1. Basic Product Information
Product Name: Sodium Bicarbonate (Industry Grade)
CAS Number: 144-55-8
Molecular Formula: NaHCO3
Molecular Weight: 84.01
2. Physical and Chemical Properties
Physical Indicators
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Appearance: White fine crystalline powder
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Odor: Odorless, slight mild alkaline taste
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Solubility: Slightly soluble in water; insoluble in ethanol, organic solvents
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Melting Point: Decomposes above 50℃
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Boiling Point: Decomposes before boiling
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Density (20℃): 2.20 g/cm3
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pH Value (1% aqueous solution): 8.0–9.5
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Hygroscopicity: Slightly hygroscopic under high humidity environment
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Aqueous Stability: Aqueous solution weak alkaline; decomposes into sodium carbonate, carbon dioxide and water under heating; reacts with acid to generate CO? gas
Chemical Characteristics
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Molecular Structure: Ionic inorganic salt composed of sodium cation and bicarbonate anion
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Core Functional Mechanism: Mild industrial inorganic alkali, with acid neutralization and gas release properties; stable under normal temperature dry environment; thermal decomposition produces CO? for foaming applications; neutralizes acidic wastewater and acidic exhaust gas
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Photostability: Stable under light irradiation, no discoloration
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Thermal Stability: Gradually decomposes at temperature over 50℃; complete decomposition at 270℃ to form sodium carbonate
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Chemical Compatibility: Compatible with neutral inorganic salts; incompatible with strong acids, calcium/magnesium ions, strong alkaline substances
3. Main Usage
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Flue gas desulfurization and denitrification auxiliary agent for thermal power plants, steel factories and waste incineration plants
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Industrial wastewater pH regulator to neutralize acidic wastewater
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Industrial cleaning agent raw material for metal surface decontamination, textile printing and dyeing auxiliary
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Foaming agent for rubber, plastic and fire extinguishing raw materials
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Construction, leather tanning, mineral flotation industrial auxiliary additive
4. Quality Specification Table
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Test Item
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Standard Requirement
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CAS Number
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144-55-8
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Molecular Formula
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NaHCO3
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Appearance
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Uniform white fine powder without visible foreign impurities
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NaHCO3 Content
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≥98.5%
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Loss on Drying
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≤0.50%
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Chloride (Cl)
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≤0.10%
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Sulfate (SO42?)
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≤0.05%
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Heavy Metal (Pb)
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≤10 ppm
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Insoluble Matter
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≤0.08%
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Standard Storage Package
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25kg woven bag with inner plastic liner
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5. Storage Condition
Seal tightly, store in dry, cool and ventilated warehouse below 30℃; isolate from acid products and humid air.
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Transportation Note: Prevent rain and moisture during transit; avoid mixing with acid chemicals; stack away from direct sunlight
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Shelf Life: 24 months under intact sealed dry storage
6. Safety Warning
Mild irritant inorganic alkaline powder. Dust inhalation irritates throat and respiratory tract; long-term skin contact may cause dry skin and slight irritation; eye contact will trigger stinging discomfort. Thermal decomposition releases carbon dioxide.
Operate in well-ventilated workshop with dust mask, safety goggles and rubber gloves. Avoid mixing with strong acid to prevent violent foaming splashing. Waste materials can be neutralized with dilute acid before discharge according to local environmental regulations.
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