Calcium hydroxide
SIGALD/239232 - ACS reagent, ≥95.0%
CAS Number: 1305-62-0
Empirical Formula (Hill Notation): H2CaO2
Molecular Weight: 74.09
EC Number: 215-137-3
MDL Number: MFCD00010901
Linear Formula: Ca(OH)2
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 239232-100G
This image depicts SKU: 239232-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 239232-500G
This image depicts SKU: 239232-500G
| anion traces | chloride (Cl-): ≤0.03% |
| assay | ≥95.0% |
| cation traces | Fe: ≤0.05% |
| heavy metals: ≤0.003% (by ICP) | |
| K: ≤0.05% | |
| Mg: ≤0.5% | |
| Na: ≤0.05% | |
| Sr: ≤0.05% | |
| density | 2.24 g/mL at 25 °C (lit.) |
| form | powder |
| grade | ACS reagent |
| impurities | ≤0.03% insol. in HCl |
| ≤0.1% S compounds | |
| ≤3.0% calcium carbonate | |
| InChI | 1S/Ca.2H2O/h;2*1H2/q+2;;/ |
| InChI key | AXCZMVOFGPJBDE-UHFFFAOYSA |
| pH | 12.4-12.6 (20 °C) |
| Quality Level | 200  |
| SMILES string | O[Ca]O |
| Application: | Calcium hydroxide can be used: • In the pretreatment of technical lignin during the pyrolysis in a fluidized bed reactor to overcome the agglomeration to produce phenolic-rich bio-oil. • As a catalyst in the pyrolysis of pinewood in a fixed bed reactor. |
| General description: | Calcium hydroxide is commonly used in wastewater treatment plants (WWTPs) to adjust pH. Calcium hydroxide has numerous applications due to its strong basic characteristics. Uses include flocculants in water and sewage treatment, a whitewash ingredient, soil improvement, as a lye substitute in non-lye hair relaxers, and in the liming industry to neutralize the acid. |
| Packaging: | 100, 500 g in poly bottle |
| Packaging: | 2.5 kg in poly drum |
| Symbol |   GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H315 - H318 - H335 |
| Precautionary statements | P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338 |
| Hazard Codes | Xi |
| Risk Statements | 37/38-41 |
| Safety Statements | 26-39 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥95.0% |
| Density | 2.24 g/mL at 25 °C (lit.) |
| UNSPSC | 12352300 |