Sodium bicarbonate

From NOWA-CL
Jump to navigation Jump to search
 
Sodium bicarbonate
Chemical formula NaHCO3
OTP appearance white solid 
Molar Mass(g/mol) 84.007 
Density(g/cc) 2.2 
Index of refraction 1.583 
Solubility in water(g/L) 96
NFPA 704
NFPA704.png
0
0
1
 

 

Thermal Decomposition
Sodium bicarbonate
50°C
sodium carbonate

Uses

Primary

  • WHO LEM

Other

  • Cooking: Leavening agent
  • Cleaning agent
  • Pharma: Cardiac/blood acidity treatment (IV, oral)
  • Pharma: antacid
  • Chemistry: buffer solutions

Natural occurrence

  • Sodium bicarbonate occurs naturally as the mineral nahcolite.

Hazards

  • LD50 (rat, oral) 4.2g/kg
  • Eye irritant

Production

Extraction

Synthesis

Carbon dioxide

Partial solvay

  • Combine ammonium bicarbonate with sodium chloride, precipitating sodium bicarbonate
    NaCl(aq) + NH4HCO3
    {
    cold}
    NH4Cl(aq) + NaHCO3(s)

Purification

Testing

Storage

Dry storage, below 50°C if possible. At 200°C decomp to sodium carbonate is rapid.

Disposal

  • GRAS

See Also

References