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Send EmailSodium Gluconate, Monosodium Gluconate, Sodium D-Gluconate, E576, 527-07-1
Product Name: Sodium Gluconate
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY
| Property | Description |
|---|---|
| Chemical Name (IUPAC) | D-Gluconic Acid Monosodium Salt |
| Molecular Formula | C₆H₁₁NaO₇ |
| Molecular Weight | 218.14 g/mol |
| CAS Number | 527-07-1 |
| EINECS Number | 208-407-7 |
| Synonyms | Monosodium D-Gluconate, D-Gluconate Sodium Salt |
| Product Type | Organic Sodium Salt / Chelating Agent |
2. TYPICAL PHYSICAL AND CHEMICAL PROPERTIES
| Parameter | Specification / Typical Value |
|---|---|
| Physical Appearance | White crystalline powder or free-flowing granules |
| Odor | Odorless |
| Molecular Weight | 218.14 g/mol |
| Density | ~1.80 g/cm³ (at 20°C) |
| Melting Point | 175 - 180 °C (Decomposition begins) |
| Boiling Point | Not applicable (Decomposes upon heating) |
| Solubility (Water, 25°C) | 59 g / 100 ml water (Freely soluble) |
| Solubility (Ethanol) | Slightly soluble |
| pH (10% Aqueous Solution) | 6.5 - 7.5 |
| Biodegradability | Readily biodegradable (>98%, OECD 301E) |
3. CHEMICAL ANALYSIS SPECIFICATIONS (Typical Industrial & Food Grade)
| Analytical Parameter | Standard Value | Unit |
|---|---|---|
| Purity (Dry Basis) | ≥ 98.0 - 99.5 | % |
| Loss on Drying | ≤ 1.0 | % |
| Reducing Sugars (as Glucose) | ≤ 1.0 | % |
| Chloride (Cl) | ≤ 0.05 | % |
| Sulfate (SO₄) | ≤ 0.05 | % |
| Lead (Pb) | ≤ 2.0 | ppm |
| Arsenic (As) | ≤ 1.0 | ppm |
| Heavy Metals (as Pb) | ≤ 10 | ppm |
4. PRODUCTION METHOD SUMMARY
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Chemical Synthesis: Gluconic Acid solution is obtained by reacting Calcium Gluconate with Sulfuric Acid. It is subsequently neutralized with Sodium Carbonate (Na₂CO₃), filtered, and dried in a spray dryer.
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Biotechnological Method: Produced via controlled fermentation of Glucose (Corn sugar) using specific bacterial or fungal strains (Aspergillus niger).
5. KEY FUNCTIONAL PROPERTIES AND APPLICATIONS
| Sector / Application | Function |
|---|---|
| Construction & Building Chemicals | Set Retarder: Extends the workability time of concrete and mortar. Water Reducer: Acts as a dispersant in high-performance concrete admixtures. Note: It is an economical alternative to Lithium-based chemicals. |
| Industrial Water Treatment | Chelating Agent & Corrosion Inhibitor: Binds Calcium, Magnesium, and Iron ions in closed-loop cooling systems, preventing scale formation and corrosion. It is a more stable and biodegradable alternative to EDTA in highly alkaline environments. |
| Metal Surface Treatment & Cleaning | Alkaline Cleaner: Used in bottle washing and metal cleaning baths with caustic soda. Prevents re-deposition of soils by chelating ions released from the metal surface. Electroplating: Bath stabilizer. |
| Food Additive (E576) | Synergist & Bitterness Masking: Suppresses the metallic aftertaste of sweeteners (such as Stevia). Stabilizer: Used in dairy products and confectionery. |
| Textile and Printing | Color Developer & Masking Agent: Removes water hardness in dye baths, ensuring brighter and more homogeneous colors. |
6. SAFETY AND HANDLING INFORMATION (SUMMARY)
| Heading | Description |
|---|---|
| Classification (EC 1272/2008) | Not classified as a hazardous substance according to current regulations. |
| Hazard Statements | None (No H-Phrases). |
| First Aid Measures | In case of eye contact, rinse thoroughly with plenty of water. In case of skin contact, wash with soap and water. |
| Storage Conditions | Store in a cool, dry, and well-ventilated place. Keep away from moisture and direct sunlight. Keep container tightly closed. |
7. PACKAGING AND SHELF LIFE
| Parameter | Detail |
|---|---|
| Standard Packaging | 25 kg Kraft paper bag (PE liner inside) or 1000 kg Big Bag |
| Shelf Life | 24 months in original sealed packaging under proper storage conditions. |
| After Opening | Close the packaging tightly after use to protect from moisture. |
Disclaimer: The information provided in this document is based on our current state of knowledge and is given in good faith. It does not constitute an absolute guarantee regarding the suitability of the product for the stated application areas. The user is responsible for testing the product's suitability for their specific process.
