Citric Acid (50%)
Citric Acid 50% Solution
Chemical name: Citric acid, aqueous solution
Synonyms: 2-hydroxy-1,2,3-propane-tricarboxylic acid solution
CAS number: 77-92-9 (anhydrous citric acid)
EC number: 201-069-1
Formula: C6H8O7
Molecular weight: 192.12 g mol-1 (anhydrous basis)
Product Specification
| Concentration | 50% w/w citric acid in water |
| Appearance | Clear, colourless to pale yellow liquid |
| Odour | Odourless to faint |
| pH (20 °C, 1% solution) | ~2.0 |
| Density (20 °C) | ~1.23 g mL-1 |
| Solubility | Fully miscible with water |
Applications
- pH adjustment and buffering in aqueous formulations
- Descaling and limescale removal (chelating action)
- Biodegradable alternative to stronger mineral acids
- Chelating agent for metals in cleaning and detergent systems
- Food additive (when supplied as food grade)
Industries
- Cleaning & Hygiene — descalers, surface cleaners, dishwashing formulations
- Food & Beverage — preservative, flavour enhancer, acidity regulator (E330)
- Cosmetics & Personal Care — pH regulator in creams, gels, shampoos
- Industrial & Institutional — metal cleaning, water treatment
- Laboratory & Pharma — buffer component and intermediate
Packaging & Storage
Available in 5 L, 25 L, 200 L drum and 1 000 L IBC formats.
Store in tightly closed containers at 5–30 °C. Protect from freezing and direct sunlight.
Shelf life: 12 months from manufacture date under recommended storage conditions.
Safety & Regulatory
Classified as Eye Irritant, Category 2 under UK-CLP regulations.
Hazard statements: H319 – Causes serious eye irritation.
Transport: Not classified as dangerous for transport.
Use with standard laboratory/production PPE: gloves, goggles, protective clothing. Avoid inhalation of mist.
Refer to the current Safety Data Sheet (SDS) for full handling, storage and disposal guidance.
For bulk supply, technical documentation or private-label enquiries, please contact the Innovation Chem technical service team.