Description

Chestnut Extract CAS NO 89997-55-7 is a natural botanical extract derived from the chestnut tree, valued for its rich content of bioactive compounds such as tannins and flavonoids. This extract is significant for its potent astringent, antioxidant, and anti-inflammatory properties, making it a versatile ingredient for demanding industrial and consumer applications. It is primarily sought by manufacturers in the cosmetics, nutraceutical, and pharmaceutical industries for formulating skin care products, dietary supplements, and functional ingredients.

Application

• Cosmetic & Skincare Formulations: Used as a natural astringent and pore-refining agent in toners, cleansers, and anti-aging creams.
• Nutraceuticals & Dietary Supplements: Incorporated for its antioxidant benefits and to support vascular health.
• Pharmaceutical Intermediates: Serves as a starting material or active component in herbal medicinal preparations.
• Functional Food & Beverages: Added to provide natural antioxidant properties and potential health benefits.
• Hair Care Products: Utilized in shampoos and conditioners for its scalp-soothing and strengthening effects.
• Industrial Applications: Potential use in natural dyeing processes and as a tanning agent in leather processing.

Basic Information

Item	Detail
Product Name	Chestnut Extract
CAS No.	89997-55-7
Molecular Formula	Complex mixture; primarily polyphenolic compounds
Molecular Weight	N/A (Natural Extract)
Synonyms	Castanea Extract; Sweet Chestnut Extract; Castanea sativa Extract; Chestnut Tannin; Chestnut Bark Extract; Chestnut Leaf Extract; Chestnut Shell Extract; Aesculus Extract (related species)
EINECS	Contact for details

Quality Control

Our Chestnut Extract is produced and tested under strict quality management protocols to ensure batch-to-batch consistency and purity. Quality is verified through comprehensive analytical methods including HPLC for active marker compound quantification and tests for heavy metals, microbial limits, and residual solvents. A Certificate of Analysis (COA) documenting all specifications is provided with each shipment. Production can adhere to relevant standards such as ISO, GMP, and Kosher/Halal upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is light-sensitive and easily oxidized; prolonged exposure to air, light, or heat should be avoided to maintain stability and efficacy.

Specification

Item	Specification
Appearance	Brown to reddish-brown powder
Identification (TLC/IR)	Conforms to standard
Assay (Total Polyphenols)	Min. 40% (by UV-Vis)
Assay (Tannins)	Min. 20% (by HPLC)
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.