MONOSODIUM CITRATE ANHYDROUS POWDER

Food and pharmaceutical grade buffering salt with controlled particle size for dry blends and effervescent systems

Monosodium Citrate Anhydrous Powder Product Overview

Monosodium citrate anhydrous powder is a water-free citrate salt supplied as a fine crystalline powder, developed for applications requiring controlled buffering capacity, precise pH adjustment, and fast dissolution.

In powder form, monosodium citrate anhydrous is widely used in dry blends, premixes, and moisture-sensitive formulations, where accurate dosing and homogeneous distribution are essential. It functions as a buffering agent, flavour balancer, and functional formulation ingredient across food, beverage, pharmaceutical, and personal care applications.

Citribel supplies monosodium citrate anhydrous powder manufactured in Europe, with a defined particle size distribution designed to support predictable processing behaviour and consistent product quality.

Why choose Monosodium Citrate Anhydrous Powder?

Water-free grade for moisture-sensitive formulations
As an anhydrous (water-free) grade, monosodium citrate powder is suitable for formulations where low moisture content is critical, such as effervescent and hygroscopic systems. The absence of crystal water supports formulation stability and shelf-life control.

Powder morphology for fast dissolution and reliable buffering
The fine crystalline powder provides a high specific surface area, enabling rapid and reproducible dissolution in aqueous systems. This supports stable pH control in both liquid products and reconstituted formulations.

Improved homogeneity in dry blends and premixes
Compared with coarser grades, the powder form enables uniform dispersion in blends, reducing segregation risk and supporting consistent mixing performance in premixes, sachets, and pharmaceutical blends.

Defined particle size for consistent processing performance
Citribel monosodium citrate anhydrous powder is supplied with a controlled sieve profile, ensuring reliable flow, dosing, and dissolution behaviour across batches — supporting manufacturing under validated process conditions.

Broad formulation flexibility
Monosodium citrate anhydrous powder integrates into both dry and liquid processing routes. It is used where buffering performance, flavour balance, and formulation stability are required across multiple industries.

Monosodium citrate anhydrous powder from Citribel combines controlled moisture content, defined particle size, and reliable buffering performance. It is a suitable ingredient for food, beverage, pharmaceutical, and personal care applications where process consistency and formulation stability are essential.

Product identification

Chemical name: 2-hydroxy-1,2,3-propanetricarboxylic acid monosodium salt
Synonyms: monosodium citrate; citric acid monosodium salt
CAS number: 18996-35-5
E-number: E 331 (i)
INCI name: Sodium citrate
Empirical formula: C₆H₇NaO₇
Molecular mass: 214.11 g/mol
Appearance: white, crystalline powder; practically odourless; slightly acidic taste

Typical Applications

Food and beverage

Buffering agent in dry beverage mixes, powdered drinks, and instant food systems
Supports flavour balance through mild acidic and saline taste modulation
Used in granulated or premixed formulations where flow stability is required

Pharmaceutical preparations

Buffering component in pharmaceutical formulations
Used in effervescent tablets and granulated dosage forms
Supports controlled pH in reconstitution systems

Personal care

Used as a pH-adjusting and buffering ingredient
Applied in dry or reconstituted personal care formulations
Supports formulation stability in pH-sensitive systems

Industrial & polymer-related applications

Water-based polymer dispersions and coatings
Supporting pH control and system stability during production and storage.
Bio-based and biodegradable polymer processing
Used as a processing aid in PLA-based systems and starch–polymer blends to support stable processing conditions.
Polymer processing with sensitivity to trace metal ions
Providing mild chelation to help maintain colour and processing stability
Set retarder for cement and cement composites
Effective, less-aggressive, and less-hygroscopic alternative to citric acid for retarding the setting time of cement, gypsum, and concrete, extending working time by inhibiting early hydration, enhancing rheological properties, and improving compressive strength.
Blowing agent for polymers
Effective, non-toxic, endothermic, and food-grade blowing agent for plastics, rubber, and polymers to create fine, uniform, and stable foam structures, providing an eco-friendly alternative to hazardous exothermic agents like azo compounds.

Food & Beverage

Citribel’s ingredients function as reliable buffering agents in dry beverage mixes, powdered drinks, and instant food systems, supporting flavour balance, flow stability, and consistent performance in granulated and premixed formulations.

