Sodium Citrate

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Sodium Citrate is the sodium salt of citric acid, available as a white, crystalline powder or granules. It functions primarily as a buffering agent, acidity regulator, and sequestrant in food, pharmaceutical, and industrial applications. It helps maintain pH stability, enhances flavor, and prevents metal ion-induced spoilage. The 25kg packaging is typical for bulk industrial or food processing use.

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Categories: Excipients, FOOD AND BEVERAGE CHEMICALS, PHARMACEUTICAL CHEMICALS, Preservatives(food) Tags: Buffering agent, Food additive, Pharmaceutical industry, Sodium Citrate, Trisodium Citrate

Description

Table of Contents

Sodium Citrate

Primary Uses

Food & Beverage Industry
- Acts as a buffering agent to maintain stable pH in beverages, dairy products, and processed foods.
- Functions as a sequestrant to bind metal ions, preventing oxidation and spoilage.
- Used as a flavoring agent to impart a mild tartness in soft drinks, jams, and confections.
- Serves as an emulsifier in processed cheese and dairy products for smooth texture.
Pharmaceuticals
- Used as an alkalizing agent in oral and injectable formulations.
- Included in effervescent tablets and powders for controlled acidity.
- Acts as an anticoagulant in blood collection tubes by chelating calcium ions.
Cosmetics and Personal Care
- Functions as a pH adjuster and chelating agent in skincare and haircare products.

Secondary Uses

Industrial Applications
- Used in detergents and cleaning agents as a water softener and pH buffer.
- Employed in photographic processing as a buffering agent.
Laboratory & Analytical
- Utilized as a buffering agent in biochemical assays and molecular biology protocols.

PRODUCT KEY FEATURES

Basic Identification Attributes

Chemical Name (IUPAC): Trisodium 2-hydroxypropane-1,2,3-tricarboxylate
Common/Trade Name: Sodium Citrate
CAS Number: 68-04-2
HS Code: 2918.14
Synonyms: Trisodium citrate, Sodium citrate tribasic

Physical & Chemical Properties

Physical State: Powder or granules
Color & Odor: White, odorless
Solubility: Highly soluble in water
pH: Approximately 8.3 (1% aqueous solution)
Density: ~1.676 g/cm³

Safety & Hazard Attributes

GHS Classification: Generally regarded as safe; minimal hazard
Toxicity: Low toxicity; safe in intended applications
Exposure Limits: No established occupational exposure limits

Storage & Handling Attributes

Storage Conditions: Store in a cool, dry place in tightly sealed containers away from moisture
Container Type: Supplied in sealed 25kg bags or drums
Shelf Life: Typically 2–3 years if stored properly
Handling Precautions: Avoid dust generation; use dust masks if needed

Regulatory & Compliance Attributes

Complies with food-grade standards (e.g., FCC, USP, E331)
Approved for use by FDA, EFSA, and other international food safety authorities
Manufactured in GMP-certified facilities

Environmental & Health Impact

Biodegradability: Readily biodegradable
Ecotoxicity: Low environmental toxicity

Bioaccumulation: Not significant

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE Required: Gloves, goggles, and dust mask recommended during handling
Handling Guidelines: Avoid inhalation of dust; work in well-ventilated areas
Storage Measures: Keep containers tightly closed and stored in a dry environment

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if irritation occurs
Skin Contact: Wash with soap and water; seek medical advice if irritation develops
Eye Contact: Rinse thoroughly with water for 15 minutes; seek medical help if irritation persists
Ingestion: Rinse mouth; seek medical attention if large amounts ingested

Firefighting Measures