FC-14.5-M
Equipment Cleaner
Ingredients
| Ingredient | INCI / Chemical Name | % w/w | Function |
|---|---|---|---|
| Water | Aqua | 82.0 | Solvent carrier |
| Phosphoric acid (75%) | Phosphoric acid | 8.0 | Acidulant, scale/rust removal |
| C9-C11 alcohol ethoxylate (8 EO) | C9-11 pareth-8 | 3.0 | Nonionic surfactant, detergency |
| Citric acid | Citric acid | 2.5 | Chelant, buffering |
| Propylene glycol butyl ether | PPG-2 butyl ether | 3.0 | Solvent, grease cutting |
| Sodium alkylbenzene sulfonate | Sodium dodecylbenzene sulfonate | 1.0 | Anionic surfactant boost |
| Corrosion inhibitor (benzotriazole) | 1H-Benzotriazole | 0.3 | Copper/brass protection |
| Xanthan gum | Xanthan gum | 0.2 | Rheology modifier |
| Total | 100.0 |
Formulation Notes
Machinery and production-line cleaning in industrial settings often requires removal of mixed soils including lubricating greases, metal fines, and oxidation films. An acidic cleaner at pH 2-3 using phosphoric acid provides simultaneous detergency and light derusting action, while remaining compatible with stainless-steel equipment that would be attacked by stronger mineral acids .
Procedure. Dissolve citric acid and xanthan gum in water. Add phosphoric acid slowly with cooling (exothermic addition; do not exceed 45°C). Add the alcohol ethoxylate and propylene glycol butyl ether. Dissolve sodium alkylbenzene sulfonate separately in a small portion of water and add. Introduce benzotriazole last; mix until homogeneous.
Specifications. pH (neat): 2.5 ± 0.2; pH (1% solution): 2.8 ± 0.2; active matter: 12% ± 0.5%; specific gravity: 1.03 ± 0.01.
Application. Use at 2-5% for general equipment cleaning; 10-20% for heavy scale or rust films. Contact time: 2-5 minutes. Rinse with potable water. Safe on 300-series stainless steel and most ceramics; avoid prolonged contact with carbon steel, aluminum, and zinc-coated surfaces .
GHS Classification. Skin Corrosion Category 1B (H314); Signal word: DANGER. Phosphoric acid at ≥ 25% concentration carries Skin Corrosion Sub-category 1B classification under CLP ; this formulation contains 8% phosphoric acid (75% grade = 6% active acid, below the 10% threshold for Category 1). However, when classified as a mixture, the combination with citric acid yields Skin Irritation Category 2 (H315) and Eye Damage Category 1 (H318). Required PPE: chemical-resistant gloves, eye protection, chemical-resistant apron.