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Monosodium Phosphate

An inorganic compound commonly used in water treatment, metal finishing and animal feed manufacture. In food grade format, it is a common additive.


Monosodium phosphate is one of many sodium phosphates. Some of the most common industrial applications for MSP are in water treatment, cleaning agents; it helps to sequester metal ions.

Food grade MSP holds uses in animal feeds and the production of many everyday foods, acting as a pH control agent, emulsifier and stabilising agent.

The MSP we manufacture is available as a technical or food grade material. As a liquid, it is a clear, colourless liquid with no distinguishing odour. As a solid, it is a white powder with no distinguishing odour.

CAS number
MSP, E-339, Sodium dihydrogen phosphate, Sodium phosphate monobasic, Sodium phosphate, Anhydrous monobasic sodium phosphate, Sodium acid phosphate
25kg (solid), 25L, 200L, 1000L, bulk transfer (liquid)
Chemical Formula


Animal Feed & Pet Food Chemicals

• Pet food manufacture: Emulsifier

Cleaning Chemicals & Detergents

• Detergents and cleaning agents: Sequesters ions to help in water softening

Farm & Livestock

• Animal feeds: Source of phosphorus

Food Additives

As a food grade material:

• Buffering agent and acidity regulator
• Emulsifier, texturiser, thickener and stabiliser
• Humectant (water retention agent) for processed meat
• Leavening agent in baked goods

Healthcare Chemicals

• Pharmaceuticals: pH buffer
• Nutritional supplements: Source of phosphorus

Industrial Ingredients

• Metal surface treatment and finishing
• pH control for acid-type metal cleaners

Textile Chemicals & Dyes

• Fire retardant for production of fabrics
• Paints and coatings: Buffering and chelating agent

Water Treatment

• Sequesters iron, calcium and magnesium ions to prevent scale buildup


• Cosmetics: Buffering agent to enhance stability and shelf life
• Laboratory settings: Preparation of buffer solutions

Product info download

At Airedale Group, we are an award-winning multi-service chemical partner for customers across the UK and Europe.

With over 50 years’ experience, state-of-the-art facilities and our own delivery fleet, we are a leading monosodium phosphate supplier and manufacturer.

Please note: We are unable to sell chemicals to members of the public.


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