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AMERSTAT 25 - Microbiocide Fuel Treatment

Description

AMERSTAT 25 microbiocide fuel treatment is highly effective in providing total control against biodegradation of distillate fuel in storage tanks. Moisture often accumulates in storage tanks from condensation and water ingress from drains and vents, providing an excellent breeding ground for two major groups of microorganisms - bacteria and fungi. Living at the fuelwater interface, these damaging microbes depend on water for growth and the organic molecules of fuel for nutrition.

Uncontrolled microbial contamination will grow quickly and often undetected, leading to unexpected problems including clogged filters and injectors, storage tank corrosion, fuel instability and a reduction of the fuel’s heat of combustion. Additionally, sulphur-containing molecules are metabolized leading to the production of hydrogen sulphide. AMERSTAT 25 treatment will control microbiological growths in storage tanks and fuel lines, maintaining the fuel’s stability and reducing system corrosion and clogging resulting from infestation. AMERSTAT 25 treatment has multiple applications in marine diesels and gas turbines, auxiliary boiler systems, and fuel storage tanks.

Application and Use

Because the bacteria and fungi live in the water phase at the fuel-water interface, AMERSTAT 25 treatment has been formulated to be oil soluble and to have a specific gravity greater than water. AMERSTAT 25 treatment will disperse completely in the fuel oil and exhibits a “partitioncoefficient” characteristic to seek the water phase, providing effective control against microbiological growth.

Ideally, AMERSTAT 25 treatment should be fed to the water bottoms. This can be achieved by feeding through a water bottom drain valve or pouring down a sounding pipe prior to refilling the tank. If feeding to the bottom is not practical, it can be slug fed through the tank top ports or fed continuously during the filling operations. Specific feeding points and schedules can be recommended by your Drew Marine service engineer for your particular application. The dosage of AMERSTAT 25 treatment will depend on a number of factors, such as the type of system being treated, the nature and extent of microbial contamination, and the degree of control required. Generally, the dosage will be 1:25,000 (1 liter per 25 tons of fuel). For initial cleaning of contaminated systems previously untreated, 1:12,500 (1 liter per 12.5 tons of fuel) is recommended for the initial treatment; thereafter, for routine control of bacteria the maintenance dosage is recommended. As microbes are effectively killed, the active biocidal components of AMERSTAT 25 treatment are depleted. Therefore, it is recommended to treat the fuel again during each fuel loading or after six months from the previous treatment, whichever occurs first.

AMERSTAT 25 - Microbiocide Fuel Treatment

Distillate Fuel Treated

Typical Physical Properties

Appearance: Amber liquid

Odor: Organic

Specific Gravity at 25° C (77° F): 1.09

Flash Point (PMCC): 93.3° C (200° F)

pH (1% aqueous solution): 6.5

Solubility: Complete

Storage: Avoid heating > 60° C

(140° F) or freezing

Packaging

AMERSTAT 25 microbiocide fuel treatment is available in 25-liter containers.

Important Information

Ashland maintains Material Safety Data Sheets on all of its products. Material Safety Data Sheets contain health and safety information for your development of appropriate product handling procedures to protect your employees and customers.

Our Material Safety Data Sheets should be read and understood by all of your supervisory personnel and employees before using Ashland products in your facilities.