Why does Benzoic Acid have limited cold-water solubility?

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.

How is Benzoic Acid used in plasticizers and alkyd resins?

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.

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

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.

What other industrial applications use Benzoic Acid?

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.

Benzoic Acid CAS 65-85-0

Benzoic Acid, also called benzenecarboxylic acid or phenylformic acid, CAS 65-85-0, is a white crystalline aromatic carboxylic acid supplied in food or pharma grade. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

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

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

Synonyms: Benzenecarboxylic acid; Carboxybenzene; Dracylic acid; Phenylformic acid; Benzeneformic acid.

CAS: 65-85-0.

It has the molecular formula C7H6O2 and a molecular weight of 122.12 g/mol.

It appears as white crystalline powder, scales or needles and melts at about 122.4 °C.

It boils at about 249.2 °C and begins to sublime at approximately 100 °C.

It is slightly soluble in cold water at about 2.9 g/L at 20 °C and more soluble in hot water.

It is soluble in alcohol, ether and benzene, with a closed-cup flash point of about 121 °C.

As food preservative E210, it inhibits yeasts, molds and certain bacteria in acidic foods and beverages.

It is a primary raw material for benzoate plasticizers and is used in alkyd resins to improve gloss, adhesion and hardness.

It is a pharmaceutical intermediate and is used in antifungal ointments such as Whitfield’s ointment.

It is the starting material for benzoyl chloride and other chemical derivatives used in dyes and peroxide initiators.

As a raw material it is an irritant; use dust control, eye protection and gloves during handling.

Store in a cool, dry, well-ventilated area away from direct sunlight, heat, strong oxidizers and strong bases.

Confirm appearance, assay, melting range, related substances, heavy metals, loss on drying and residue limits as required.

Keep the inner liner sealed after partial use to prevent moisture absorption and caking.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and specification, quantity, packaging, destination and document needs.

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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