DISCRIPTION

Sodium Bicarbonate has a formula NaHCO₃. Molecular weight is 84.

APPLICATION

Sodium Bicarbonate is used primarily to remove calcium from muds with pH above 9.0, especially calcium contamination due to cement.

Ca(OH)₂ + NaHCO₃ -> CaCO₃ + H₂O + NaOH

Calcium contamination from anhydrate, CaSO₄ should be removed with Soda Ash if a simultaneous reduction in pH is not desirable.

RECOMMENDED TREATMENT

Pretreatment of cement contamination should be not more than 1.4 – 2.1 kg/m³ (0.5 – 0.75 lb/bbl) of Sodium Bicarbonate. Over-treatment can be as detrimental to fluids properties as cement contamination. It is therefore advisable to treat only soluble calcium ion on a circulation basis and treat lime particles (cement) that subsequently go into solution. Approximately 0.42 kg/m³ (0.147 lb/bbl) NaHCO₃ will remove 100 mg/l calcium originating from lime.

TYPICAL PHYSICAL PROPERTIES

Appearance                                                white powder

Specific gravity                                            2.16

pH (saturated solution @ 25⁰C)                   6.8

Solubility                                                  soluble in water

SAFE HANDLING RECOMMENDATIONS

Utilize normal precaution for employee protection when handling chemical products.

Use of appropriate respirator gloves, goggles and apron is recommended for employee comfort and protection.

SHIPPING

Sodium Bicarbonate does not have a restricted classification for transportation by the international or domestic regulatory agencies.

PACKING

Sodium Bicarbonate is packaged in 50 kg PE+PP sacks.