Product

Potassium bicarbonate

Potassium bicarbonate (also known as potassium hydrogen carbonate or potassium acid carbonate), is a colorless, odorless, slightly basic, salty substance. The compound is used as a source of carbon dioxide for leavening in baking, extinguishing fire in powder fire extinguishers, acting as a reagent, and a strong buffering agent in medications. The US Food and Drug Administration (FDA) recognizes potassium bicarbonate as “generally recognized as safe”. It is used as a base in foods to regulate pH.

Potassium bicarbonate is soluble in water, and is often found added to bottled water to affect taste; however, it is not soluble in alcohol. Decomposition of the substance occurs between 100°C and 120°C into K2CO3 (potassium carbonate), H2O (water), and CO2 (carbon dioxide). In concentrations greater than 0.5%, KHCO3 can have phytotoxic effects on plants (potassium bicarbonate has widespread use in crops, especially for neutralizing acidic soil), although there is no evidence of human carcinogenicity, no adverse effects of overexposure, and no LD50.

Physically, potassium bicarbonate occurs as a crystal or a soft white granular powder. It has a CAS No [298-14-6]. It is manufactured by reacting potassium carbonate with carbon dioxide and water:

K2CO3 + CO2 + H2O → 2 KHCO3

Potassium bicarbonate is used as a fire suppression agent (“BC powder”) in some dry powder fire extinguishers, as the principal component of the Purple-K powder.

Potassium bicarbonate is soluble in water, and is often found added to bottled water to affect taste; however, it is not soluble in alcohol. Decomposition of the substance occurs between 100°C and 120°C into K2CO3 (potassium carbonate), H2O (water), and CO2 (carbon dioxide). In concentrations greater than 0.5%, KHCO3 can have phytotoxic effects on plants (potassium bicarbonate has widespread use in crops, especially for neutralizing acidic soil), although there is no evidence of human carcinogenicity, no adverse effects of overexposure, and no LD50.

uses

Fire Extinguisher Ingredient

  • Dry powder fire extinguishers
  • Efficient fire extinguishing agent for Class B (flammableliquids and gases) and Class C  (electrical) type fires
  • Automatic release systems for fire prevention
  • Airfield, petrochemical, naval and other commercial applications
  • Scavenger of acidic fire by-products

Agriculture – Soils

  • The absorption of potassiumby soils is enhanced by thebicarbonate
  • Reduces the loss of cations inacidic or neutral soils andincreases the action of phosphatefertilizers
  • Corrects soil pH, reduces acidity
product identification
CAS 298-14-6
Toxicological Data
Potassium bicarbonate LD50: Not available. LC50: Not available.
Molecular formula KHCO3
Other names potassium acid carbonate
Physical and Chemical Properties
Physical state Solid.
Molecular Weight 100.12 g/mole
Melting Point Decomposes.
Specific Gravity 2.17 (Water = 1)
Dispersion Properties See solubility in water.
Solubility Soluble in cold water.
Physical and Chemical Properties
Physical state Solid.
Molecular Weight 100.12 g/mole
Melting Point Decomposes.
Specific Gravity 2.17 (Water = 1)
Dispersion Properties See solubility in water.
Solubility Soluble in cold water.