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HomeProduct name listHEXAAMMINECOBALT(III) CHLORIDE

HEXAAMMINECOBALT(III) CHLORIDE

Synonym(s):Cobalt hexammine trichloride;Hexaamminecobalt trichloride

  • CAS NO.:10534-89-1
  • Empirical Formula: Cl3CoH18N6
  • Molecular Weight: 267.48
  • MDL number: MFCD00036304
  • EINECS: 234-103-9
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2023-04-23 13:52:06
HEXAAMMINECOBALT(III) CHLORIDE Structural

What is HEXAAMMINECOBALT(III) CHLORIDE?

Chemical properties

solid

The Uses of HEXAAMMINECOBALT(III) CHLORIDE

Hexaamminecobalt(III) chloride is a component of structural biology methods, especially for DNA or RNA, where the positive ions stabilize the tertiary structure of the phosphate backbone, which favors to solve their structure by X-ray crystallography. It serves as an excellent antibacterial and antiviral property.

The Uses of HEXAAMMINECOBALT(III) CHLORIDE

As reagent for pyrophosphoric acid, for the estimation of phosphate.

Preparation

Synthesis of hexaamminecobalt(III) chloride
2CoCl2+10NH3+2NH4Cl+H2O2 →2[Co(NH3) 6]Cl3+2H2O
Reaction. Dissolve 2.5 g (10.5 mmol) of cobalt(II) chloride hexahydrate and 1.7 g (32 mmol) of ammonium chloride (about 195% excess) in 15 mL of distilled water. Add 0.5 g of activated charcoal and 23 mL (380 mmol) of concentrated aqueous ammonia (about 624% excess). Cool the reaction mixture to 0 oC in an ice bath. Slowly add 2 mL (19.5 mmol) of 30% hydrogen peroxide (about 271% excess), with stirring – maintain the temperature below 10°C. After the hydrogen peroxide has been added, heat the reaction mixture to 60°C for about 30 minutes. Cool the reaction mixture to 0 oC to cause precipitation of the product.

General Description

Hexammine cobalt(III) is considered an analog of fully solvated magnesium, capable of activating some enzymes that requires magnesium. It is useful in DNA condensation studies.

Purification Methods

It crystallises from warm water (8mL/g) on cooling. [Bjerrum & McReynolds Inorg Synth II 217 1946.]

Properties of HEXAAMMINECOBALT(III) CHLORIDE

Melting point: 217 °C(lit.)
Density  1.71 g/mL at 25 °C(lit.)
storage temp.  room temp
solubility  Soluble in ammonia.
form  Powder
color  Orange to orange-brown
Specific Gravity 1.71
Water Solubility  Soluble in ammonia and water.
Merck  14,4675
Exposure limits ACGIH: TWA 0.02 mg/m3
Stability: Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference 10534-89-1(CAS DataBase Reference)
EPA Substance Registry System Cobalt(3+), hexaammine-, trichloride, (OC-6-11)- (10534-89-1)

Safety information for HEXAAMMINECOBALT(III) CHLORIDE

Signal word Danger
Pictogram(s)
ghs
Health Hazard
GHS08
GHS Hazard Statements H317:Sensitisation, Skin
H334:Sensitisation, respiratory
H351:Carcinogenicity
H413:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes P201:Obtain special instructions before use.
P273:Avoid release to the environment.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.
P308+P313:IF exposed or concerned: Get medical advice/attention.

Computed Descriptors for HEXAAMMINECOBALT(III) CHLORIDE

InChIKey JXBGZYGSWFSYFI-UHFFFAOYSA-K

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