GLYCOLS

ACURO's pre-Inhibited Propylene Glycol(s) is an inhibited propylene glycol based industrial coolant and heat transfer agent. It is a slightly hazy liquid, free of suspended solids with a slight odor. The inhibitor system is designed to protect brass, copper, solder, steel, cast iron, aluminum, and other metals commonly found in industrial cooling and heating systems. A foam inhibitor is included to minimize foaming tendencies during service.

The effectiveness of ACURO's Inhibited Glycol(s) in preventing corrosion has been proven in extensive laboratory simulated service and in actual service tests. Using ACURO's Inhibited Propylene Glycol(s) for heat transfer applications in place of brine solutions or uninhibited glycol-water solutions lowers maintenance costs and improves heat transfer. 

APPLICATIONS

Since Acuro's Inhibited Glycol(s) is formulated with propylene glycol, it is especially suitable for applications in which toxicological and environmental considerations are critical.

ACURO's Inhibited Propylene Glycol(s) is compatible and completely interchangeable with systems currently utilizing ethylene glycol based coolants.

ACURO's Inhibited Propylene Glycol(s) protects cooling systems from freezing in winter, overheating in summer, and corrosion in all seasons. Improved heat transfer and less internal corrosion contributes significantly to overall operating and maintenance costs. It is recommended as a heat transfer fluid for line heaters, ground thawing, athletic fields, grave digging, snow melting systems for loading ramps, walkways, highways, and airfield runways.

The corrosion protection provided by ACURO's Inhibited Propylene Glycol(s) and its low toxicity level as compared to other heat transfer fluids makes it an ideal transfer medium for heating, ventilation, and air conditioning (HVAC) systems as well as solar energy collection systems.

ACURO's inhibited ethylene glycol-based heat transfer fluid is manufactured under strict quality standards. Aqueous solutions of ACURO's Inhibited Ethylene Glycol are designed to provide freeze/burst and corrosion protection, as well as efficient heat transfer, in water-based, closed-loop heating and air-conditioning systems.

It has an operating temperature range of -60°F to 250°F; with fluid freeze protection to below -60°F, and system burst protection to below -100°F. The fluid contains corrosion inhibitors that are specially formulated for HVAC systems to keep pipes free of corrosion without fouling.

ACURO's product can be specified for use in new HVAC systems, or as a replacement fluid for use in existing systems. The fluid is dyed fluorescent pink to facilitate system leak detection.

ACURO's Pre inhibited Ethylene Glycol is also suitable for ice storage systems — used either in the closed circulation loop from the chiller to the storage medium; or, in solution with water, in the medium itself.

TEG is produced as a byproduct in the manufacture of MEG.
TEG is a colorless liquid with a high boiling point. It is most hygroscopic in nature, amongst Mono & Diethylene Glycols. TEG is miscible with water, alcohol , ether , acetone but is insoluble in benzene and its homologues. TEG is a stable non corrosive chemical with a high flash point. TEG finds end use in Natural Gas Dehydration , Plasticizers , Conditioning agents etc. At normal temperature and pressure, TEG can be easily transported in Mild steel tankers , internally coated with an epoxy paint. Similarly, TEG can be stored in MS containers lined with baked phenolic resin / air drying epoxy phenolic resin or vinyl resin. It is advisable to store TEG in a cool , dry place with good ventilation - away from heat, sparks or flames.
Care should be taken to prevent TEG from mixing with strong acids , bases and oxidising materials.

Applications :

1. Natural Gas Dehydration: Hygroscopic nature of TEG is put to use in dehydration of natural gas. TEG is contacted counter currently with natural gas in a packed or bubble tray to remove moisture from natural gas. TEG is subsequently regenerated for reuse by stripping it of its water content. 2.

2. Plasticizer:TEG can be effectively used as a plastisizer for Vinyls, nitro cellulose, safety glasses. Diesters of TEG gives good low temperature properties and smooth film finishes.
3. Conditioning Agent
The affinity of TEG for water is used advantageously in the manufacture of adhesives or pastes to eliminate shrinkage, curling and brittleness.

Specification :

Property Unit Specifications

1 Appearance - Clear Colourless

2 TEG Content Wt % min 99.2

3 DEG Content Wt. % max. 0.5

4 PEG Content Wt. % max. 0.25

5 Specific Gravity @20/20 Deg C 1.124 - 1.126

6 Distillation Range @ 760 mm Hg 5-95 vol% Deg C 280-295

7 Water Wt. % max. 0.1

8 Color Pt-Co Units max. 25

9 Ash Wt.ppm Max. 50

• 
  Adhesives and coatings
• Emulsifiers
• Lubricants
• Plasticizers
• Polyurethane foams
• Solvents
• Silicone compounds
• Thermoplastics
• Unsaturated polyester resins

• Aromatic and paraffinic hydrocarbons separations
• Cleaning compounds
• Cyanoacrylate and polyacrylonitrile
• Polyethylene terephthalate (PET) production equipment cleaning
• Steam-set printing inks

PG USP/EP is an important ingredient for a multitude of uses, including:

• Solvent for aromatics in the flavor-concentrate industry
• Wetting agent for natural gums
• Ingredient in the compounding of citrus and other emulsified flavors
• Solvent in elixirs and pharmaceutical preparations
• Solvent and coupling agent in the formulation of sun screen, lotion, shampoos, shaving creams and other similar products
• Emulsifier in cosmetic and pharmaceutical creams
• Ingredient for low-temperature heat-transfer fluids involving indirect food contact, such as brewing and dairy uses, as well as refrigerated grocery display cases
• Very effective humectant, preservative and stabilizer in semi-moist pet food (with the exception of cat food), bakery goods, food flavorings and salad dressings

Heat Transfer Fluids
Fragrance, Cosmetics and Personal Care
Food and Flavorings
Pet Food/Animal Feed
Pharmaceutical

Dipropylene Glycol is used as a reactive intermediate in the manufacturing of high-performance unsaturated polyester resins, polyurethanes and plasticizers. Dipropylene glycol has great solvency, a low evaporation rate, low toxicity, high viscosity and low odor, making it a chemical intermediate of choice for many applications, including:

• High-volume plasticizer
• Reactant in unsaturated polyurethane resins, adding flexibility and hydrolytic stability
• Initiator in urethane polyols, and as the polyol itself in some rigid polyurethane systems
• Reactive diluents in radiation-cured resins and coatings, cutting viscosity and enabling easier application

Other effective uses of Dipropylene Glycol are:

• Hydraulic brake fluid formulations
• Cutting oils
• Textile lubricants
• Printing inks
• Coatings
• Industrial soaps
• Solvents for agricultural chemicals such as insecticides

Urethanes
Paint and Coatings
Other Applications

PPG is used in many formulations for polyurethanes. It is used as a rheology modifier.

PPG is used as a surfactant, wetting agent, dispersant in leather finishing.

PPG is also employed as a tuning reference in mass spectrometry.