CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Plaster of paris appears as white or yellowish, finely divided, odorless powder consisting mostly or entirely of calcium sulfate hemihydrate, CaSO4*1/2H2O. Forms a paste when it is mixed with water that soon hardens into a solid. Used in making casts, molds, and sculpture. Generally non-toxic. |
|---|---|
| Melting Point | 325 °F (Loses H2O) (NIOSH, 2023) |
| Solubility | 0.3 % at 77 °F (NIOSH, 2023) |
| Density | 2.5 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Pressure | 0 mmHg (approx) (NIOSH, 2023) |
| Chemical Classes | Mineral Dusts -> Other Mineral Dusts |
COMPUTED DESCRIPTORS
| Molecular Weight | 290.3 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 0 |
| Exact Mass | 289.8392057 g/mol |
| Monoisotopic Mass | 289.8392057 g/mol |
| Topological Polar Surface Area | 178 Ų |
| Heavy Atom Count | 13 |
| Formal Charge | 0 |
| Complexity | 62.2 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 5 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Plaster of paris appears as white or yellowish, finely divided, odorless powder consisting mostly or entirely of calcium sulfate hemihydrate, CaSO4*1/2H2O. Forms a paste when it is mixed with water that soon hardens into a solid. Used in making casts, molds, and sculpture. Generally non-toxic.