Sodium Carbonate Anhydrous Extra Pure

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Sodium Carbonate Anhydrous Extra Pure is a high-purity, white crystalline or powdery inorganic salt known for its strong alkalinity and water solubility. Commonly referred to as soda ash, it is widely used in laboratory analysis, pH regulation, chemical synthesis, glass manufacturing, and as a food additive (E500ii). Its consistent quality and chemical stability make it suitable for high-precision applications in research, industry, and regulated production environments. It must be stored in a dry, sealed container to prevent moisture absorption and degradation.

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Categories: Analytical Reagents, Biochemical Reagents, LABORATORY CHEMICALS Tags: AlkalineBuffer, AnalyticalReagent, E500ii, ExtraPure, HighPurity, LaboratoryChemical, Na2CO3, SodaAsh, SodiumCarbonate

Description

Table of Contents

Sodium Carbonate Anhydrous Extra Pure

PRIMARY USES

Analytical Reagent & Laboratory Applications:
• Used as a primary standard in acid-base titrations
• Acts as a buffering agent in analytical chemistry and sample preparation
• Utilized in qualitative and quantitative analysis for carbonate and bicarbonate detection

Glass & Ceramics Manufacturing:
• Essential fluxing agent in glass and ceramic production
• Lowers the melting point of silica, improving manufacturability and durability of glass
• Used in enamel and frit formulations for better fusion

Pharmaceutical & Cosmetic Industry:
• Functions as a pH adjuster in pharmaceutical formulations
• Used in skin-care products and toothpaste for its alkalinity and mild cleansing effect

SECONDARY USES

Food Industry (regulated quantities):
• Employed as a food additive (E500ii) for pH regulation and leavening in bakery products
• Used in cocoa processing and ramen noodle production to modify texture and flavor

Chemical Manufacturing:
• Intermediate in the production of sodium compounds such as sodium silicates and phosphates
• Used in detergent production as a water softener and alkaline builder

Water Treatment:
• Helps adjust pH in water treatment systems
• Precipitates hardness ions to improve water quality

Textile & Dyeing Industry:
• Used to fix reactive dyes onto cotton fibers
• Acts as a cleansing and neutralizing agent during textile processing

PRODUCT KEY FEATURES

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

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

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

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

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

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

SAFETY HANDLING PRECAUTIONS

SAFETY PRECAUTIONS

Personal Protective Equipment (PPE):
• Wear chemical-resistant gloves (e.g., nitrile)
• Use safety goggles or face protection
• Wear a lab coat or protective clothing
• Use dust mask or respirator if dust is generated

Handling:
• Handle in a well-ventilated area
• Avoid breathing dust
• Prevent contact with eyes, skin, and clothing
• Wash hands after handling

Storage:
• Keep container tightly closed and stored in a dry area
• Protect from moisture and incompatible materials like acids

FIRST AID MEASURES

Inhalation:
• Move person to fresh air
• Seek medical attention if respiratory symptoms develop

Skin Contact:
• Wash thoroughly with soap and water
• Remove contaminated clothing
• Seek medical advice if irritation occurs

Eye Contact:
• Rinse eyes with plenty of water for at least 15 minutes
• Hold eyelids open during rinsing
• Seek medical attention if irritation persists

Ingestion:
• Rinse mouth with water
• Do not induce vomiting
• Seek medical attention if symptoms appear

FIRE FIGHTING MEASURES

Flammability:
• Non-flammable

Extinguishing Media:
• Use any media suitable for surrounding fire (water spray, foam, CO₂, dry chemical)

Hazardous Combustion Products:
• May release sodium oxide fumes when heated to decomposition

Firefighter Protection:
• Wear full protective gear and self-contained breathing apparatus (SCBA)