Personal Care

Citribel’s personal care ingredients, including high-purity citric acid and citrate salts, provide precise pH adjustment, buffering capacity, and formulation stability for skincare, haircare and hygiene products.

Pharmaceuticals

Citribel’s citrate ingredients are used as pH-adjusting and buffering agents in personal care formulations, supporting stability and performance in dry, powder-based, and reconstituted systems.

Industrial & Polymer Applications

For industrial and polymer-related applications, Citribel’s solutions support pH control, mild chelation, polymer processing stability, cement set retardation, and endothermic blowing performance, offering a safer and more controlled alternative to conventional additives in coatings, biodegradable polymers, cement systems, and plastics.

Technical Highlights

Selected essential specifications of our monosodium citrate anhydrous powder are listed here. For a full specification list, see the product data sheet for download below.

Assay: 99.8–100.2% (calculated by water content)
Water (Karl Fischer): 0.00–0.20%
Heavy metals (sum): < 1 ppm
Chlorides: < 5 ppm; Sulphates: < 30 ppm; Oxalates: < 10 ppm
Solubility: very soluble in water; freely soluble in ethanol; sparingly soluble in ether

Powder grade: particle size control (ISO sieves / mesh)

If your application requires a powder form, Citribel provides a defined sieve profile:
Citric Acid Anhydrous — Powder
- On No. 60 (250 µm): max. 5%
- Through No. 200 (75 µm): min. 65%
This helps support repeatability in:
- Dry blending
- Premix preparation
- Controlled dissolution and consistent acidification profiles

For monosodium citrate anhydrous powder, Citribel offers 25 kg packaging, supporting industrial procurement and plant handling.

(Additional citrate formats and solution variants are available across the Citribel portfolio.)

Packaging and supply options

Commercial name	Reference	Available packaging	Compendia Compliance
Monosodium Citrate Anhydrous Granular	04 12570	25 kg	DAC, JECFA, OU, H
Monosodium Citrate Anhydrous Powder	04 12562	25 kg	DAC, JECFA, OU, H

Certifications

To guarantee the quality of our products, Citribel has taken steps to certify its products. Citribel is proudly certified:

Ecovadis, for its sustainable approach
GMP+ for feed safety assurance
Halal, by the Halal Food Authority
Kosher, through the Kosher Certification Service
ISO 9001 / ISO 14001 / ISO 22000 / FSSC 22000

Downloads

Frequently Asked Questions

What is monosodium citrate anhydrous powder used for?

Monosodium citrate anhydrous powder is used as a buffering agent, pH regulator and processing aid in dry food, pharmaceutical and industrial formulations. It is commonly applied in effervescent tablets, granules, powdered beverage mixes and moisture-sensitive premixes. The powder form ensures easy blending, controlled dosing and stable performance in dry systems.

Why choose an anhydrous powder form?

Yes. Monosodium citrate anhydrous powder is widely used in effervescent tablets and granules. It supports controlled CO₂ release when combined with bicarbonates and helps maintain a stable pH after dissolution. The water-free powder improves storage stability.

How does monosodium citrate powder differ from trisodium citrate powder?

Monosodium citrate powder provides a mildly acidic buffering profile, while trisodium citrate powder has a more alkaline effect and higher sodium content. Monosodium citrate is typically preferred in effervescent and dry formulations where controlled acidity is required.

What particle sizes are available for monosodium citrate anhydrous powder?

Citribel offers monosodium citrate anhydrous powder in fine and controlled granulation grades. Particle size can be selected based on flowability, blending behaviour and dissolution rate. Detailed particle size distribution (PSD) data is available upon request.

Is monosodium citrate anhydrous powder soluble in water?

Yes. The powder dissolves readily in water and forms a clear solution, making it suitable for reconstitution systems and aqueous pharmaceutical preparations.

Can monosodium citrate anhydrous powder be used in pharmaceutical applications?

Yes. The powder is used as a buffering component and pH stabilizer in pharmaceutical formulations, particularly in effervescent dosage forms and granulated systems. Technical and regulatory documentation is available upon request.Yes. The powder is used as a buffering component and pH stabilizer in pharmaceutical formulations, particularly in effervescent dosage forms and granulated systems. Technical and regulatory documentation is available upon request.

MONOSODIUM CITRATE ANHYDROUS POWDER