Cobalt(II) hydroxide
- CAS No.
- 21041-93-0
- Chemical Name:
- Cobalt(II) hydroxide
- Synonyms
- COBALT HYDROXID;t(II) hydroxide;Cobalt hydroxide;cobaltdihydroxide;Cobalt(II)hydroxi;cobaltoushydroxide;cobalt(2+)hydroxide;cobalt (Ⅱ) hydroxide;COBALT(II) HYDROXIDE;Cobalt(II)dihydoxide
- CBNumber:
- CB0716301
- Molecular Formula:
- CoH2O2
- Molecular Weight:
- 92.95
- MOL File:
- 21041-93-0.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/10/17 17:11:54
| Melting point | °Cd ec.) |
|---|---|
| Density | 3.597 g/mL at 25 °C(lit.) |
| vapor pressure | 0Pa at 20℃ |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | slightly soluble in H2O; soluble in acid solutions |
| form | Powder |
| Specific Gravity | 3.597 |
| color | Pink to purple |
| PH | 9.15(1 mM solution);9.15(10 mM solution);9.15(100 mM solution) |
| Water Solubility | Soluble in acids and ammonia. Very slightly soluble in water. Insoluble in dilute alkalis. |
| Sensitive | Air Sensitive |
| Merck | 14,2442 |
| Solubility Product Constant (Ksp) | pKsp: 14.23 |
| Exposure limits | ACGIH: TWA 0.02 mg/m3 |
| Stability | Stability |
| CAS DataBase Reference | 21041-93-0(CAS DataBase Reference) |
| EPA Substance Registry System | Cobalt hydroxide (Co(OH)2) (21041-93-0) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS06,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H317-H319-H330-H334-H350-H360-H410 | |||||||||
| Precautionary statements | P273-P280-P301+P312-P302+P352-P304+P340+P310-P305+P351+P338 | |||||||||
| Hazard Codes | Xn,N | |||||||||
| Risk Statements | 20/21/22-36/37/38-50/53-42/43-40-20/22 | |||||||||
| Safety Statements | 26-37/39-36 | |||||||||
| RIDADR | UN 3077 9 / PGIII | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | GG0904500 | |||||||||
| TSCA | Yes | |||||||||
| NFPA 704 |
|
Cobalt(II) hydroxide price More Price(5)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 342440 | Cobalt(II) hydroxide technical grade, 95% | 21041-93-0 | 250G | ₹7653.28 | 2022-06-14 | Buy |
| ALFA India | ALF-B22045-30 | Cobalt(II) hydroxide, 97% | 21041-93-0 | 250g | ₹7592 | 2022-05-26 | Buy |
| ALFA India | ALF-B22045-18 | Cobalt(II) hydroxide, 97% | 21041-93-0 | 50g | ₹2246 | 2022-05-26 | Buy |
| ottokemi | C 4749 | Cobalt(II) hydroxide, 95% | 21041-93-0 | 250gm | ₹7092 | 2022-05-26 | Buy |
| ottokemi | C 4749 | Cobalt(II) hydroxide, 95% | 21041-93-0 | 1kg | ₹25092 | 2022-05-26 | Buy |
Cobalt(II) hydroxide Chemical Properties,Uses,Production
Description
The addition of alkali metal hydroxides to solutions of cobalt(II) salts results in the precipitation of cobalt(II) hydroxide in either a blue or pink form depending upon the conditions. The pink form is the more stable of the two and is obtained when a suspension of the blue form is allowed to stand or is warmed. Cobalt(II) hydroxide is amphoteric, dissolving in alkalis to form blue solutions of the [Co(OH)4]2- ions. In the presence of alkali, suspensions of Co(OH) are oxidized by air to the brown CoO(OH), this oxidation being brought about rapidly by oxidants such as hypochlorite, bromine water or hydrogen peroxide. The pink Co(OH)2 (density 3.597) has the brucite (Mg(OH)2) structure in which the cobalt atoms are surrounded by six hydroxides. The blue form is more disordered, but its structure is not known for certain.
Chemical Properties
Rose-red powder.Soluble in acids and ammonium salt solutions; insoluble in water and alkalies.
Uses
Cobalt(II) hydroxide is used as a drying agent for paints and varnishes. It acts as an aid to dry the lithographic inks and catalyst in the preparation of battery electrode impregnating solutions. It is also involved in the synthesis of other cobalt compounds.
Cobalt(II) hydroxide Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| S.K. CHEMICAL INDUSTRIES | +91-22-66370299 Ext 21 / 91-22-23437380 Ext 25 | New Delhi, India | 262 | 30 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Alfa Aesar | 1 800 209 7001 | Maharashtra, India | 6913 | 58 | Inquiry |
| Intelligent Materials Private Limited | 08048953178 | Punjab, India | 197 | 58 | Inquiry |
| SIMAGCHEM CORP | +86-13806087780 | China | 17367 | 58 | Inquiry |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21675 | 55 | Inquiry |
| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 | China | 6387 | 58 | Inquiry |
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | China | 39916 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29826 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| S.K. CHEMICAL INDUSTRIES | 30 |
| A.J Chemicals | 58 |
| Otto Chemie Pvt. Ltd. | 58 |
| Alfa Aesar | 58 |
| Intelligent Materials Private Limited | 58 |
| SIMAGCHEM CORP | 58 |
| Henan Tianfu Chemical Co.,Ltd. | 55 |
| Xiamen AmoyChem Co., Ltd | 58 |
| Chongqing Chemdad Co., Ltd | 58 |
| career henan chemical co | 58 |
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