Sodium Carbonate Anhydrous Extra Pure

1. Basic Identification Attributes

• Chemical Name: Sodium Carbonate (Anhydrous)
  • CAS Number: 497-19-8
  • HS Code: 2836.20.00
  • Molecular Formula: Na₂CO₃
  • Synonyms:

• Soda ash
• Disodium carbonate
• Anhydrous soda
• Carbonic acid disodium salt

2. Physical & Chemical Properties

Physical State: White, granular or powdered solid
• Color & Odor: White, odorless
• Melting Point: ~851 °C
• Boiling Point: Decomposes before boiling
• Density/Specific Gravity: ~2.53 g/cm³
• Solubility:

• Soluble in water (~22 g/100 mL at 20 °C)
• Insoluble in alcohol
  • pH Level: Strongly alkaline (pH ~11.5 for 1% solution)
  • Vapor Pressure & Volatility: Not volatile
  • Flash Point: Not applicable
  • Autoignition Temperature: Not applicable
  • Viscosity: Not applicable

3. Safety & Hazard Attributes

Hazard Class (GHS Classification):

• Eye irritation (Category 2A)
• Skin irritation (Category 2)
  • NFPA Ratings:
• Health: 2
• Flammability: 0
• Reactivity: 0
  • Exposure Limits:
• No specific OSHA PEL or ACGIH TLV established
  • Reactivity:
• Stable under normal conditions
• Reacts with acids to produce CO₂ gas

4. Storage & Handling Attributes

Storage Conditions:

• Store in a dry, cool, well-ventilated area
• Keep containers tightly closed to avoid moisture uptake
  • Incompatible Materials:
• Acids (reacts to release CO₂)
• Moist air (hygroscopic)
  • Container Type:
• Polyethylene or sealed metal drums
  • Shelf Life & Expiration Date:
• Stable for several years under dry storage
  • Special Handling Requirements:
• Use gloves and goggles
• Avoid generating or inhaling dust

5. Regulatory & Compliance Attributes

Regulatory Status:

• Approved for use as a food additive (E500ii)
• Listed under REACH, OSHA, EPA, and FDA
  • Transportation Restrictions:
• Not classified as hazardous for transport
  • Waste Disposal Method:
• Dispose of in accordance with local environmental regulations
• Non-hazardous waste classification

6. Environmental & Health Impact

Ecotoxicity:

• Low toxicity to aquatic life
  • Persistence in Environment:
• Disperses readily in water and neutralizes to form natural carbonates
  • Carcinogenicity/Mutagenicity:
• Not classified as carcinogenic or mutagenic
  • Biodegradability:
• Inorganic; not biodegradable but environmentally benign