Slaked Lime
- CAS No.
- 1305-62-0
- Chemical Name:
- Slaked Lime
- Synonyms
- Ca(OH)2;HYDRATED LIME;SLAKED LIME;LIME WATER;carboxide;CARBIDE LIME;CALCIUM HYDRATE;Calciumhydroxid8;Calcium Hydroxide Topical Solution;calvit
- CBNumber:
- CB00132031
- Molecular Formula:
- CaH2O2
Lewis structure
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- Molecular Weight:
- 74.09
- MDL Number:
- MFCD00010901
- MOL File:
- 1305-62-0.mol
- MSDS File:
- SDS
| Melting point | 580 °C |
|---|---|
| Boiling point | 2850 °C |
| Density | 2.24 g/mL at 25 °C (lit.) |
| storage temp. | Store at +5°C to +30°C. |
| solubility | 1.7g/l |
| form | Solid |
| pka | 12.6[at 20 ℃] |
| color | White |
| Odor | Odorless |
| PH Range | 12.4 |
| PH | 11.27(1 mM solution);12.2(10 mM solution);12.46(100 mM solution); |
| Water Solubility | 1.65 g/L (20 ºC) |
| Sensitive | Air Sensitive |
| Merck | 14,1673 |
| Solubility Product Constant (Ksp) | pKsp: 5.26 |
| Exposure limits |
ACGIH: TWA 5 mg/m3 OSHA: TWA 15 mg/m3; TWA 5 mg/m3 NIOSH: TWA 5 mg/m3 |
| Stability | Stable. Incompatible with strong acids. |
| CAS DataBase Reference | 1305-62-0(CAS DataBase Reference) |
| FDA 21 CFR | 184.1205; 582.1205; 310.545 |
| Substances Added to Food (formerly EAFUS) | CALCIUM HYDROXIDE |
| SCOGS (Select Committee on GRAS Substances) | Calcium hydroxide |
| EWG's Food Scores | 1-4 |
| FDA UNII | PF5DZW74VN |
| NIST Chemistry Reference | Calcium dihydroxide(1305-62-0) |
| EPA Substance Registry System | Calcium hydroxide (1305-62-0) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H315-H318-H335 | |||||||||
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 | |||||||||
| Hazard Codes | Xi,C | |||||||||
| Risk Statements | 41-34-37/38 | |||||||||
| Safety Statements | 26-39-45-36/37/39-27 | |||||||||
| RIDADR | 3262 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | EW2800000 | |||||||||
| F | 34 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 2825 90 19 | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | III | |||||||||
| Toxicity | LD50 orally in rats: 7.34 g/kg (Smyth) | |||||||||
| NFPA 704 |
|
Slaked Lime price More Price(57)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 239232 | Calcium hydroxide ACS reagent, ≥95.0% | 1305-62-0 | 2.5kg | $220 | 2024-03-01 | Buy |
| Sigma-Aldrich | 1.02119 | Calcium hydroxide precipitated (≤ 0.0005% Al) EMPROVE? ESSENTIAL USP,FCC,E 526 | 1305-62-0 | 0.5kg | $215 | 2024-03-01 | Buy |
| Sigma-Aldrich | 1.02110 | Calcium hydroxide EMPROVE? ESSENTIAL, Ph. Eur., BP, JP, USP, FCC, E 526 | 1305-62-0 | 1KG | $79 | 2024-03-01 | Buy |
| Sigma-Aldrich | 1.02110 | Calcium hydroxide EMPROVE? ESSENTIAL Ph Eur,BP,USP,JP,FCC,E 526 | 1305-62-0 | 25kg | $240 | 2024-03-01 | Buy |
| Sigma-Aldrich | 1.02111 | Calcium hydroxide for the preparation of DIN 19266 pH standard buffer solutions | 1305-62-0 | 25g | $307 | 2024-03-01 | Buy |
Slaked Lime Chemical Properties,Uses,Production
Chemical Properties
Slaked Lime is a caustic, inflammable, white (or white-and-beige) powder having a crystalline structure. Slaked Lime solutions can cause chemical burns. At high pH values due to a common-ion effect with the hydroxide anion, its solubility drastically decreases. Aqueous solutions of Slaked Lime are called limewater and are medium-strength bases, which react with acids and can attack some metals such as aluminium(amphoteric hydroxide dissolving at high pH), while protecting other metals, such as iron and steel, from corrosion by passivation of their surface.
Physical properties
Slaked Lime is poorly soluble in water, with a retrograde solubility increasing from 0.66 g/L at 100 °C to 1.89 g/L at 0 °C. With a solubility product Ksp of 5.02×10−6 at 25 °C. At ambient temperature, Slaked Lime dissolves in water to produce an alkaline solution with a pH of about 12.5.
Uses
1.Slaked Lime is used for preparing bleaching powders, hard water softeners and the disinfecting and clarifying agents of tap water , as well as in building industry;
2.Used as rubber and oil industry additives. Used in lubricants for preventing coking, sludge deposition and anti-corrosion. Used as hard water softeners, disinfectants, antacids and so on;
3. Used as analytical reagents, carbon dioxide absorbents, as well as in organic synthesis;
4. Used for making bleaching powder, hard water softener, depilatory, disinfectant, acid stop agent, astringent and various calcium salts;
5. Use for carbon dioxide examination and gas absorption. Used for leather hair removal, insecticide and water treatment.
Production Methods
Slaked lime is produced when water is added to calcium oxide (CaO, or quicklime). The result of this mixing of water and calcium oxide (quicklime) is an exothermic reaction known as slaking. The slaking reaction produces calcium hydroxide, (Ca(OH)2).
Health Hazard
Unprotected exposure to Slaked Lime, as with any strong base, can cause severe skin irritation, chemical burns, blindness, lung damage or rashes.
Safety
Wear impervious protective clothing, including boots, gloves, lab coat, apron, or coveralls, to prevent skin contact.
Dust irritates the respiratory tract. Symptoms may include coughing and shortness of breath. It can cause chemical bronchitis. Ingestion may be followed by severe pain, vomiting, diarrhea, and collapse. Corrosive. Skin and eye contact may produce severe irritation and pain.
Structure and conformation
Slaked Lime adopts a polymeric structure, as do all metal hydroxides. The structure is identical to that of Mg(OH)2 (brucite structure); i.e., the cadmium iodide motif. Strong hydrogen bonds exist between the layers.
Incompatibilities
Incompatible with strong acids, maleic anhydride, phosphorus, nitroethane, nitromethane, nitroparaffins, and nitropropane. Calcium hydroxide can be corrosive to some metals.
Slaked Lime Preparation Products And Raw materials
Raw materials
Preparation Products
1of8
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 19368 | 58 |
| Yujiang Chemical (Shandong) Co.,Ltd. | +86-17736087130 +86-18633844644 | catherine@yjchem.com.cn | China | 789 | 58 |
| Hebei Youfeidi Trading Co., LTD | +8615530197691 | admin@yfdchem.cn | China | 90 | 58 |
| Jiangsu Kolod Food Ingredients Co.,Ltd. | +86-518-85110578 +8618805133257 | sales3257@jskolod.com | China | 132 | 60 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 | info@tnjchem.com | China | 2989 | 55 |
| Shanghai Zheyan Biotech Co., Ltd. | 18017610038 | zheyansh@163.com | CHINA | 3620 | 58 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29914 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 | alice@crovellbio.com | China | 8829 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 | sales@amoychem.com | China | 6387 | 58 |
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