Description

2,4,8,10-Tetraoxa-3,9-Diboraspiro[5.5]Undecane, 3,9-Bis(4-Methylphenyl)- is a specialized organoboron compound featuring a unique spirocyclic structure. This chemical is valued as a high-performance cross-linking agent and catalyst component in advanced polymer systems, offering enhanced thermal stability and mechanical properties. It is primarily utilized by manufacturers in the electronics, specialty plastics, and high-temperature resin industries seeking to improve product durability and performance.

Application

• Cross-linking agent for epoxy resins in electronic encapsulants and underfill materials.
• Catalyst or co-catalyst component in polymerization reactions for high-performance engineering plastics.
• Additive for flame-retardant polymers, leveraging boron's char-forming properties.
• Precursor for boron-containing ceramic materials used in high-temperature applications.
• Modifier for silicone resins to enhance thermal and oxidative stability.
• Intermediate in organic synthesis for pharmaceuticals and agrochemicals.
• Component in adhesive formulations requiring high heat resistance.

Basic Information

Item	Details
Product Name	2,4,8,10-Tetraoxa-3,9-Diboraspiro[5.5]Undecane, 3,9-Bis(4-Methylphenyl)-
CAS No.	7091-41-0
Molecular Formula	C19H22B2O4
Molecular Weight	344.00 g/mol
Synonyms	3,9-Bis(4-methylphenyl)-2,4,8,10-tetraoxa-3,9-diboraspiro[5.5]undecane; Bis(4-methylphenyl) Spiroborate; p-Tolyl Spiroborate; Spiroborate Ester; Aromatic Spiroborate; Boron Spirocyclic Ester; Bisphenol A Borate (analog); Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 2,4,8,10-Tetraoxa-3,9-Diboraspiro[5.5]Undecane, 3,9-Bis(4-Methylphenyl)- adheres to a rigorous quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and FTIR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under dry conditions, preferably with a desiccant, to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	< 10 ppm

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