Diethylene glycol , DEG

Properties of Diethylene glycol (DEG):

• Chemical Formula: C4H10O3
• Molecular Weight: 106.12 grams per mole
• Boiling Point: Approximately 245°C
• Viscosity: Slightly viscous
• Solubility: Water-soluble and miscible with ethers, lower aliphatic alcohols, aldehydes, and ketones; partially soluble in benzene, carbon tetrachloride, monobenzene, orthodichlorobenzene, and toluene
• Toxicity: DEG has a sweet taste and is potentially toxic if ingested, emphasizing the importance of handling it with proper safety precautions.
• Hygroscopicity: DEG has a high affinity for water, making it an effective humectant and antifreeze agent.
• Freezing Point: Approximately -10°C, making it suitable for use as an antifreeze or coolant in applications where low-temperature stability is required.

Uses of Diethylene glycol (DEG):

1. Textile Industry: DEG is widely used as a solvent in textile dyeing and printing processes, helping in dispersing and carrying dyes, enhancing color intensity and uniformity.
2. Adhesives and Resins: DEG is employed as a solvent and viscosity modifier in the formulation of adhesives and resins, contributing to improved flow, adhesion, and workability of these products.
3. Paints and Coatings: DEG finds application in the production of paints, varnishes, and coatings as a solvent and humectant. It helps maintain the desired consistency, prevents drying or hardening, and enhances the durability and appearance of the final coating.
4. Personal Care Products: DEG can be found in certain cosmetics and personal care products, such as moisturizers, lotions, and shampoos, where it acts as a humectant, helping to retain moisture and improve product stability.
5. Antifreeze and Coolants: DEG is utilized as an antifreeze agent in automotive engine coolants and heating, ventilation, and air conditioning (HVAC) systems. Its low freezing point and heat transfer properties help prevent freezing and provide effective cooling.
6. Pharmaceutical and Chemical Processes: DEG serves as a solvent, catalyst, or reaction medium in various pharmaceutical and chemical processes, facilitating the synthesis and purification of pharmaceutical compounds and specialty chemicals.
7. Polyester Resins: DEG is an intermediate in the production of unsaturated polyester resins, which are used to make durable plastics and coatings.
8. Plasticizers: DEG enhances flexibility and durability in plastics, especially PVC.
9. Solvent Applications: Acts as a solvent for dyes, inks, and adhesives.
10. Tobacco Industry: DEG acts as a humectant in cigarette and tobacco manufacturing.