Interior plaster and repair
FINE PLASTER WITH CONTROLLED SETTING
Plaster of Paris (POP)
White fine gypsum plaster with published setting time, fineness and mechanical performance based on the supplied reference certificate.
REAL TECHNICAL DATA
A product page focused on setting, fineness and strength.
Plaster of Paris is supplied for compatible construction, casting and manufacturing applications. Commercial selection should match the working window, water ratio, mixing method and finished-product requirements.
The values below reproduce the supplied Certificate of Analysis. Lot-specific shipment results are confirmed in the applicable COA.

Performance and Physical Properties
Performance and Physical Properties
The values below reproduce the supplied Certificate of Analysis. Lot-specific shipment results are confirmed in the applicable COA.
| Property | Result | Unit |
|---|---|---|
| Water ratio | 70-75 | % |
| Physical state | Powder | |
| Appearance (color) | White fine powder | |
| Initial setting time | 8-12 | min |
| Final setting time | 15-22 | min |
| Fineness on 60 micron sieve | >90 pass | % |
| Soundness | No appearance of decay, bubbles or holes | |
| Combined water at 230 C | 5-6 | % |
| Compressive strength | >= 11 | MPa |
| Flexural strength | 2-5 | MPa |
Chemical Analysis
Chemical Analysis
| Property | Result | Unit |
|---|---|---|
| CaSO4.2H2O (purity, as reported) | >95 | % |
| SO3 | 46.5 | % |
| CaO | 32.00 | % |
| SiO2 / Al2O3 / Fe2O3 (reported together) | 0.165 | % |
| Na2O | 0.02 | % |
| K2O | 0.01 | % |
| MgO | 0.021 | % |
| Cl | 0.013 | % |
* The purity row and the grouped SiO2 / Al2O3 / Fe2O3 row are reproduced as shown in the source certificate, without reinterpretation.
Typical Applications
Typical Applications
Decorative cornices and castings
Ceramic moulds
Prefabricated gypsum elements
Model and art casting
Compatible industrial moulding processes
Information for Product Selection
Information for Product Selection
- Application and mixing method
- Required setting window or reference grade
- Water ratio, consistency and finish target
- Quantity, packing, destination and Incoterm
AFRICA MARKET
Buying POP for an African market?
Use the POP Africa page to share country, port, application, target setting time, quantity, monthly demand and preferred bag-size request.
Buying Plaster of Paris: What to Confirm
Which specification should you send?
State the intended application and required setting-time, fineness, strength or other acceptance criteria. Include your current grade specification, packing preference and trial or shipment quantity.
How should you compare a proposed source?
Share your current TDS or agreed specification, required test methods and acceptance limits. Request the relevant documents for the proposed grade and discuss sample or trial arrangements before confirming repeat supply.
What is needed for an export quotation?
Send the shipment quantity, estimated repeat demand, packing, destination and preferred Incoterm. CFR or CIF requires current freight. Final availability, specifications, documentation and terms are confirmed in the offer.
Need POP matched to your production cycle?
Send the application, target setting time, quantity, packing and destination.
