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    Related: Preservative Ingredient O-Toluic Acid Calcium Propionate
    • Benzoic Acid CAS 65-85-0
    • Benzoic Acid CAS 65-85-0
    • Benzoic Acid CAS 65-85-0

    Benzoic Acid CAS 65-85-0

    Benzoic Acid CAS 65-85-0 is a crystalline aromatic carboxylic acid chemically defined as benzenecarboxylic acid, functioning primarily as a precursor for the synthesis of sodium benzoate preservatives and a chain-stopping agent in alkyd resin production. Also known as Dracylic acid or Carboxybenzene, this organic solid is utilized to regulate polymerization molecular weight in industrial coating formulations and serves as a pH adjuster and antimicrobial intermediate in cosmetic and pharmaceutical processing. We provide professional access to this material with competitive factory pricing and the ability to meet customized specifications for various manufacturing requirements. Our commitment to technical transparency ensures that every shipment is accompanied by comprehensive MSDS, TDS, COA documentation to support your quality assurance protocols, and we maintain capacity for consistent bulk supply to facilitate large-scale industrial operations.

    • CAS: 65-85-0
    • Synonyms: Benzenecarboxylic acid, Carboxybenzene, Dracylic acid, Phenylformic acid, Benzeneformic acid
    • Einecs: 200-618-2
    • Molecular Formula: C7H6O2
    • Grade: Food/Pharma Grade
    • Package: 25kg/bag (Plastic woven bag with PE liner) or 500kg/1000kg Jumbo Bag.
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    Product Description

    1 Physical & Chemical Properties
    2 Key Applications
    2.1 1. Plasticizers and Resins (Industrial Grade)
    2.2 2. Food & Beverage Preservation (Food Grade)
    2.3 3. Pharmaceutical Intermediates
    2.4 4. Chemical Synthesis
    3 Safety and Prevention Measures
    4 Storage and Handling Conditions

    Physical & Chemical Properties

    Benzoic Acid typically appears as white, silk-like scales or needles. While it is solid at room temperature, its behavior under heat and in solvents defines its utility.

    PropertySpecification / Description
    Chemical NameBenzoic Acid
    CAS Number65-85-0
    Molecular FormulaC7H6O2
    AppearanceWhite crystalline powder, scales, or needles
    Molar Mass122.12 g/mol
    Melting Point122.4°C (252.3°F)
    Boiling Point249.2°C (480.6°F)
    Solubility (Water)Slightly soluble in cold water (2.9 g/L at 20°C); Soluble in hot water
    Solubility (Solvents)Soluble in alcohol, ether, and benzene
    Flash Point121°C (Closed Cup)
    SublimationBegins to sublime at approx. 100°C

    Key Applications

    Benzoic Acid is rarely the end product; it is the catalyst for performance in other sectors.

    1. Plasticizers and Resins (Industrial Grade)

    This is the largest consumption sector. Benzoic Acid is a primary raw material for benzoate plasticizers, which are increasingly popular as eco-friendly alternatives to phthalates in PVC and other polymers. It is also used in Alkyd Resins to improve the gloss, adhesion, and hardness of paints and coatings.

    2. Food & Beverage Preservation (Food Grade)

    Known as preservative E210, Benzoic Acid and its salts (Sodium Benzoate) inhibit bacteria, yeast, and mold. It is highly effective in acidic environments, making it the standard for soft drinks, fruit juices, pickles, and barbecue sauces.

    3. Pharmaceutical Intermediates

    It serves as a precursor for various drugs and is used directly in antifungal ointments (such as Whitfield’s Ointment) to treat fungal skin diseases.

    4. Chemical Synthesis

    It is the starting material for Benzoyl Chloride, a critical intermediate used in the production of peroxides (for polymerization initiation) and dyes.

    Safety and Prevention Measures

    While Benzoic Acid is widely used, it is categorized as an irritant. Proper handling protocols are non-negotiable to ensure worker safety.

    • Dust Hazards: The fine powder form can generate dust clouds. In high concentrations, organic dust can be combustible. Facilities must use grounded equipment and explosion-proof ventilation.
    • Inhalation: Inhaling the dust causes irritation to the nose and throat. Staff should always use NIOSH-approved dust masks (N95 or equivalent).
    • Skin & Eye Contact: It can cause mild to moderate irritation. Safety goggles and protective gloves are standard requirements.
    • First Aid: In case of contact with eyes, rinse immediately with plenty of water for at least 15 minutes.

    For the water-soluble benzoate salt commonly selected for preservation systems, see Sodium Benzoate.

    Storage and Handling Conditions

    One of the most common issues buyers face with Benzoic Acid is “caking”—where the powder clumps together into hard blocks. This usually happens due to poor storage.

    To maintain the free-flowing nature of the material:

    1. Humidity Control: Store in a dry area. Relative humidity should be kept low.
    2. Temperature: Keep in a cool, well-ventilated place, away from direct sunlight and heat sources. The melting point is relatively low; excess heat can encourage caking.
    3. Separation: Store away from strong oxidizers (like fluorine or oxygen) and strong bases.
    4. Packaging Integrity: Most exports from China come in 25kg woven bags with PE liners. Ensure the inner liner is sealed tight after partial use to prevent moisture absorption.

    FAQ - Technical & Supply Chain

    • Q:

      What is Benzoic Acid CAS 65-85-0?

      A: Benzoic Acid CAS 65-85-0 is an aromatic carboxylic acid with molecular formula C7H6O2, molecular weight 122.12, and EINECS 200-618-2. It is also known as benzenecarboxylic acid, phenylformic acid, or carboxybenzene.
    • Q:

      Why does Benzoic Acid have limited cold-water solubility?

      A: Benzoic Acid is only slightly soluble in cold water, around 2.9 g/L at 20 C, because the undissociated acid is not strongly hydrated. For aqueous use, it can be dissolved in hot water or converted to a soluble benzoate salt such as sodium benzoate.
    • Q:

      How is Benzoic Acid used in plasticizers and alkyd resins?

      A: It is a building block for benzoate plasticizers used as alternatives to some phthalate plasticizers in PVC and other polymers. In alkyd resin and polyester synthesis, it acts as a chain terminator that helps control molecular weight, viscosity, gloss, adhesion, and hardness.
    • Q:

      Why is Benzoic Acid used as a food and beverage preservative?

      A: Benzoic acid and its salts inhibit yeasts, molds, and certain bacteria in acidic foods and beverages. Its antimicrobial activity is strongest in the undissociated acid form, so benzoic acid is generally most effective in low-pH products.
    • Q:

      What other industrial applications use Benzoic Acid?

      A: It is used as a chemical intermediate for pharmaceuticals, dyes, flavors, benzoyl chloride, and other derivatives. It can also serve as a preservative or corrosion-control additive in selected industrial formulations, coatings, and drilling-fluid systems.

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