Molda SN75C is a hemihydrate formulated plaster used in ceramics to produce working moulds for the slip casting of sanitaryware and tableware.
Fine Particle size
Good balance between absorption and mechanical behaviour
Stable workability
| Chemical Properties | |
|---|---|
| Chemical Composition | CaSO4.1/2H2O |
| Colour | off-white |
| Minimum gypsum purity % | >92 |
| Setting Parameters | |
|---|---|
| Final setting time (minutes) | < 30 |
| Initial setting time (minutes) | 10 - 15 |
| Mechanical Properties | |
|---|---|
| Flexural Strength (MPa) | >4.0 |
| Physical Properties | |
|---|---|
| Loose bulk density (kg/m³) | 620 - 720 |
| Particle Size (% weight retained) |
< 6.0% at 63 µm <1% at 90 µm |
| Plaster to Water Ratio | |
|---|---|
| Plaster to Water Ratio (by weight) | 1.51:1 |
| Water to plaster ratio ( by weight) | 66% |
The recommended plaster to water ratio is from 1.43:1 to 1.51:1, with a mixing time of approx. 2 to 4 minutes, depending on batch size.Mixing utensils should always be clean and free from set plaster. Use clean water Only. For consistent results, attention must be given to the correct proportioning and mixing of the plaster and water.Add the weighed quantity of plaster slowly into the measured volume of water and allow to soak. Do not mix fresh plaster with that which has been mixed for some time previouslyChanges to plaster to water ratio will influence product performance, particularly setting time and strength and absorption capability.
Packaging available : 25 kg
Shelf life : 6 months
Packaging available : 1.05 T
Shelf life : 6 months