Every chrome tank on an electro plating line leaves a signature on the room around it — a fine chromic acid mist that settles on rims, ducting, light fittings and anything else within a few metres of the bath. FF-116 is a white powdered fluorocarbon surfactant that is dissolved in hot water and dosed into the chrome tank, where it spreads across the electrolyte as a thin, persistent foam layer. That layer keeps the mist where it belongs. Less chromic acid leaves as aerosol, less is carried out through the extraction, and the area around the tank stays noticeably cleaner.
The formulation is PFOS-free and holds up under the conditions that break ordinary foaming agents: bath temperature, zinc oxide in solution and continuous electrolysis. Plating shops run it on rack, barrel and continuous chrome lines, and it goes into an existing process of electroplating without altering the bath chemistry or the deposit.
On a busy line the change is quick. Air quality around the tank improves within a shift of the first charge, chromic acid consumption falls because less of it is lost up the stack, and the corrosive film that normally creeps over nearby steelwork thins out. For industrial metal plating operations that have lived with mist for years, those three effects together are usually what turns a trial into a permanent line item.
Day to day the routine is short: dissolve the powder, dose the tank, and watch the foam layer rather than the calendar.
| Appearance | White powder solid |
| Chemistry | PFOS-free fluorocarbon surface active agent |
| Function | Suppresses chromic acid mist and chromium vapour in chrome plating baths |
| Working concentration | 0.06–0.09 g/L |
| First fill | 20–30% above the normal concentration, to super-saturate the bath |
| Dissolution | Complete dissolution in hot water before the solution enters the bath |
| Replenishment | By consumption of the foam layer |
| Bath resistance | Bath temperature, zinc oxide, electrolytic conditions |
| Typical lines | Rack, barrel and continuous chrome plating |
Chrome mist is not a vapour in the usual sense. Hydrogen and oxygen bubbles burst at the surface of the electrolyte and throw up a fine spray of chromic acid solution, which then drifts through the workshop as an aerosol and settles on everything it touches. A fluorocarbon surface active agent lowers the surface tension of that solution and builds a persistent foam layer across the bath, so the droplets coalesce and drain back instead of becoming airborne.
Two things decide whether the layer survives a shift. The first is complete dissolution: powder added dry, or stirred into water that is not hot enough, sits on the tank floor as grit and never reaches the surface. The second is chemical stability, because the foam has to hold at bath temperature, in the presence of zinc oxide and under continuous electrolysis. A metal plating process imposes all three at once, and they are where cheaper foaming agents collapse.
Once the layer is established, the foam becomes the control instrument. A blanket that reaches the tank walls means the working concentration is about right; thinning at the edges, or a break in the middle, is the signal to replenish. Because the additive works at the surface and not in the deposit, it stays out of the way of the plating process underneath: bath analysis, current density and coating appearance are unchanged.
Two things usually push a metal plating shop into fitting mist control: what the air at breathing height looks like during a shift, and what the company's own EHS targets or the local authority expect to see recorded. The inhibitor works on the first of those. It lowers the concentration of chromic acid leaving the bath, which is exactly what air monitoring picks up, while extraction, PPE and routine monitoring stay in place exactly as before.
Because the active ingredient is a fluorocarbon surfactant — the class of industrial surfactants used where ordinary foaming agents break down — it brings no PFOS into the bath or into the rinse water that follows it. That matters if your wastewater treatment plant or a customer's substance list is the reason you are reviewing additives in the first place.
The visible effects show up on the shop floor before they show up in a report: less yellow-brown deposit on tank lips, hoods and light fittings; less acid attack on fixtures, jigs and overhead steelwork; and a working area that operators are willing to stand in. On a busy electro plating line this is usually obvious within a shift.
Keep a simple log of dose and air readings. It shows whether the tank is holding its foam and gives you a running record of the metal plating process to put in front of an auditor. Tell us what your compliance process asks for and we will point you to the SDS and the batch documentation that goes with the delivery.
This is a fine white powder, so the handling issue is dust at the weighing bench rather than anything dramatic in the tank. Anyone who has run a metal plating line knows how quickly an open drum turns into a solid block in a humid plating shop, so measure the charge in a ventilated area, wear the dust mask, goggles and gloves specified in the SDS, and reseal the container as soon as the charge is out. Powder that has taken up moisture cakes into lumps that dissolve slowly, which is the most common reason a batch seems not to work.
Store sealed in a cool, dry place away from direct sunlight and use the oldest stock first. Make up the hot-water solution on the day it is used; there is nothing to gain from holding a dilute stock solution, and a clearly labelled container stops it being mistaken for another liquid additive on the line.
Sweep up spills dry rather than washing them into the drain, and dispose of them under your local rules. Before the first delivery, ask our sales contact for the SDS and the transport documentation that applies in your country — labelling and storage requirements differ between markets, and the paperwork should match the one you are importing into.
Choosing the right match is where most sourcing decisions stall. As a trading supplier, we keep one point of contact from first enquiry to after-sales: tell us what you are making and the conditions you work under, and we shortlist the closest matches from our supplier network, compare specifications and arrange samples before you commit to a bulk order. If something does not behave as expected, we work with the supplying partner on the cause and a practical fix, and stay with the case until it is settled. Email, WeChat or WhatsApp enquiries get a reply within 24 hours.
None. The active component is one of the industrial surfactants we formulate without PFOS, which is the first thing most buyers check when a chrome line is being reviewed against a restricted-substance list. Ask our sales contact for the SDS so the paperwork you file matches the batch you actually receive.
Dissolve it completely in water at 80 °C or above before it goes anywhere near the tank, then add the solution to the bath at 0.06–0.09 g/L while the bath is running. For the first fill, dose 20–30% above that to super-saturate the bath; after that, replenish according to how quickly the foam layer is consumed rather than on a fixed schedule.
Yes, indirectly but reliably. Chromic acid that leaves the tank as mist is acid you have already bought, so holding it in the bath means fewer make-up additions. It also means less corrosive attack on ducting, hoods, fixtures and steelwork — a maintenance cost that rarely shows on the chemical invoice. Shops running several chrome tanks across an industrial metal plating site usually see the difference first in acid consumption, then in maintenance.
Whether you run a barrel line or a large electro plating tank, we talk you through the first charge, the super-saturation step and how to read the foam layer on your own tank, and we stay with the problem if the foam behaves differently from what you expected. Send the bath volume, the type of chrome and a photograph of the tank surface, and you will get an answer for that specific line rather than a general instruction.
No. It is a surface active agent that stays in the liquid and works at the interface with the air; it does not plate out, does not shift the chromic acid balance and does not leave a film on the work. Coating appearance, hardness and throwing power stay where they were. If you are qualifying a tank, plate a test panel before and after the first charge so you have your own record.
