1,4-Butanediol

Overview

1,4-Butanediol (BDO) is an organic compound widely used in industrial applications. It is a key intermediate in the production of various polymers, including polyurethanes and polybutylene terephthalate (PBT). BDO is also utilized as a solvent and in the manufacture of elastic fibers like spandex. Its versatility and relatively low toxicity make it a valuable chemical in multiple industries. BDO is produced through several methods, including the Reppe process, which involves the reaction of acetylene with formaldehyde. Advances in catalytic hydrogenation have also improved the efficiency of BDO production, making it more cost-effective for large-scale industrial use.

Physical and Chemical Properties

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1,4-Butanediol is a colorless, viscous liquid with a mild, sweet odor. It has a high boiling point of 235°C and a melting point of 20.1°C, which allows it to remain stable under a wide range of temperatures. The compound is hygroscopic, meaning it readily absorbs moisture from the air, and is miscible with water, alcohols, and ketones. Chemically, BDO is a diol, containing two hydroxyl groups that make it reactive in polymerization processes. Its molecular structure provides flexibility and durability to the polymers it forms, such as polyurethanes, which are known for their elasticity and resistance to wear and tear.

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Main Applications

The primary use of 1,4-Butanediol is in the production of polyurethanes, which are found in foam insulation, automotive parts, and footwear. BDO is also a critical component in the manufacture of elastic fibers like spandex, used in clothing and medical textiles. Additionally, it serves as a solvent in industrial cleaning applications and as a precursor for gamma-butyrolactone (GBL), a chemical used in pharmaceuticals and agrochemicals. In the automotive industry, BDO-derived polymers are valued for their lightweight and durable properties, contributing to fuel efficiency and reduced emissions. The compound's versatility extends to the electronics sector, where it is used in the production of circuit boards and other components.

Safety and Storage

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While 1,4-Butanediol is considered low in toxicity, proper safety measures must be observed to prevent health risks. Inhalation or skin contact can cause irritation, and prolonged exposure may lead to more severe effects. Personal protective equipment (PPE), such as gloves and goggles, should be worn when handling BDO. Storage conditions are critical to maintaining the integrity of BDO. It should be kept in a cool, dry, well-ventilated area away from ignition sources and incompatible materials like strong oxidizers. Containers must be tightly sealed to prevent moisture absorption and contamination.

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B2B Procurement Guide

When procuring 1,4-Butanediol for industrial use, buyers should prioritize suppliers with a proven track record of quality and compliance. Key factors to consider include the purity level of BDO, which typically ranges from 99.5% to 99.9%, and the packaging options available, such as drums or bulk containers. It is advisable to request certificates of analysis (CoA) and material safety data sheets (MSDS) from suppliers to ensure product specifications meet industry standards. Additionally, buyers should evaluate logistical considerations, such as transportation and storage requirements, to minimize costs and ensure timely delivery.

Overview

Physical and Chemical Properties

Main Applications

Safety and Storage

B2B Procurement Guide

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