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Sodium Gluconate

Sodium Gluconate is a multifunctional organic compound derived from glucose through fermentation. It appears as a white crystalline powder, highly soluble in water, and is widely used as a chelating agent, set retarder, and stabilizer in various industrial applications.

Celix is a professional manufacturer and global supplier of construction chemicals, specializing in high-quality concrete admixtures and functional additives for modern building materials.


  • CAS No.: 527-07-1

  • Type: Retarder Agent

  • Appearance: White crystalline powder

  • HS Code: 29181600

  • Model No.: SG-303


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Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
Sodium Gluconate
FAQs

Sodium Gluconate Functions

Concrete Retarder & Water Reducer Aid

In construction, Sodium Gluconate acts as an efficient set retarder, delaying cement hydration and improving workability. It also enhances the performance of superplasticizers in concrete formulations.

Metal Chelating Agent

Effectively binds metal ions (Ca²⁺, Fe³⁺, Al³⁺), preventing precipitation and improving system stability in industrial processes.

Scale & Corrosion Inhibitor

Widely used in water treatment systems to prevent scale formation and protect equipment from corrosion

Cleaning Agent Enhancer

Improves the efficiency of detergents and industrial cleaners by softening water and boosting cleaning performance.

Sodium Gluconate Specification

Item

Specification

Sodium gluconate

≥98%

Water Content

≤1.4%

Glucose

≤0.5%

Sodium chloride

≤0.05%

Sodium sulfate

≤0.05%


Sodium Gluconate Applications In Construction

Ready-mix concrete
Precast and prestressed concrete
Pumped concrete and mass concrete
High-strength and high-performance concrete
Ready-mix concrete
Ready-mix concrete

Acts as a set retarder to extend working time, improving slump retention during transportation.

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Precast and prestressed concrete
Precast and prestressed concrete

Controls setting time for better molding and finishing, while helping reduce surface defects.

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Pumped concrete and mass concrete
Pumped concrete and mass concrete

Delays hydration to reduce heat buildup, minimizing thermal cracking risk in large-volume pours

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High-strength and high-performance concrete
High-strength and high-performance concrete

Improves dispersion and workability at low water-cement ratios, supporting better strength development and durability.

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FAQ-Sodium Gluconate

How does Sodium Gluconate work as a retarder in concrete and mortar?

Sodium Gluconate acts as an exceptionally efficient set retarder. It adsorbs onto the surface of hydration particles (primarily tricalcium silicate and aluminate), forming a temporary protective barrier that slows down initial hydration and hydration heat release.

  • Benefits: Extends initial and final setting times, prevents cold joints, enhances workability retention during long-distance transportation or hot weather, and boosts long-term compressive strength without cracking.

What is Sodium Gluconate and what are its main industrial applications?

Sodium Gluconate is a high-purity, white crystalline powder derived from the fermentation of glucose. It is a non-toxic, highly biodegradable organic sodium salt with exceptional chelating and retarding capabilities.

Main Applications:

  • Construction: Set retarder and water-reducing agent in concrete and mortar formulations.

  • Water Treatment: Scale and corrosion inhibitor for cooling towers, boilers, and industrial water systems.

  • Industrial Cleaning: Metal surface cleaner, bottle-washing agent, and glass cleaning formulations.

  • Textile & Printing: Sequestering agent for metal ions in dyeing and printing processes.

What is the recommended dosage rate in concrete formulations?

  • Standard Dosage: Typically 0.03% to 0.1% by total weight of cementitious materials (0.3 kg to 1.0 kg per ton of cement).

  • High-Retardation Needs: Dosages up to 0.15%–0.3% can be used in specialized deep-well oil cementing or mass concrete pours requiring extended setting times.

Is Sodium Gluconate compatible with Polycarboxylate Superplasticizers (PCE)?

Yes, perfectly compatible. In fact, Sodium Gluconate is one of the most widely used co-retarders in PCE liquid and powder formulations. Adding a small percentage of Sodium Gluconate to PCE admixtures significantly improves slump retention over long delivery times, especially in high-temperature climates, without causing segregation.


What are the key technical advantages of Sodium Gluconate over inorganic retarders (like citric acid or phosphates)?

  • Lower Strength Loss: Unlike citric acid, which can significantly reduce early-stage compressive strength, Sodium Gluconate maintains or even improves 28-day concrete compressive strength.

  • Broader Temperature Stability: Remains effective in hot weather conditions where standard retarders lose performance.

  • Excellent Chelating Power: Forms strong, water-soluble chelates with heavy metal ions (Ca²⁺, Mg²⁺, Fe³⁺) across wide pH ranges (especially alkaline conditions).


What are the packaging and storage conditions?

  • Standard Packaging: 25 kg multi-wall paper-plastic bags with inner PE liners, or 1000 kg jumbo bags for bulk ocean freight. Palletized and stretch-wrapped.

  • Storage & Shelf Life: Store in a cool, dry, and well-ventilated warehouse away from direct moisture, as it is slightly hygroscopic. Shelf life is 24 months in unopened original packaging.


Can you provide free samples for laboratory trial batches?

Yes. We provide free sample quantities (500g) for client laboratory testing, water treatment chelating assays, and concrete trial batches. Contact our technical sales team to arrange express delivery for your test samples.


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Celix Cellulose Co., Ltd, is an integrated chemical cellulose manufacturer with in-house R&D, factories, and global sales sites.


Our products include HPMC, HEC, MHEC, VAE RDP, PCE, PVA, Defoamers, PP fibers, HPS, SHP and Gypsum Retarder.

Celix Cellulose Co., Ltd, is an integrated chemical cellulose manufacturer with in-house R&D, factories, and global sales sites.


Our products include HPMC, HEC, MHEC, VAE RDP, PCE, PVA, Defoamers, PP fibers, HPS, SHP and Gypsum Retarder.

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  • info@celixcellulose.com
  • Factory Address: XiuCun West, Jinzhou Economic Development Zone, Shijiazhuang City, Hebei Province, China.
  • HQ Office Address: 1806, Zhongheng Building, Chang'an district, Shijiazhuang, Hebei Province, China.
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