Benzoic Acid

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 Benzoic Acid is a white crystalline solid with a faint, pleasant odor, classified as a simple aromatic carboxylic acid. It is widely used as a food preservative, antimicrobial agent, and chemical intermediate. Naturally occurring in many plants, it is commercially produced through oxidation of toluene or extraction from natural sources. Benzoic acid is valued for its ability to inhibit the growth of mold, yeast, and certain bacteria, making it essential in food preservation and cosmetic formulations. It also serves as a precursor in the manufacture of various pharmaceuticals, dyes, and plasticizers.

Description

Benzoic Acid

Primary Uses 

  • Food Industry:
    Used as a food preservative (E210) to prevent spoilage by inhibiting microbial growth in acidic foods such as fruit juices, carbonated drinks, pickles, and sauces.

  • Pharmaceuticals:
    Used in topical antiseptic preparations, ointments, and dermatological products for its antifungal and antibacterial properties.

  • Cosmetics & Personal Care:
    Incorporated as a preservative and pH adjuster in cosmetics, shampoos, and lotions to prolong shelf life.

  • Chemical Intermediate:
    Used in the synthesis of benzoyl chloride, phenol, dyes, perfumes, and plasticizers.

  • Preservative for Industrial Products:
    Applied in adhesives, paints, and inks to prevent microbial contamination.

Secondary Uses

  • Agriculture:
    Used as a fungicide and herbicide to protect crops from fungal infections and weed growth.

  • Laboratory Reagent:
    Employed as a standard reagent for chemical synthesis and analysis.

  • Food Packaging:
    Used in active packaging materials to inhibit microbial growth and extend product shelf life.

  • Plastic and Polymer Industry:
    Serves as a precursor in manufacturing benzoyl peroxide, a polymerization initiator.

PRODUCT KEY FEATURES
  1. Basic Identification Attributes
  • Chemical Name (IUPAC): Benzoic acid

  • Common/Trade Name: Benzoic Acid

  • CAS Number: 65-85-0

  • HS Code: 2915.11.00

  • Molecular Formula: C₇H₆O₂

  • Synonyms: Phenylformic acid, Carboxybenzene, E210 (food additive code)

  1. Physical & Chemical Properties
  • Physical State: White crystalline powder or granules

  • Color & Odor: White, faint aromatic odor

  • Melting Point: 122–123°C

  • Boiling Point: 249.2°C

  • Density: 1.32 g/cm³

  • Solubility: Slightly soluble in water (~3.4 g/L at 20°C), soluble in ethanol, ether, and organic solvents

  • pH (1% aqueous solution): ~2.8 (acidic)

  • Vapor Pressure: 0.2 Pa at 25°C

  • Flash Point: 121°C

  • Autoignition Temperature: 428°C

  1. Safety & Hazard Attributes
  • Hazard Class (GHS): Skin irritant (Category 2), Eye irritant (Category 2A)

  • NFPA Ratings: Health 2, Flammability 1, Reactivity 0

  • Exposure Limits: OSHA PEL = 5 mg/m³ (respirable dust), ACGIH TLV = 5 mg/m³

  • Reactivity: Stable under normal conditions; incompatible with strong oxidizing agents

  • Incompatibilities: Strong oxidizers, strong bases, and reducing agents

  1. Storage & Handling Attributes
  • Storage Conditions: Store in a cool, dry, well-ventilated area away from heat and ignition sources

  • Container Type: Use tightly sealed containers made of corrosion-resistant materials

  • Shelf Life: Stable for years if stored properly

  • Special Handling: Avoid dust generation; use personal protective equipment (PPE) such as gloves, goggles, and dust masks

  1. Regulatory & Compliance Attributes
  • FDA (USA): Approved as food preservative (21 CFR 184.1029)

  • EFSA (EU): Approved food additive (E210)

  • OSHA: Regulated workplace chemical with exposure limits

  • Transportation: Non-hazardous under most regulations but requires proper packaging

  • Waste Disposal: Dispose according to local environmental regulations

  1. Environmental & Health Impact
  • Ecotoxicity: Low to moderate toxicity to aquatic organisms; biodegradable

  • Persistence: Biodegradable under aerobic conditions

  • Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic

  • Biodegradability: Biodegradable
SAFETY HANDLING PRECAUTIONS
  • Safety Handling Precautions

  • PPE: Wear gloves, safety goggles, and dust masks to prevent skin, eye, and respiratory exposure.

  • Dust Control: Use local exhaust ventilation and avoid dust accumulation.

  • Handling: Avoid inhalation and prolonged skin contact.

  • Storage: Keep containers tightly closed and away from incompatible substances.

  • Hygiene: Wash hands after handling; no eating, drinking, or smoking in the work area.

 

First Aid Measures

  • Inhalation: Move to fresh air; seek medical attention if respiratory irritation or difficulty occurs.

  • Skin Contact: Wash skin thoroughly with soap and water; seek medical advice if irritation develops.

  • Eye Contact: Rinse eyes with plenty of water for at least 15 minutes; consult a physician if irritation persists.

  • Ingestion: Rinse mouth with water; seek medical advice if large amounts are swallowed.

 

Firefighting Measures

  • Fire Hazards: Combustible solid; emits toxic fumes of carbon monoxide and carbon dioxide on burning.

  • Extinguishing Media: Use dry chemical powder, foam, or carbon dioxide. Avoid water spray which may spread the fire.

  • Special Precautions: Firefighters should wear self-contained breathing apparatus (SCBA) and protective clothing.