Cobalt chloride (CoCl2)

Base Information

• Chemical Name: Cobalt chloride (CoCl2)
• CAS No.: 7646-79-9
• Molecular Formula: Cl2Co
• Molecular Weight: 129.899
• Hs Code.: 28273930
• ICSC Number: 0783
• NSC Number: 51149
• Wikipedia: Cobalt(II) chloride
• Wikidata: Q407849
• Mol file: 7646-79-9.mol

Synonyms:cobalt chloride;cobalt dichloride;cobalt(II)chloride;cobaltous chloride;CoCl(2)

Chemical Property of Cobalt chloride (CoCl2)

Chemical Property:

• Appearance/Colour: Blue crystalline powder
• Vapor Pressure: 40 mm Hg ( 0 °C)
• Melting Point: 724 °C(lit.)
• Boiling Point: 1049 °C
• Flash Point: 500 °C
• PSA: 0.00000
• Density: 3.35 g/cm³
• LogP: 1.37900
• Storage Temp.: 2-8°C
• Sensitive.: Hygroscopic
• Solubility.: 585.9g/l soluble
• Water Solubility.: soluble
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 128.870899
• Heavy Atom Count: 3
• Complexity: 2.8

Purity/Quality:

99% ^*data from raw suppliers

Cobalt(II) chloride ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T, N
• Hazard Codes: T,N
• Statements: 49-42/43-52/53-50/53-22-68-41-60-51/53
• Safety Statements: 53-23-36/37-45-60-61-22-39-26

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: Cl[Co]Cl
• Inhalation Risk: A harmful concentration of airborne particles can be reached quickly when dispersed.
• Effects of Short Term Exposure: The substance is irritating to the eyes.
• Effects of Long Term Exposure: Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma. Ingestion may cause effects on the heart, bone marrow and thyroid. This substance is possibly carcinogenic to humans. Animal tests show that this substance possibly causes toxic effects upon human reproduction.
• Uses: Cobalt(II) chloride has several applications. It is used in hygrometers; as a humidity indicator; as a temperature indicator in grinding; as a foam stabilizer in beer; in invisible ink; for painting on glass; in electroplating; and a catalyst in Grignard reactions, promoting coupling with an organic halide. It also is used to prepare several other cobalt salts; and in the manufacture of synthetic vitamin B12. The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties. Cobalt(II) chloride is used in humidity indicator in weather instruments. In the anhydrous form, it finds use in electroplating of cobalt, in organic chemistry and is a precursor to cobaltocene, (bis(cyclopentadienyl)cobalt(II), which is a good reducing agent. It also serves as a Lewis acid. Cobalt chloride is an indicator for water in desiccants, owing to the reversible hydration/dehydration coupled with distinct color change. Cobalt chloride is useful for producing invisible ink as it turns blue when heated and becomes invisible once it gets cooled. Cobalt(II) chloride catalyzes cross coupling of aryl halides or vinyl halides with aryl grignard reagents in excellent yields. Cobalt chloride (CoCl2) is used to manufacture vitamin B12, even though the compound itself can cause damage to red blood cells. It is also used as a dye mordant (to fix the dye to the textile so that it will not run). It is also of use in manufacturing solid lubricants, as an additive to fertilizers, as a chemical reagent in laboratories, and as an absorbent in gas masks, electroplating, and the manufacture of vitamin B12. Absorbent for ammonia, gas masks, electroplating, sympathetic inks, hygrometers, manufacture of vitamin B 12, flux for magnesium refining, solid lubricant, dye mordant, catalyst, barometers, laboratory reagent, fertilizer additive.
• Description: blue crystals (anhydrous) violet-blue (dihydrate) rose red crystals (hexahydrate) Sinks and mixes with water. Pale blue leaflets, turns pink upon exposure to moist air.
• Physical properties: Blue leaflets; turns pink in moist air; hygroscopic; the dihydrate is violet blue crystal; the hexahydrate is pink monoclinic crystal; density 3.36, 2.48 and 1.92 g/cm3 for anhydrous salt, dihydrate and hexahydrate, respectively; anhydrous salt melts at 740°C and vaporizes at 1,049°C; vapor pressure 60 torr at 801°C; the hexahydrate decomposes at 87°C; the anhydrous salt and the hydrates are all soluble in water, ethanol, acetone, and ether; the solubility of hydrates in water is greater than the anhydrous salt.

Technology Process of Cobalt chloride (CoCl2)

There total 181 articles about Cobalt chloride (CoCl2) which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 18.0%

cobalt(II) fuoride + Benzotrichlorid (98-07-7) → cobalt(II) chloride (7646-79-9,14543-09-0,16413-89-1)

Guidance literature:

In neat (no solvent); byproducts: benzotrifluoride; benzotrichloride is diluted with N2-vapor, 225°C;;

DOI:10.1021/ja01175a021

Reference yield:

cobalt(II) oxide (1307-96-6) + phosphorus pentachloride (10026-13-8,874483-75-7) → cobalt(II) chloride (7646-79-9,14543-09-0,16413-89-1) + trichlorophosphate (10025-87-3,12599-09-6,63736-95-8,39380-77-3)

Guidance literature:

CoO glows in PCl5-stream on heating;;

Reference yield:

cobalt phosphide + chlorine (7782-50-5) → phosphorus pentachloride (10026-13-8,874483-75-7) + cobalt(II) chloride (7646-79-9,14543-09-0,16413-89-1)

Guidance literature:

at light warming of Co3P2 in a chlorine stream formation of PCl5 and CoCl2 under fire phenomenon;;

upstream raw materials:

cobalt

cobalt(II) carbonate

tetrabutyl-ammonium chloride

chlorine

Downstream raw materials:

[2,6-diacetylpyridinebis(2-chloro-6-methylphenylimine)]cobalt[II]dichloride

[2,6-diacetylpyridinebis(2-biphenylimine)] cobalt[II]dichloride

[2,6-pyridinedicarboxaldehydebis (2,6-diisopropylphenylimine)]cobalt[II]dichloride

2,6-bis[1-(2-tertbutylphenylimino)ethyl]pyridine cobalt(II) dichloride

Refernces

• 1、 Sünkel, Karlheinz,Reimann, Dietmar,Nimax, Patrick. "Synthesis, molecular, and crystal structures of 3d transition metal cyanocyclopentadienides [M(MeOH)n(H2O)4-n{C5(CN)4X}2] (M=Mn, Fe, Co, Ni, Cu, Zn; X=H, CN, NH2, NO . p. 109 - 118. Retrieved 2018/12/11.
• 2、 Gao, Yafei,Li, Guangyu,Deng, Liang. "Bis(dinitrogen)cobalt(-1) Complexes with NHC Ligation: Synthesis, Characterization, and Their Dinitrogen Functionalization Reactions Affording Side-on Bound Diazene Complexes". . p. 2239 - 2250. Retrieved 2018/02/19.