Description

Silk Powder is a finely milled, natural protein powder derived from pure silk fibroin. This versatile biomaterial is prized for its exceptional biocompatibility, moisture-binding properties, and smooth, luxurious texture. It serves as a high-performance functional ingredient across diverse industries, from premium personal care formulations to advanced biomedical applications.

Application

• Cosmetics & Skincare: Used as a natural opacifier, texture enhancer, and film-forming agent in foundations, powders, and serums for a silky-smooth finish and improved skin adhesion.
• Hair Care: Incorporated into shampoos, conditioners, and styling products to impart shine, reduce static, and improve hair manageability and strength.
• Pharmaceuticals & Nutraceuticals: Employed as a coating agent for tablets and capsules, and as a functional carrier material in controlled-release drug delivery systems.
• Biomedical Engineering: Utilized in research and development for tissue engineering scaffolds, wound dressings, and other biomaterial applications due to its biodegradability and biocompatibility.
• Food & Dietary Supplements: Acts as a natural protein source and texturizing agent in specialized nutritional products.
• Industrial Coatings: Serves as an additive to improve the gloss, smoothness, and durability of high-end paints and finishes.

Basic Information

Product Name	Silk Powder
CAS No.	9009-99-8
Molecular Formula	N/A (Natural Polymer)
Molecular Weight	Variable (High Molecular Weight Polymer)
Synonyms	Silk Fibroin Powder; Bombyx mori Silk Powder; Sericin-Free Silk Powder; Silk Protein Powder; Fibroin Powder; Silk Peptide Powder (hydrolyzed); Silk Amino Acid Powder (hydrolyzed); Powdered Silk
EINECS	Contact for details

Quality Control

Our Silk Powder is produced under strict quality management protocols. Each batch is tested to ensure it meets specifications for purity, particle size distribution, microbiological limits, and heavy metal content. We offer various grades, including cosmetic and technical, with relevant documentation. Certificates of Analysis (COA) are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from excessive heat and moisture. Under these conditions, the product remains stable for an extended period.

Specification

Item	Specification
Appearance	Fine white to off-white powder
Identification (IR)	Conforms to Silk Fibroin standard
Protein Content (Assay)	≥ 90%
Particle Size (D50)	< 50 µm (or as specified)
Loss on Drying	≤ 8.0 %
Ash Content	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Total Plate Count	≤ 1000 CFU/g

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