Description

Oak, Quercus Alba, Ext. is a standardized botanical extract derived from the bark of the White Oak tree (*Quercus alba*). This natural extract is valued for its rich content of bioactive tannins and polyphenols, offering astringent and antioxidant properties. It serves as a key functional ingredient for manufacturers in the cosmetic, nutraceutical, and traditional herbal supplement industries seeking natural, plant-based solutions.

Application

• Cosmetic & Skincare Formulations: Used in toners, astringents, and aftershave products for its skin-tightening and pore-refining effects.
• Nutraceutical & Dietary Supplements: Incorporated into capsules and tablets for its traditional supportive benefits and antioxidant content.
• Oral Care Products: Employed in mouthwashes and natural toothpaste for its mild astringent and antimicrobial properties.
• Natural Preservatives & Stabilizers: Acts as a natural preservative in certain formulations due to its tannin content.
• Herbal Extracts & Traditional Medicine: Serves as a base material for further processing into standardized herbal preparations.
• Research & Development: Used in biochemical and pharmacological research investigating natural compounds.

Basic Information

Product Name	Oak, Quercus Alba, Ext.
CAS No.	68917-11-3
Molecular Formula	Not Applicable (Complex Botanical Extract)
Molecular Weight	Not Applicable
Synonyms	White Oak Bark Extract; Quercus Alba Bark Extract; Oak Bark P.E.; Quercus Cortex Extract; Fagaceae Extract; Tannic Acid Extract (from Oak); Astringin (principal component); Quercitannic Acid Extract
EINECS	Contact for details

Quality Control

Our Oak, Quercus Alba, Ext. is produced under strict quality management protocols. Each batch is tested to ensure consistent activity, typically standardized to key marker compounds like tannins (as Pyrogallol). Our quality assurance includes identity confirmation, purity assessment, and contaminant screening. Certificates of Analysis (COA) detailing specifications and test results are available for every shipment to ensure full traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed in a low-humidity environment to prevent caking or degradation.

Specification

Item	Specification
Appearance	Fine Brown Powder
Identification (TLC/IR)	Conforms to Standard
Assay (Tannins as Pyrogallol)	Min. 40% (or as per customer grade)
Loss on Drying	≤ 5.0%
Ash	≤ 5.0%
Heavy Metals (as Pb)	≤ 10 ppm
Total Plate Count	≤ 1000 cfu/g
Yeast & Mold	≤ 100 cfu/g

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.