Potassium bicarbonate

  • Potassium hydrogen carbonate
  • Carbonix acid, monopotassium salt
Formula
KHCO3
Structure
Description
Clear to white, odorless, crystalline powder.
Uses
Substance is used in baking powders, effervescent salts.

Registry Numbers and Inventories.
CAS
298-14-6
EC (EINECS/ELINCS)
206-059-0
S 22 24/25
Merck
12,7770
Beilstein/Gmelin
4535309
EPA OPP
73508
Swiss Giftliste 1
G-7824
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CHKO3
Formula mass
100.12
Melting point, °C
292
Density
2.17 g/cm3
Solubility in water
Soluble

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Use with adequate ventilation. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acidic conditions, bases.
Decomposition
Carbon monoxide, carbon dioxide, oxides of carbon, oxides of potassium.

Fire.
Autoignition, °C
None
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
5
Exposure effects
May cause irritation to the eyes, skin and digestive tract.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2836 40 00