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CBDA (1,2,3,4-Cyclobutanetetracarboxylic Dianhydride) - CAS: 4415-87-6, 98% Purity, Kilogram-Scale Supply

2026-07-21 10:04:47
Product Overview

1,2,3,4-Cyclobutanetetracarboxylic dianhydride (commonly abbreviated as CBDA, CAS: 4415-87-6) is a premier alicyclic polycarboxylic dianhydride monomer. It serves as an indispensable backbone molecule in the synthesis of Colorless Polyimide (CPI) films, LCD/OLED liquid crystal alignment layers, specialized optical resins, and next-generation low-dielectric polymer matrices tailored for high-frequency copper-clad laminates (5G/6G CCL).

CBDA (1,2,3,4-Cyclobutanetetracarboxylic Dianhydride)

Due to its rigid, four-membered alicyclic ring structure that entirely lacks aromatic conjugation, CBDA effectively disrupts the formation of inter-chain Charge Transfer Complexes (CTC). This characteristic grants downstream polymer materials an industry-leading combination of optical clarity, near-zero Yellowness Index (Y.I.), remarkable thermal dimensions (high Tg), and ultra-low dielectric constants. Through our proprietary multi-stage crystallization and purification technology, we maintain stable 98% purity ready stock on a kilogram-scale (kg-scale) to fulfill your needs from initial laboratory trials to commercialized production.
Core Advantages

  • High Polymerization Purity (≥ 98.0%): Refined via specialized high-vacuum fractional distillation and precision recrystallization. Free carboxylic acids, ring-opened impurities, and trace chloride/metal ion contaminants are strictly restricted to ensure stable molecular weight growth and defect-free film formation during polymer synthesis.

  • Stable Kilogram-Scale Capacity: Supported by a dedicated pilot production facility and a robust raw material supply chain. We bypass the single-gram constraints of traditional chemical catalog retailers, supporting flexible, bulk purchases from hundreds of grams to continuous multi-kilogram batches.

  • Moisture-Barrier Zero-Degradation Packaging: Cyclic dianhydrides are highly hygroscopic and hydrolyze rapidly upon exposure to moisture. To prevent this, all products are packed inside ultra-dry, high-purity nitrogen-flushed environments using vacuum-sealed, multi-layer high-barrier aluminum foil bags.

  • Rigorous Quality Management: Produced under strict quality control standards. Every single batch is shipped alongside a complete analytical portfolio including a COA (Certificate of Analysis), HPLC (Purity), H-NMR, and Fourier-transform infrared spectroscopy (FT-IR) charts.

Technical Specifications

  • Chemical Name: 1,2,3,4-Cyclobutanetetracarboxylic dianhydride / CBDA

  • CAS Registry Number: 4415-87-6

  • Molecular Formula: C₈H₄O₆

  • Molecular Weight: 196.11

  • Melting Point: 230 – 234 °C

  • Appearance: White to off-white crystalline powder.

  • Assay / Purity: ≥ 98.0% (HPLC)

  • Standard Packaging: 250g/bag, 500g/light-proof bag, 1kg/aluminum foil bag (Customized multi-layer vacuum packaging available upon request).

Disclaimer
All chemical products sold by our company are intended solely for laboratory research, export, polymer process engineering, or industrial manufacturing R&D. They are not intended for use as food additives, cosmetic raw materials, or clinical drugs in humans.


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