SECTORAL APPLICATIONS AND USAGE RATES
Sodium Gluconate is utilized across various industries with specific dosage rates depending on the application. Below is a detailed breakdown:
1. Construction and Building Chemicals
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Application: Concrete Admixture (Set Retarder and Water Reducer)
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Typical Dosage Rate: 0.05% - 0.30% by weight of total cementitious material.
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Details: For extending setting time during hot weather or long hauls, a dosage of 0.15% - 0.30% is preferred. Lower dosages (approx. 0.05%) primarily function as a plasticizer/water reducer.
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Alternatives: Sodium Citrate, Sodium Glucoheptonate, Lignosulfonates, Phosphonates (ATMP, HEDP).
2. Industrial Cleaning and Metal Surface Treatment
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Application: Alkaline Cleaners (Bottle Washing, Metal Parts Cleaning)
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Usage Method: Added to solutions containing Caustic Soda (NaOH).
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Typical Dosage Rate:
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Light Soils / Hard Water: 2% - 5% (of total solution volume)
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Heavy Soils / Descaling Formulations: 5% - 10%
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Brewery and Beverage Bottle Washing (High Water Hardness): 10% - 12%
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Alternatives: EDTA (Ethylenediaminetetraacetic Acid), NTA (Nitrilotriacetic Acid), Sodium Tripolyphosphate (STPP), Sodium Glucoheptonate.
3. Food Industry (Additive E576)
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Application: Bitterness Masking Agent and Stabilizer.
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Typical Dosage Rate:
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Bitterness Masking (with sweeteners like Stevia): 1% - 3% of the sweetener weight.
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Dairy Products/Cheese: 0.1% - 0.5% of total mass for process water hardness control.
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Confectionery/Gels: 0.2% - 1% as a stabilizer.
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Alternatives: Potassium Citrate, Sodium Lactate.
4. Textile and Printing Industry
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Application: Water Hardness Sequestrant (Masking Agent) in Dye Baths.
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Typical Dosage Rate: 0.5 - 2.0 g/L based on dye bath volume.
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Details: Prevents metal ions in hard water from reacting with reactive dyes, which would otherwise cause color deviations and dullness.
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Alternatives: Polyacrylates, EDTA, Sodium Hexametaphosphate.
5. Industrial Water Treatment (Cooling Towers & Closed Loops)
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Application: Corrosion Inhibitor and Scale Preventer.
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Typical Dosage Rate: 10 - 50 ppm (mg/L) in circulating water.
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Details: Highly effective in preventing iron and copper corrosion in closed-loop systems, especially in high alkalinity environments.
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Alternatives: Molybdates, Zinc Salts, Phosphonates (PBTC), Polycarboxylates.
OTHER NAMES (Comprehensive List)
Sodium Gluconate is known by the following names depending on the industry and literature:
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Common Chemical Name: Sodium Gluconate
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Systematic IUPAC Name: Sodium (2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanoate
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Trade/Synonymous Names:
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Monosodium Gluconate
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D-Gluconic Acid, Sodium Salt
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Sodium D-Gluconate
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Food Additive Code (EU): E576
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Pharmacopeial Name (USP): Sodium Gluconate, Monosodium Gluconate
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CAS Registry Name: D-Gluconic acid, monosodium salt
MAJOR ALTERNATIVE CHEMICALS
The following chemicals are sometimes considered alternatives. However, Sodium Gluconate is often preferred due to its exceptional stability in highly alkaline environments and its complete biodegradability.
| Alternative Chemical | Strengths | Weaknesses Compared to Sodium Gluconate |
|---|---|---|
| EDTA (Ethylenediaminetetraacetic Acid) | Very strong chelation, low dosage. | Not readily biodegradable (environmental persistence), efficiency drops at high alkaline pH. |
| Sodium Glucoheptonate | Stronger chelation power than Gluconate. | Significantly higher cost. |
| Sodium Citrate | Widely available in food grade, economical. | Lower chelating capacity in highly alkaline solutions. |
| Sodium Tripolyphosphate (STPP) | Effective detergent builder. | Phosphate content poses eutrophication (water pollution) risk. |
| Lignosulfonates | Very low-cost water reducer for construction. | Limited chelation properties, may cause excessive air entrainment in concrete. |
