?????
|
|
????? ??
- ???
- 55 °C(lit.)
- ?? ??
- 800kg/m3
- ??
- 1.88
- ???
- 1.52
- ?? ??
- Store at +5°C to +30°C.
- ???
- 2170g/l
- ??? ??
- ?? ??? ???
- ??
- ????? ???? ?? ??
- Specific Gravity
- 1.87
- ??????(pH)
- 4.0 (100g/l, H2O, 20℃)
- ???
- 134g/100mL
- Merck
- 14,2444
- ?? ??
- ACGIH: TWA 0.02 mg/m3
- ???
- ????. ?? ??? - ???? ???? ????.
- InChI
- 1S/Co.2NO3.6H2O/c;2*2-1(3)4;;;;;;/h;;;6*1H2/q+2;2*-1;;;;;;
- InChIKey
- QGUAJWGNOXCYJF-UHFFFAOYSA-N
- SMILES
- O.O.O.O.O.O.[Co++].[O-][N+]([O-])=O.[O-][N+]([O-])=O
- CAS ??????
- 10026-22-9(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | O,Xn,N,T | ||
|---|---|---|---|
| ?? ???? ?? | 8-22-40-43-50/53-42/43-36/37/38-68-20-60-49 | ||
| ????? | 17-36/37-60-61-45-36/37/39-26-22-53 | ||
| ????(UN No.) | UN 1477 5.1/PG 2 | ||
| WGK ?? | 2 | ||
| RTECS ?? | QU7355500 | ||
| TSCA | Yes | ||
| ?? ?? | 5.1 | ||
| ???? | III | ||
| HS ?? | 28342920 | ||
| ???? ??? | 5.1B - Oxidizing hazardous materials | ||
| Hazard Classifications | Acute Tox. 4 Oral Aquatic Acute 1 Aquatic Chronic 1 Carc. 1B Inhalation Eye Dam. 1 Muta. 2 Ox. Sol. 2 Repr. 1B Resp. Sens. 1 Skin Sens. 1 STOT RE 2 Inhalation |
||
| ?? | LD50 orally in rats: 691 mg/kg (Speijers) |
????? C??? ??, ??, ??
??? ??
Red crystal, deliquescent in most air??
Preparation of cobalt standard solutions.?? ??
The red hygroscopic hexahydrate Cu(NO3)2.6H2O crystallizes from aqueous solutions of cobalt bases in dilute nitric acid at room temperature. It becomes the trihydrate when heated at 56° ; at higher temperatures decomposition occurs.??
ChEBI: A hydrate that is the hexahydrate form of cobalt dinitrate.?? ??
Cobalt(II) nitrate hexahydrate (Co(NO3)2·6H2O) is the hydrated cobalt salt. Its step-wise thermal degradation has been investigated. It affords anhydrous cobalt(II)nitrate as decomposition product.Purification Methods
Crystallise the nitrate from water (1mL/g), or ethanol (1mL/g), by partial evaporation. After 3 crystallisations from H2O it contains: metal (ppm) As (8), Fe (1.2), K (1), Mg (4), Mn (4), Mo (4), Na (0.6), Ni (18), Zn (1.6). The hexahydrate gives the pink anhydrous salt by the action of HNO3 and N2O5. The hexahydrate melts at ~55o to give a red liquid which decomposes on further heating at 100-105o to form Co3O4.????? ?? ?? ? ???
???
?? ??
????? ?? ??
???( 386)?? ??
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