Calcium dihydroxide is a calcium hydroxide. It has a role as an astringent.
Corrosive
Irritant
⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).
Calcium dihydroxide is a calcium hydroxide. It has a role as an astringent.
| Physical Description | Calcium hydroxide is an odorless white granules. Sinks in water. (USCG, 1999) |
| Color/Form | Crystals or soft granules or powder |
| Odor | Odorless |
| Melting Point | 1076 °F (Decomposes) (Loses H2O) (NIOSH, 2024) |
| Boiling Point | Decomposes (NIOSH, 2024) |
| Flash Point | /Calcium Hydroxide is/ non flammable |
| Density | 2.24 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | 0.2 % at 32 °F (NIOSH, 2024) |
| Vapor Pressure | 0 mmHg (approx) (NIOSH, 2024) |
| Refractive Index | Index of refraction: 1.574 (alpha), 1.545 (beta) |
| Stability/Shelf Life | Readily absorbs carbon dioxide from air forming calcium carbonate. |
| IUPAC Name | calcium dihydroxide |
| Molecular Formula | CaH2O2 |
| Molecular Weight | 74.09 g/mol |
| CAS | 1305-62-0 |
| SMILES | [OH-].[OH-].[Ca+2] |
| InChIKey | AXCZMVOFGPJBDE-UHFFFAOYSA-L |
| Catalog No | KC.1210102 |
| Pack sizes | 500ML |
⚠️ For information only; not a substitute for the official SDS.