无水溴化钴(II)

Description

Cobalt(II)bromide anhydrous · CAS 7789-43-7 · Br2Co. UNII 7M7RX75BAL. Melting Point: 678 °C; Density: 4.909 at 25 °C/4 °C; Density: 4.91 @25 °C.

Identification

CAS Registry Number	7789-43-7
PubChem CID	24610
Molecular formula	Br2Co
IUPAC name	dibromocobalt
UNII (FDA)	7M7RX75BAL

Computed Descriptors

Molecular Weight	218.74
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	218.76782
Monoisotopic Mass	216.76987
Topological Polar Surface Area	0
Heavy Atom Count	3
Formal Charge	0
Complexity	2.8

Physical & Chemical Properties

Melting Point	678 °C
Density	4.909 at 25 °C/4 °C
Density	4.91 @25 °C
Formulations/Preparations	-80 mesh, 99.9% purity grade

Physical description & handling notes

• Cobaltous bromide is a red violet crystalline solid. It is soluble in water. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. It is used as a catalyst in the production of other chemicals.
• Bright green solid; Hygroscopic; Soluble in water; [Merck Index] Green beads; Soluble in water; [MSDSonline]
• Bright green solid or lustrous green crystalline leaflets
• Green hexagonal crystals; hygroscopic
• Loses 4 H2O at 212 °F. and all H2O at 266 °F. (USCG, 1999)
• 1252.4 °F For anhydrate; 117.5 °F for hexahydrate. (USCG, 1999)

GHS Hazard Classification

Reported hazard statements	H302, H312, H332 (33%), H315 (84%), H317 (94.7%), H319 (86.2%), H334 (94.7%), H335 (79.8%)

Documented Uses

• Used in hygrometers and as a catalysts for organic reactions; [Merck Index]
• Chiefly in hygrometers; also in catalysts for organic reactions.
• Cobalt(II) bromide may be used as a catalyst in the oxidation of some organic compounds with cobalt(III). (L488)
• By the action of bromine on cobalt or of hydrobromic acid on cobaltous hydroxide or carbonate followed by crystallization.
• Bromides are rapidly absorbed from small or large intestine. ...bromide accumulates in all tissues and is excreted by urine, sweat, tears, nasal excretions .... /bromides/

Synonyms

Cobalt(II) bromide; 7789-43-7; Dibromocobalt; Cobalt bromide (CoBr2); 7M7RX75BAL; Cobaltum Bromatum; RefChem:58135; DTXCID101324199; 232-166-7; 678-761-9; cobalt bromide hexahydrate; Cobalt dibromide; Cobaltous bromide; DTXSID50894158; Cobalt bromide; Cobalt(II) bromide, anhydrous

Frequently Asked Questions

What are the CAS number and molecular formula of Cobalt(II)bromide anhydrous?

CAS 7789-43-7; molecular formula Br2Co; molecular weight — g/mol.

What other names is Cobalt(II)bromide anhydrous known by?

Cobalt(II) bromide, 7789-43-7, Dibromocobalt, Cobalt bromide (CoBr2), 7M7RX75BAL, Cobaltum Bromatum.

Is Cobalt(II)bromide anhydrous classified as hazardous?

Hazard statements reported: H302, H312, H332, H315, H317.

What are the key physical properties of Cobalt(II)bromide anhydrous?

Melting Point: 678 °C; Density: 4.909 at 25 °C/4 °C; Density: 4.91 @25 °C; Formulations/Preparations: -80 mesh, 99.9% purity grade.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.