Phosphoric Acid 45%

⚖️ Legal / Purchase Notice (UK):

This product (Phosphoric Acid 45%) is a high-strength corrosive chemical supplied for business and professional use only.

Available to Business & Trade Customers Only
We may require business verification details prior to dispatch.

Customer Declaration Required:

• Limited Company
• Sole Trader
• Private Customer – I understand this order will be cancelled and a £10 restocking fee will apply

Company Registration Number / UTR required

✔ Supplied for professional / industrial applications only
✔ Not intended for general consumer use due to concentration
✔ Private users should purchase lower concentration alternatives (e.g. 29.95% or 20%)

PHOSPHORIC ACID 20% - private user

PHOSPHORIC ACID 29.95%  - private user

📄 Product Overview:
Premium Phosphoric Acid 45% Solution, supplied in UN approved fluorinated HDPE bottles for superior chemical safety and durability. This high-strength acid is ideal for industrial descaling, rust removal, metal preparation, and laboratory applications. Available in 500ml, 1L, and 2L (2 × 1L) sizes to suit all operational needs.

⚙️ Key Features:

1. ✅ 45% concentration – strong formulation for professional and industrial use.

2. 🧴 Fluorinated HDPE bottles – exceptional chemical resistance for long-term storage.

3. 🔒 UN approved packaging – ensures safe and compliant transport.

4. ⚗️ High-purity acid – suitable for research and manufacturing environments.

5. 🌍 Corrosion-resistant containers – prevents leakage and degradation over time.

🧰 Uses:

1. Rust removal and corrosion cleaning from metal surfaces.

2. Industrial descaling of boilers, tanks, and piping.

3. Laboratory reagent for chemical analysis and titration.

4. Surface treatment and phosphate coating preparation.

5. pH adjustment and neutralisation in controlled industrial processes.

📋 Product Details:

• Weight: 500ml / 1L / 2L (2 × 1L)

• Grade: Industrial & Laboratory Grade (45% concentration)

• Form: Liquid Solution

• Packaging: UN Approved Fluorinated HDPE Bottle

• CAS Number: 7664-38-2

📈 Other Names:
Orthophosphoric Acid 45%, Phosphoric Acid Solution 45%, H₃PO₄ 45%, Rust Remover Acid, Phosphate Solution, Metal Prep Acid

High-ranking keywords: phosphoric acid 45% solution, buy phosphoric acid UK, H3PO4 45% cleaner, phosphoric acid rust remover, industrial phosphoric acid, orthophosphoric acid 45%, phosphoric acid descaler

🧪 How to Use Phosphoric Acid 45% (Step-by-Step):

1. Rust Removal / Metal Cleaning:

• Dilute 100ml Phosphoric Acid 45% with 900ml water (always add acid to water).

• Apply solution to rusted metal surface using a brush or sponge.

• Allow contact for 10–20 minutes, depending on severity.

• Rinse thoroughly with clean water and dry metal before coating.

2. Industrial Descaling:

• Prepare 1 part acid to 4 parts water.

• Circulate through equipment for 15–30 minutes.

• Flush system thoroughly with deionised or distilled water.

3. Laboratory Reagent Preparation:

• Use for preparation of phosphate compounds or pH control experiments.

• Measure accurately using laboratory-grade equipment.

4. Surface Preparation for Coating:

• Apply diluted solution (1:5 ratio) to clean and etch metal prior to painting or coating.

• Rinse and dry completely before applying coating.

5. pH Adjustment (Industrial Processes):

• Add small increments (10–30ml per 10L) to desired solution.

• Monitor pH continuously until target level is achieved.

⚠️ Safety Precautions:

• Wear acid-resistant gloves, goggles, and face protection.

• Work in well-ventilated or controlled environments.

• Store upright in UN approved fluorinated HDPE containers.

• Do not mix with alkalis, bleach, or oxidising chemicals.

❓ Frequently Asked Questions (FAQ):

1. What makes Phosphoric Acid 45% different from 20% or 30%?
It’s a stronger concentration, ideal for heavy-duty industrial cleaning and rust removal.

2. Is the container safe for long-term storage?
Yes, it’s supplied in UN approved fluorinated HDPE bottles that resist corrosion and chemical breakdown.

3. Can I use this on stainless steel or aluminium?
Avoid direct use on aluminium. Stainless steel is generally safe, but test a small area first.

4. How long does it last in storage?
Shelf life is 2–3 years when stored sealed and away from direct sunlight.

5. Is this food-grade phosphoric acid?
No, this is industrial/laboratory grade and not for food or beverage use.