Find High-Quality Fiberglass Ferric Chloride Storage Tanks

Ferrics, Alums & Polymers Guidelines

Ferric Chloride is used as an etchant for copper-based metals (such as those found in printed circuit boards) and stainless steel. When used in anhydrous form, it serves as a drying agent in certain reactions. Aluminum sulfate is used in the dyeing and printing textiles market. Both are used as coagulants in treating sewage and drinking water followed by Polymers which make the flock larger.

What Should You Look for in Ferric Chloride Storage Tanks?

Ferric chloride storage tanks must be built from corrosion-resistant fiberglass reinforced plastic (FRP), since ferric chloride is highly corrosive and can degrade metal or unsuitable plastic tanks over time. The right resin selection — matched to concentration and operating temperature — is critical to ensuring long-term tank integrity and safe storage.

Belding Tank’s ferric chloride storage tanks are engineered with isophthalic polyester or Derakane vinyl ester resin systems depending on temperature range, T-316 stainless steel bolting, and EPDM gaskets, giving water treatment and industrial facilities a reliable, long-lasting storage solution across a wide pH range.

Although the chemicals being stored may discolor the tank making it not so attractive, the potentially corrosive materials are why fiberglass tanks are used. Built for the corrosion market, fiberglass tanks provide a great means for the storage and processing of these potentially corrosive chemicals handling a wide pH range.

While fiberglass may stand up well to these chemicals, humans should always take precaution when working in and around this environment.

Product Storage

Ferrics Chloride and Aluminum Sulfate Tanks

Technical Data

Resin:

Concentration %	Temperature¹	Resin
All	≤ 150° F.	Isophthalic Polyester
All	> 150° F. to ≤ 170° F.	Derakane 411 / Isophthalic Polyester
All	> 170° F.	Derakane 411

1. If there is a chance that the tank may be used to store a different chemical later, Belding Tank recommends using Derakane 411 vinyl ester resin in the corrosion barrier and isophthalic polyester resin in the structural layers even if temperatures are below 150° F.

Veil:

Single C-Glass

Catalyst:

Co/MEKP (Cobalt Octoate / Methyl Ethyl Ketone Peroxide)

Cure:

No post cure required.

Tank Exterior:

If the tank is to be located outdoors:

Each tank has U.V. inhibitor in the exterior resin layer.
Gel coat may be added as an option.

Fittings:

Belding Tank uses only Integral (neck and flange face molded together) flanged nozzles.

Bolting Material: T-316 S.S. Standard

Gasket Material: EPDM Standard

Venting:

Unless otherwise noted, all tanks are designed for atmospheric pressure only.

Belding Tank recommends the vent be equal to or larger than the largest inlet or outlet fitting.

Plumbing to the tank:

Use of flexible connections resistant to sodium hypochlorite –

Allows for lateral and vertical expansion and contraction of the tank
Reduces pump and piping vibration stress on the tank

NOTE: Flexible Connections should be connected to the tank flange. Piping, valves and pumps must have structural support independent of the tank.

FAQs:

What sizes are available for ferric chloride storage tanks?

Belding Tank offers ferric chloride storage tanks in 22 different diameters and sidewall lengths in one-inch increments, achieving gallon capacities up to 60,000 gallons for shop-fabricated tanks and 100,000 gallons for field-assembled tanks. This range of configurations allows facilities to size a tank to their exact storage and space requirements.

How long do fiberglass ferric chloride storage tanks last?

Fiberglass (FRP) tanks are built to resist the corrosive nature of ferric chloride far longer than metal alternatives, since the resin and glass construction won't degrade the way metal does when exposed to a wide pH range. With the correct resin selected for the chemical's concentration and operating temperature, Belding Tank's ferric chloride tanks are engineered for long-term, low-maintenance service life.

Can ferric chloride storage tanks be customized for specific facility needs?

Yes — Belding Tank manufactures tanks in a wide range of shapes, sizes, and configurations, so ferric chloride storage tanks can be tailored to a facility's footprint, capacity, and installation requirements. Options include vertical or horizontal orientation, various fitting and manway configurations, and resin systems matched to the specific temperature and concentration of the stored chemical.

Ferrics, Alums & Polymers storage Tanks