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NEVER AGAIN!
Get rid of sludge and scale, yearly boiler cleaning, with
VERSENE100 More than two years of test results confirm the ability of Versene® 100 chelating agent to prevent the formation of scale in many types of boilers. The test showed an over-all saving of 30% in costs over the previous year's operation. By continuously treating boiler water with a sufficient amount of Versene 100 to inactivate the hardness of the make-up water, boilers remain bare-metal clean! Scale and sludge are no problem. Heat transfer efficiency is constant. Gas to steam ratio shows no increase. Downtime for cleaning is minimized. Versene 100 chelating agent is a concentrated
aqueous solution of the tetrasodium salt of ethylenediaminetetraacetic acid (Na4EDTA). It presents no handling problem. It can be added to the boiler feed water stream by any convenient method. And it has an important advantage over phosphate scale prevention agents that deposit a portion of the calcium and magnesium salts they form. The products of the internal treatment of Versene 100 are completely soluble and can be removed by blowdown. For full information on this method of turning annual boiler overhauls into routine inspections, return the coupon on the opposite page.
Versene 100 solves other processing and product problems, t o o . . . Examine your own processing or product problem. Are metal ions the real cause of the trouble? If so, a Versene chelating agent may solve it at the source!
Metal cleaning and finishing. For surface oxide removal; as a dip rinse between finishing operations; or at various stages in barrel tumbling, burnishing, plating operations.
Chelating agents control metal ions by blocking the reactive sites of the ion and preventing it from entering into undesirable reactions. Dow Technical Sales and Service representatives have a broad experience in the use of chelating agents for this purpose. They are available to help you use this technique to prevent such undesirable side effects as: insoluble precipitates, deposition of scale and sludge; unwanted catalytic side effects; oxidative breakdown and spoilage of organic materials; instability in emulsion systems; interference with processing steps such as bleaching, dyeing, plating, finishing. A partial list of applications for Versene show the extent of this versatility:
Foods, pharmaceuticals, biologicals. To prevent metal-catalyzed oxidative breakdowns.
Agriculture. For chelating metal ions in fertilizers and aqueous chemical sprays. Cosmetics. To prevent spoilage or hydrolysis caused by metal ions in organic base preparations; to stabilize formulations; and to improve appearance and effectiveness.
Rubber and polymer chemistry. To promote more uniform polymerization rates; to prevent breakdown, discoloration, poor heat and light stability in polymer systems; to stabilize aqueous resin emulsions. Textile processing. To control metal ions in all stages of textile processing—scouring, bleaching, dyeing, color stripping. Soaps and detergents. To control hardness of water; to improve the effectiveness, appearance, stability of soaps and detergents. In short, if you have a finished product or processing problem where metal ions cause uneconomical processing difficulties, or improperly functioning products with lowered sales appeal —investigate Versene chelating agents.
THE DOW CHEMICAL COMPANY
DOW
Midland, Michigan
The Dow Chemical Company, Abbott Road Buildings, Midland, Michigan Attn. Chemicals Merchandising Department 651AJ6-11
Technical service For technical assistance in your specific problem area, or complete details on the properties and economics of Versene, describe your process or product problem in this coupon. Or call your nearest Dow sales office.
Please send complete details on Versene 100, including booklet(s): • Prevention with Versene 100"; • "Keys to Chelation." My problem is:
Name_
_Title_
Company_ Address_ City
_Zone_
_State_
"Boiler Scale
