Description

Polyhydroxybutyrate (PHB) is a naturally occurring, biodegradable polyester belonging to the polyhydroxyalkanoate (PHA) family, synthesized by microorganisms as an energy storage material. Its significance lies in its exceptional biocompatibility and ability to degrade into non-toxic components, offering a sustainable alternative to conventional petroleum-based plastics. This makes it a critical material for industries focused on environmental responsibility, advanced medical solutions, and high-performance biodegradable packaging.

Application

• Biodegradable Packaging: Used in the production of films, containers, and coatings that fully compost in industrial and home composting environments.
• Medical & Pharmaceutical Devices: Serves as a biocompatible material for sutures, drug delivery matrices, tissue engineering scaffolds, and implantable medical devices due to its controlled degradation profile.
• Agriculture & Horticulture: Employed in biodegradable mulch films, plant pots, and controlled-release matrices for fertilizers and pesticides.
• 3D Printing Filaments: Utilized as a sustainable, high-performance material for additive manufacturing in prototyping and custom part production.
• Consumer Goods: Found in disposable cutlery, cosmetic containers, and other single-use items where biodegradability is a key requirement.
• Advanced Composites: Acts as a matrix or additive in bio-composites to enhance material properties while maintaining environmental credentials.

Basic Information

Product Name	Polyhydroxybutyrate
CAS No.	26744-04-7
Molecular Formula	(C4H6O2)n
Molecular Weight	Variable (Polymer)
Synonyms	PHB; Poly(3-hydroxybutyrate); Poly-3-hydroxybutyric acid; P(3HB); (R)-3-Hydroxybutyric acid homopolymer; Biopol; Biomer; Microbial Polyester; Polyhydroxybutyric Acid
EINECS	Contact for details

Quality Control

Our Polyhydroxybutyrate is produced under stringent quality management systems to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive analytical testing, including determination of molecular weight, thermal properties, and purity. Certificates of Analysis (COA) detailing specific lot results 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). This material is hygroscopic (moisture-sensitive); prolonged exposure to high humidity should be avoided to prevent degradation of polymer properties.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to standard
Purity (PHB Content)	> 98%
Molecular Weight (Mw)	200,000 - 600,000 Da (Grade Dependent)
Melting Point (DSC)	160 - 180 °C
Residual Solvent	< 0.5%
Ash Content	< 0.1%
Moisture Content (KF)	< 1.0%

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