methoxyl content | 19–30% |
| Hydroxypropyl content | 4–12% |
| Bulk density | 350–450 kg/m³ |
| pH value | 6.0–7.0 |
| Water retention rate | ≥90% |
| Gelation temperature | 65–75°C |
The same powder is incorporated three different ways depending on the industry — and each route relies on the powder being dry, consistent and easy to disperse.
In a dry mix plant the powder is blended straight into cement, gypsum and sand. Because it is dry and free-flowing it distributes evenly through the bag, so every shovel of mix carries the same water-retention and thickening performance. On site, the installer simply adds water and the powder hydrates in place.
Paint formulators add the powder to the water phase under slow stirring so particles hydrate into a clear, lump-free thickener. Its pseudoplastic flow rebuilds coating body after the brush or roller passes, while pigments stay suspended through the can’s shelf life.
In liquid detergents, suspensions and gel systems the powder is dissolved ahead of time into a master solution at the exact viscosity grade the formula needs. Its nonionic nature keeps it compatible with surfactants, salts and pH ranges from 6.0–7.0 across the batch.
Every grade we supply is shipped in one dependable export format: a standard 25 kg bag with consistent net weight on every unit.
A powder is only as dependable as the plant that makes it. These are the reasons formulators keep ordering from our factory.
Every production batch is tested in our own laboratory before release — viscosity, methoxyl and hydroxypropyl content, pH, water retention rate and gelation temperature are verified against the specification sheet, and a certificate of analysis (COA) is issued for each shipment. Our chemists also help you match the right grade to your formulation and target viscosity.
Beyond the standard 25 kg bag, we offer flexible packaging customization — private-label and OEM bags printed with your brand, custom labelling for local markets, and packing formats arranged to your warehouse or project requirements. Share your specification with the order and we will confirm the details before production.
Kept in its sealed original packaging in a dry, cool warehouse, HPMC powder keeps its full specification for years. It is a stable solid; the only threat is moisture, which can cause caking or a slow loss of dissolution performance. Store bags off the floor and reseal them after each use.
Yes. Hydroxypropyl methylcellulose powder hydrates in cold water to form a clear, viscous solution without heating. Disperse it under slow stirring to avoid lumps, then allow the solution to hydrate fully for a few hours before final use for the most accurate viscosity reading.
The reliable method is to dry-blend the powder with another dry ingredient first, or to sprinkle it slowly into the vortex of stirred water so each particle wets individually. Adding it all at once to still water is what creates the familiar ‘fish-eye’ lumps that are slow to disappear.
Bulk density determines how much powder fits in a bag or hopper and how consistently the material doses. Our powder is held to 350–450 kg/m³, so a scoop, a bag or a silo loads with the same weight every time — which keeps your recipe stable batch after batch.
It depends on the job. Low-viscosity grades around 300–5,000 mPa·s give fluid, fast-dissolving solutions used in coatings and suspension aids; high grades up to 200,000 mPa·s give the heavy body and high water retention needed in tile adhesives and self-levelling compounds. Send us your formula target and we will match the grade.
Yes. Free samples and the batch COA ship typically within 24 hours of your inquiry to sales03@eclatmat.com, so you can test dissolution speed, viscosity and your own formulation before committing to a container order.
Tell us the viscosity grade and quantity you need. We will confirm pricing and dispatch a free powder sample with a COA — typically within 24 hours.
Email sales03@eclatmat.comTIANJIN ECLAT CO.,LTD.....[ read more>>]
Contact Person：Chris Liu
Tel：+86-22-29736899
Mobile Phone：+86-15522516763
WhatsApp: +86-15522516763
E-mail: sales03@eclatmat.com
Office: 1-1209, Borun Business Plaza, TEDA, Tianjin, China
Factory: Zhangjiu Village, Shucheng Town, Hejian City, Cangzhou City, Hebei Province
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