Phosphoric (V) Acid – LR Grade, 500ml (UN Approved, Restricted Item)

Phosphoric (V) Acid, also known as Orthophosphoric Acid, is supplied in a 500ml UN‑approved container and manufactured to Laboratory Reagent (LR) grade. It is a commonly used inorganic acid in educational science laboratories, suitable for controlled practical work and teacher‑led demonstrations.

Identified by CAS Number: 7664‑38‑2 and UN Number: 1805, phosphoric acid is a regulated substance and must be handled in accordance with appropriate laboratory safety procedures. Its moderate acidity and versatility make it particularly useful for teaching chemical reactions, salts, and acids with multiple dissociation stages.

Supply restrictions apply: this product is sold only to educational establishments. Phosphoric (V) Acid is a Restricted and Reportable Item under the Poisons Act 1972 and the Control of Poisons and Explosives Precursors Regulation 2023. Identity verification is required before despatch.

If verification details have not been provided within the last 18 months, an automatic verification form and ID request will be emailed after checkout. No action is required at the point of purchase; the form is supplied with the order confirmation if needed.

Due to courier and safety regulations, chemical products cannot be returned. This does not affect statutory rights.

Key Features

• Phosphoric (V) Acid (Orthophosphoric Acid)
• Laboratory Reagent (LR) grade
• 500ml UN‑approved container
• CAS No: 7664‑38‑2
• UN No: 1805
• Suitable for controlled educational laboratory use
• Restricted and reportable chemical
• Supplied only to schools and educational establishments

Ideal for School Science Lessons

Phosphoric (V) Acid is most appropriate for GCSE and A‑Level chemistry lessons, particularly where acids, salts, and reaction chemistry are explored. When used under teacher supervision and in line with COSHH risk assessments, it supports safe, curriculum‑aligned practical learning.

• Investigating acid–base reactions and neutralisation
• Studying triprotic acids and multiple dissociation stages
• Preparing and examining phosphate salts
• Comparing strengths and properties of different acids
• Reinforcing correct laboratory safety and compliance procedures

Carefully regulated and supplied exclusively for education, Phosphoric (V) Acid LR Grade is a valuable teaching reagent that supports both theoretical understanding and responsible chemical handling in