Phosphoric Acid Descaler Rust Remover 45% Safe On Metal Surfaces

Description

5 LITRE PHOSPHORIC ACID DESCALER RUST REMOVER 45%

Phosphoric acid may be used to remove rust by direct application to rusted iron, steel tools, or other surfaces.

The phosphoric acid changes the reddish-brown iron oxide.

Multiple applications of phosphoric acid may be required to remove all rust.

Among many applications, phosphoric acid is used:

• As a solution for anodizing
• As an external standard for phosphorus-31 Nuclear magnetic resonance (NMR).
• As a buffer agent in biology and chemistry; For example, a buffer for high-performance liquid chromatography.
• As a chemical oxidizing agent for activated carbon production, as used in the Wentworth Process.[15]
• As the electrolyte in phosphoric acid fuel cells.
• With distilled water (2–3 drops per gallon) as an electrolyte in oxyhydrogen generators.
• As a catalyst in the hydration of alkenes to produce alcohols, predominantly ethanol.
• As an electrolyte in copper electropolishing for burr removal and circuit board planarization.
• As a flux by hobbyists (such as model railroaders) as an aid to soldering.
• In compound semiconductor processing, phosphoric acid is a common wet etching agent: for example, in combination with hydrogen peroxide and water it is used to etch InGaAs selective to InP.[16]
• Heated in microfabrication to etch silicon nitride (Si3N4). It is highly selective in etching Si3N4 instead of SiO2, silicon dioxide.[17]
• As a cleaner by construction trades to remove mineral deposits, cementitious smears, and hard water stains.
• As a chelant in some household cleaners aimed at similar cleaning tasks.
• In hydroponics pH solutions to lower the pH of nutrient solutions. While other types of acids can be used, phosphorus is a nutrient used by plants, especially during flowering, making phosphoric acid particularly desirable.
• As a pH adjuster in cosmetics and skin-care products.[18]
• As a dispersing agent in detergents and leather treatment.
• As an additive to stabilize acidic aqueous solutions within a wanted and specified pH range.
• As a sanitizing agent in the dairy, food, and brewing industries

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