Sodium Hydrogen Carbonate Extra Pure

1. Basic Identification Attributes

• Chemical Name: Sodium Hydrogen Carbonate
  • CAS Number: 144-55-8
  • HS Code: 2836.20.00
  • Molecular Formula: NaHCO₃
  • Synonyms:

• Baking soda
• Sodium bicarbonate
• Bicarbonate of soda

2. Physical & Chemical Properties

Physical State: Solid (fine powder or crystalline)
• Color & Odor: White, odorless
• Melting Point: Decomposes at about 270 °C releasing CO₂
• Density: Approximately 2.20 g/cm³
• Solubility:

• Soluble in water (~96 g/L at 20 °C)
• Insoluble in ethanol
  • pH Level: Mildly alkaline (pH ~8.3 in aqueous solution)
  • Vapor Pressure: Negligible
  • Flash Point: Not applicable (non-flammable)

3. Safety & Hazard Attributes

Hazard Class (GHS Classification):

• Generally regarded as safe; may cause mild irritation if inhaled in large amounts
  • NFPA Ratings:
• Health: 1
• Flammability: 0
• Reactivity: 0
  • Exposure Limits:
• No specific OSHA PEL or ACGIH TLV established
  • Reactivity:
• Stable under normal conditions
• Decomposes on heating releasing CO₂

4. Storage & Handling Attributes

Storage Conditions:

• Store in a dry, cool, well-ventilated place
• Keep container tightly closed to prevent moisture absorption
  • Incompatible Materials:
• Strong acids (react to release CO₂)
• Moisture (causes clumping)
  • Container Type:
• Plastic or sealed metal containers
  • Shelf Life:
• Stable for several years if kept dry
  • Special Handling Requirements:
• Avoid dust formation
• Use protective gloves and eye protection when handling large quantities

5. Regulatory & Compliance Attributes

Regulatory Status:

• Approved food additive (E500)
• Listed under REACH, FDA, and EPA regulations
  • Transportation Restrictions:
• Not classified as hazardous for transport
  • Waste Disposal Method:
• Dispose according to local regulations; non-hazardous waste

6. Environmental & Health Impact

Ecotoxicity:

• Low toxicity to aquatic organisms
  • Persistence in Environment:
• Readily dissolves and neutralizes acidic components in water
  • Carcinogenicity/Mutagenicity:
• Not classified as carcinogenic or mutagenic
  • Biodegradability:
• Inorganic; not biodegradable but environmentally benign