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Citric Acid Anhydrous

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Citric Acid Anhydrous is a white, crystalline organic acid widely used across food, pharmaceutical, cosmetic, and industrial sectors. It is the anhydrous form of citric acid, meaning it contains no water molecules in its crystal lattice, resulting in higher purity and more concentrated acidic properties compared to its monohydrate form. Derived from natural sources like citrus fruits or produced via microbial fermentation, citric acid anhydrous is valued for its sour taste, excellent chelating ability, and buffering capacity. It serves as a natural preservative, pH adjuster, antioxidant synergist, and cleaning agent, making it a versatile ingredient in many formulations.

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Categories: Acidulants, Antioxidants, Chelating Agents Tags: Citric acid anhydrous, Citric acid powder, Cleaning and descaling products, Cosmetics and personal care, Food and beverage industry, Organic Acid, Pharmaceuticals, Preservative and flavoring agent, White crystalline powder

Description

Table of Contents

Citric Acid Anhydrous

Primary Uses

Food & Beverage Industry

Used as an acidulant to provide tartness and enhance flavor in beverages, candies, jams, and dairy products.
Acts as a preservative by chelating metal ions that catalyze oxidative spoilage, extending shelf life.
Employed as a pH regulator to maintain product stability and consistency.
Used in effervescent powders and tablets combined with bicarbonates for controlled fizzing.

Pharmaceuticals & Nutraceuticals

Serves as a pH adjuster in oral syrups, tablets, and effervescent formulations.
Used to stabilize active ingredients sensitive to alkaline conditions.
Acts as a chelating agent enhancing bioavailability of minerals and vitamins in supplements.

Cosmetics & Personal Care

Used to adjust pH in creams, lotions, shampoos, and bath products.
Functions as an antioxidant synergist by chelating metal ions that degrade product quality.
Incorporated in exfoliating formulations due to its mild acidity and natural origin.

Industrial & Cleaning Applications

Used as a biodegradable chelating agent in detergents and cleaners to remove scale and metal deposits.
Employed in metal surface treatment and descaling processes.
Acts as a buffering agent in chemical manufacturing and laboratory reagents.

Secondary Uses

Agriculture

Used in foliar sprays and fertilizers to chelate micronutrients, improving plant nutrient uptake.

Water Treatment

Serves as a sequestering agent to control hardness and prevent scale buildup in boilers and cooling systems.

Textile Industry

Applied in dyeing processes to adjust pH and improve color fastness and brightness.

Food Packaging

Incorporated in active packaging materials as an antimicrobial and antioxidant component.

Additional information

PACK SIZE	25kg

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name (IUPAC): 2-hydroxypropane-1,2,3-tricarboxylic acid (Anhydrous)
Common/Trade Name: Citric Acid Anhydrous
CAS Number: 77-92-9
HS Code: 2918.14.00
Molecular Formula: C₆H₈O₇
Synonyms: Citric Acid, Anhydrous; 2-hydroxy-1,2,3-propane-tricarboxylic acid

2. Physical & Chemical Properties

Physical State: White crystalline powder or granules
Color & Odor: White; odorless or faintly acidic odor
Melting Point: 153°C (decomposes)
Solubility: Highly soluble in water (~59 g/100 mL at 20°C); insoluble in alcohol and ether
pH (1% solution): ~1.7 (acidic)
Stability: Stable under normal conditions; hygroscopic (absorbs moisture)

3. Safety & Hazard Attributes

Hazard Class (GHS): Generally considered safe; irritant in concentrated form
NFPA Ratings: Health 2, Flammability 0, Reactivity 0
Exposure Limits: No established OSHA PEL; avoid inhalation of dust
Toxicity: Low toxicity; generally recognized as safe (GRAS) in food
Reactivity: Stable; reacts with strong bases and oxidizers

4. Storage & Handling Attributes

Storage Conditions: Store in a cool, dry, well-ventilated area away from moisture and incompatible substances
Container Type: Sealed polyethylene or fiber drums, or food-grade bags
Shelf Life: Typically 3-5 years if stored properly
Special Handling: Avoid dust formation; use appropriate PPE like masks and gloves when handling powders

5. Regulatory & Compliance Attributes

FDA Status: GRAS for food use (21 CFR §184.1033)
Food Additive Code (EU): E330
REACH Status: Registered
Transportation: Not classified as hazardous
Waste Disposal: Dispose in accordance with local regulations; biodegradable

6. Environmental & Health Impact

Ecotoxicity: Low environmental impact; biodegradable and non-toxic to aquatic life at typical use concentrations
Persistence: Readily biodegradable
Bioaccumulation: Not expected to bioaccumulate
Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
Biodegradability: Rapidly biodegradable

SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

PPE: Dust mask, gloves, goggles when handling powders
Handling: Avoid inhalation and prolonged skin contact; minimize dust generation
Storage: Keep containers tightly closed and dry
Hygiene: Wash hands after use; no eating or drinking in handling areas

First Aid Measures

Inhalation: Move to fresh air; seek medical attention if irritation or breathing difficulty occurs
Skin Contact: Wash with soap and water; seek medical care if irritation develops
Eye Contact: Rinse eyes with plenty of water for at least 15 minutes; seek medical advice if irritation persists
Ingestion: Generally safe in small amounts; rinse mouth and drink water; seek medical advice if large quantities ingested

Firefighting Measures

Fire Hazards: Non-flammable; may decompose to emit carbon oxides under intense heat
Extinguishing Media: Use water spray, foam, dry chemical, or CO₂ extinguishers
Special Precautions: Firefighters should wear protective gear and self-contained breathing apparatus if large fire
Decomposition Products: Carbon dioxide, carbon monoxide