Potassium Hydrogen Carbonate Extra Pure

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Potassium Hydrogen Carbonate Extra Pure, also known as potassium bicarbonate, is a fine white crystalline powder with excellent purity and stability. It is commonly used in laboratories as a buffering agent due to its mild alkalinity. In food processing, it functions as a leavening agent and pH regulator, and in agriculture, it is applied as a fungicide and a source of potassium. Its high solubility in water and non-toxic nature make it a versatile and safe compound for a range of analytical and technical applications. Proper storage in tightly sealed containers, away from moisture and acids, ensures optimal shelf life and performance.

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Categories: Analytical Reagents, Inorganic and Organic Standards Tags: AnalyticalReagent, BicarbonateOfPotash, BufferingAgent, HighPurity, InorganicStandard, KHCO3, LaboratoryChemicals, MildAlkaline, phcontrol, PotassiumHydrogenCarbonate

Description

Potassium Hydrogen Carbonate Extra Pure

PRIMARY USES

Food Industry (E501):
- Used as a leavening agent in baking powders, where it releases carbon dioxide to help dough rise.
- Acts as a buffering agent to control pH in various food products.
Fire Extinguishers:
- Commonly used in dry chemical fire extinguishers (especially Purple-K) for Class B and C fires (flammable liquids and electrical equipment).
Agriculture & Horticulture:
- Serves as a potassium source in fertilizers to improve plant health.
- Used as a fungicide for controlling powdery mildew and other fungal infections on crops.
Laboratory Applications:
- Functions as a mild base or buffering agent in chemical experiments and titrations.
- Used to prepare standard solutions and for pH control.

SECONDARY USES

Pharmaceutical Industry:
- Used in antacid formulations to neutralize stomach acid.
- Sometimes found in electrolyte replacement therapies.
Water Treatment:
- Helps adjust pH in water systems and aquatic environments.
Beverage Industry:
- Occasionally used to regulate acidity in certain beverages, particularly sparkling drinks.

PRODUCT KEY FEATURES

1. Basic Identification Attributes

Chemical Name: Potassium Hydrogen Carbonate
CAS Number: 298-14-6
HS Code: 2836.40.00
Molecular Formula: KHCO₃
Synonyms:
- Potassium bicarbonate
- Monopotassium carbonate
- Acid potassium carbonate
- Potassium acid carbonate

2. Physical & Chemical Properties

Physical State: Solid (crystalline powder or granules)
Color & Odor: White, odorless
Boiling Point & Melting Point:
- Decomposes on heating (>100 °C); no true boiling point
- Melting Point: Decomposes before melting (releases CO₂)
Density/Specific Gravity: ~2.17 g/cm³
Solubility:
- Soluble in water (~22 g/100 mL at 20 °C)
- Insoluble in alcohol
pH Level: ~8.3 (1% aqueous solution)
Vapor Pressure & Volatility: Non-volatile
Flash Point: Not flammable
Autoignition Temperature: Not applicable
Viscosity: Not applicable (solid)

3. Safety & Hazard Attributes

Hazard Class (GHS Classification):
- Not classified as hazardous
- Generally considered safe under normal handling
NFPA Ratings:
- Health: 1
- Flammability: 0
- Reactivity: 0
Exposure Limits:
- No OSHA PEL or ACGIH TLV assigned
Reactivity:
- Stable under normal conditions
- Decomposes under heat to form potassium carbonate, water, and carbon dioxide

4. Storage & Handling Attributes

Storage Conditions:
- Store in a dry, cool place
- Keep containers tightly closed
Incompatible Materials:
- Acids (release CO₂)
- Strong oxidizers
Container Type:
- Plastic or glass containers
Shelf Life & Expiration Date:
- Stable for years under dry storage conditions
Special Handling Requirements:
- Minimal PPE; use gloves and eye protection if handling large quantities

5. Regulatory & Compliance Attributes

Regulatory Status:
- GRAS (Generally Recognized As Safe) by FDA
- Listed in TSCA and REACH
- Used as a food additive (E501(ii))
Hazard Symbols (GHS Pictograms):
- None required
Transportation Restrictions:
- Not regulated for transport
Waste Disposal Method:
- Dispose of in accordance with local and national regulations
- Can be diluted and washed into wastewater systems

6. Environmental & Health Impact

Ecotoxicity:
- Low toxicity to aquatic organisms
Persistence in Environment:
- Breaks down into naturally occurring ions
Carcinogenicity/Mutagenicity:
- Not classified as carcinogenic or mutagenic
Biodegradability:
- Inorganic compound; not biodegradable but environmentally benign

SAFETY HANDLING PRECAUTIONS

SAFETY PRECAUTIONS

Personal Protective Equipment (PPE):

Safety goggles or face shield
Lab coat and chemical-resistant gloves (e.g., nitrile)
Dust mask or respirator in case of powder handling
Closed-toe shoes in laboratory settings

Handling:

Avoid generating dust; use it with adequate ventilation.
Do not inhale dust or ingest the substance.
Handle with clean, dry equipment.
Wash hands thoroughly after handling.

Storage:

Store in a tightly sealed container in a cool, dry, well-ventilated area.
Keep away from acids and moisture.
Store separately from incompatible materials such as strong acids.

FIRST AID MEASURES

Inhalation:

Move people to fresh air.
Seek medical attention if breathing becomes difficult or irritation occurs.

Skin Contact:

Wash thoroughly with soap and water.
Remove contaminated clothing.
Seek medical help if irritation persists.

Eye Contact:

Rinse immediately with plenty of water for at least 15 minutes.
Remove contact lenses if present and easy to do.
Get medical attention if discomfort continues.

Ingestion:

Rinse mouth with water.
Do not induce vomiting.
Seek medical advice, especially if large amounts are ingested.

FIRE FIGHTING MEASURES

Flammability:

Non-flammable and not combustible.

Extinguishing Media:

Use media suitable for surrounding fire (water spray, dry chemical, CO₂, or foam).

Hazardous Combustion Products:

May release carbon dioxide (CO₂) and potassium oxides upon thermal decomposition.

Firefighter Protection:

Wear full protective clothing and self-contained breathing apparatus (SCBA).
Avoid inhaling decomposition products.