Name: Phosphoric Acid 85%
SKU: 69379e1b55ec03dc96609130
Availability: InStock

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Phosphoric Acid 85%

Phosphoric Acid 85% is a clear, colourless to slightly viscous liquid widely used in food processing, water treatment, metal finishing, fertilizers, and industrial chemical production. Known for its moderate acidity, safety compared to strong mineral acids, and excellent buffering properties.

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Key Characteristics

Chemical Name: Phosphoric Acid
Chemical Formula: H₃PO₄
Appearance: Clear, colourless to slightly hazy viscous liquid
Odour: Odourless
Common Concentration: 85% w/w (commercial grade)
Density: Approx. 1.70 g/cm³ (at 20°C)
Melting Point: 21°C (solidifies at cooler temperatures)
Boiling Point: Decomposes before boiling; ~158°C at atmospheric pressure
Solubility: Completely miscible with water
Stability: Stable under normal conditions; hygroscopic
Hazard Nature: Corrosive; can cause skin/eye burns at high concentration

Functional Properties

Moderate-strength mineral acid with excellent buffering capacity
Effective scale remover and metal cleaner
Provides phosphorus nutrient for fertilizers
Acts as a pH regulator in food and industrial processes
Non-volatile and safer to handle compared to strong acids
Used as a rust converter and passivation agent

Common Applications
Food & Beverage

Acidulant in soft drinks (especially cola beverages)
pH control in food processing
Additive for flavour enhancement and preservation

Water Treatment

Controls scaling and corrosion in cooling towers and boilers
Precipitates metals and adjusts pH levels
Used in phosphate-based corrosion inhibitors

Fertilizers

Raw material for phosphate fertilizers (DAP, MAP, TSP)
Source of P₂O₅ nutrient for agriculture

Metal Treatment & Surface Preparation

Removes rust and scale from metals
Used in phosphating before painting or coating
Rust converter in automotive and metal industries

Industrial Chemicals

Precursor for detergents, water treatment chemicals, and specialty phosphates
Used in cleaning formulations, pickling, and descaling

Advantages

High purity and consistent performance
Moderately strong acid yet safer than nitric or hydrochloric acid
Excellent pH control and buffering capacity
Versatile applications across food, industrial, water, and agricultural sectors
Non-volatile and low fuming for safer handling
Efficient rust and scale remover with minimal harmful by-products

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Phosphoric Acid 85%

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