Chemistry Individual Project Work - CaBr2

Candy Tsang F.3C (29)

The ionic compound

Name: Calcium bromideFormula: CaBr2 Electronic diagram:

Physical properties

Features:1) State: solid 2) Appearance: white crystal

powder 3) Purity: 95% min.4) Melting point: 730°C &Boiling

point: 806°C 5) Density: 3380 kg m-3 6) Molar mass of CaBr2 = 199.886

g/mol 7) Solubility in organics = insoluble

Chemical Properties1) PH value: 7-9

2) Toxicity: Oral rat LD50: 4100mg/kg

3) When strongly heated in air, calcium bromide will produce calcium oxide and bromine.

• 2 CaBr2 + O2 → 2 CaO + 2 Br2

• In this reaction the oxygen oxidizes the bromide to bromine.

Others

Uses:• Mainly applied in ocean oil wells as completio

n fluid, stationary liquid and workover fluid

Can be found in:• drilling fluids, neuroses medication, freezing

mixtures, food preservatives, photography and fire retardants

Prices:• $138 for 500g

Resources

• http://en.wikipedia.org/wiki/Calcium_bromide

• http://chemideal.en.alibaba.com/product/321892165-210230229/Calcium_Bromide_Liquid.html

• http://www.calciumbromide.net/• http://www.chemicalbook.com/ChemicalPr

oductProperty_EN_CB3210471.htm• http://www.google.com.hk/