What is Arachidonic Acid CAS 506-32-1?

Arachidonic Acid CAS 506-32-1, also called ARA or eicosatetraenoic acid, is an all-cis omega-6 long-chain polyunsaturated fatty acid with the formula C20H32O2. It is supplied as a high-purity ARA oil or microencapsulated powder for infant nutrition, functional foods, supplements and animal feed.

What ARA oil and powder grades are available?

The standard oil grade is standardized to at least 40% arachidonic acid and appears as a light yellow to yellow clear liquid. The powder grades are standardized to 10% or 20% ARA and are white to light yellow free-flowing powders for dry-blend and water-dispersible applications.

Why is Arachidonic Acid added to infant formula?

ARA helps match the long-chain polyunsaturated fatty acid profile of breast milk. It supports brain and visual development and contributes to immune function in infants, so it is commonly formulated together with DHA in infant formula and baby food.

What specifications help keep Arachidonic Acid stable?

The oil and powder grades control peroxide value at no more than 5.0 meq/kg, and the oil grade limits acid value to no more than 1.0 mg KOH/g. Low trans fatty acids, mild odor and the absence of rancid odor help protect this omega-6 fatty acid from oxidative degradation.

How should Arachidonic Acid oil and powder be stored?

Keep ARA oil refrigerated at 0-10 C in nitrogen-flushed, tightly sealed packaging, and store the powder below 25 C in a cool, dry place. Both forms should be protected from direct sunlight, strong light and prolonged exposure to air.

What is the difference in solubility between ARA oil and powder?

ARA oil is practically insoluble in water and soluble in organic solvents. ARA powder is water-soluble or dispersible and forms an emulsion, which makes it more convenient for liquid milk, yogurt and other water-based nutritional products.

Is Arachidonic Acid suitable for pet food?

Yes. Arachidonic Acid is especially important for cats because cats cannot synthesize sufficient ARA on their own. It is used in pet food and animal nutrition to support healthy skin, coat and normal metabolic function.

Is Arachidonic Acid the same as DHA?

No. Arachidonic Acid is an omega-6 fatty acid, while DHA is an omega-3 fatty acid. Both are long-chain polyunsaturated fatty acids that are important for infant development, but they have different chemical structures and physiological roles.

Arachidonic Acid CAS 506-32-1

Arachidonic Acid (ARA, eicosatetraenoic acid), CAS 506-32-1, is an all-cis omega-6 long-chain polyunsaturated fatty acid supplied as high-purity ARA oil or microencapsulated powder for infant nutrition, functional foods, supplements and animal feed. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 506-32-1
Synonyms: Arachidonic Acid (ARA) / Eicosatetraenoic Acid
Einecs: 208-033-4
Molecular Formula: C₂₀H₃₂O₂
Grade: Food Grade / Infant Grade / Feed Grade
Package: Oil: 20kg Aluminum Drum / 190kg Steel Drum (Nitrogen filled) Powder: 1kg/5kg Aluminum Foil Bag / 25kg Fiber Drum

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Product Description

Arachidonic Acid, CAS 506-32-1, also known as ARA or eicosatetraenoic acid, is the all-cis omega-6 long-chain polyunsaturated fatty acid C₂₀H₃₂O₂; the EC/EINECS number is 208-033-4.

Synonyms: arachidonic acid (ARA); eicosatetraenoic acid.

CAS: 506-32-1.

Molecular formula: C₂₀H₃₂O₂.

Molecular weight: 304.47 g/mol.

EC number: 208-033-4.

It is supplied as a light-yellow to yellow clear ARA oil or as a white to light-yellow free-flowing powder.

Standard oil grade is standardized to at least 40% ARA; powder grades are standardized to 10% or 20% ARA.

It is an all-cis omega-6 LCPUFA important for cell membranes and abundant in brain and retina.

It is used in infant formula and baby food to match the long-chain polyunsaturated fatty acid profile of breast milk.

It is used in dietary supplements, softgels, tablets and functional foods for cognitive and sports nutrition support.

Water-dispersible ARA powder is used in dairy products, liquid milk and yogurt.

It is used in pet food and animal nutrition, especially for cats, to support skin, coat and metabolism.

Confirm ARA content, peroxide value, acid value, trans fatty acids, moisture, heavy metals and arsenic.

Store ARA oil refrigerated at 0–10 °C in nitrogen-flushed, tightly sealed packaging; store powder below 25 °C.

Protect both forms from direct sunlight, strong light and prolonged exposure to air to prevent oxidation.

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, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Arachidonic Acid CAS 506-32-1?

A: Arachidonic Acid CAS 506-32-1, also called ARA or eicosatetraenoic acid, is an all-cis omega-6 long-chain polyunsaturated fatty acid with the formula C20H32O2. It is supplied as a high-purity ARA oil or microencapsulated powder for infant nutrition, functional foods, supplements and animal feed.
Q:
What ARA oil and powder grades are available?

A: The standard oil grade is standardized to at least 40% arachidonic acid and appears as a light yellow to yellow clear liquid. The powder grades are standardized to 10% or 20% ARA and are white to light yellow free-flowing powders for dry-blend and water-dispersible applications.
Q:
Why is Arachidonic Acid added to infant formula?

A: ARA helps match the long-chain polyunsaturated fatty acid profile of breast milk. It supports brain and visual development and contributes to immune function in infants, so it is commonly formulated together with DHA in infant formula and baby food.
Q:
What specifications help keep Arachidonic Acid stable?

A: The oil and powder grades control peroxide value at no more than 5.0 meq/kg, and the oil grade limits acid value to no more than 1.0 mg KOH/g. Low trans fatty acids, mild odor and the absence of rancid odor help protect this omega-6 fatty acid from oxidative degradation.
Q:
How should Arachidonic Acid oil and powder be stored?

A: Keep ARA oil refrigerated at 0-10 C in nitrogen-flushed, tightly sealed packaging, and store the powder below 25 C in a cool, dry place. Both forms should be protected from direct sunlight, strong light and prolonged exposure to air.
Q:
What is the difference in solubility between ARA oil and powder?

A: ARA oil is practically insoluble in water and soluble in organic solvents. ARA powder is water-soluble or dispersible and forms an emulsion, which makes it more convenient for liquid milk, yogurt and other water-based nutritional products.
Q:
Is Arachidonic Acid suitable for pet food?

A: Yes. Arachidonic Acid is especially important for cats because cats cannot synthesize sufficient ARA on their own. It is used in pet food and animal nutrition to support healthy skin, coat and normal metabolic function.
Q:
Is Arachidonic Acid the same as DHA?

A: No. Arachidonic Acid is an omega-6 fatty acid, while DHA is an omega-3 fatty acid. Both are long-chain polyunsaturated fatty acids that are important for infant development, but they have different chemical structures and physiological roles.

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