Description
Anhydrous Citric Acid USP 99.5% | Laboratory Grade
Pure Anhydrous Citric Acid for Pharmaceutical and Food Applications
Citric Acid Anhydrous (CAS No. 77-92-9, chemical formula C₆H₈O₇) is a naturally occurring weak organic acid, offered here in its anhydrous (water-free) form. This product is produced synthetically and purified to USP (United States Pharmacopeia) standards, ensuring exceptional quality and safety for pharmaceutical, food-grade, and industrial applications.
It is commonly used as a buffering agent, acidulant, preservative, and chelating agent, and plays a vital role in pH regulation and formulation across many sectors. The anhydrous form provides superior stability for dry blending and extended shelf life when you shop anhydrous citric acid from certified chemical suppliers.
Its excellent solubility in water and sharp acidic flavor make it ideal for food and beverage formulations, while in pharmaceuticals, it’s used in effervescent tablets, oral solutions, and topical products.
Pharmaceutical Buffering Applications of Anhydrous Citric Acid
The water-free form offers enhanced stability for pharmaceutical manufacturing, particularly in dry formulations where moisture content must be carefully controlled. Professional-grade anhydrous citric acid ensures consistent performance in critical applications.
For pharmaceutical buffering systems, anhydrous citric acid provides superior control in pharmaceutical pH adjustment solutions where precise acidic conditions are required. The International Pharmaceutical Excipients Council recognizes anhydrous citric acid as a critical excipient in pharmaceutical manufacturing.
Storage and Stability Characteristics
The anhydrous form demonstrates exceptional stability under proper storage conditions, maintaining its buffering capacity and chemical integrity over extended periods. Proper handling protocols ensure optimal performance for laboratory and industrial chemical applications.
Technical Specifications and Quality Parameters
Product Specifications
| Property | Specification |
|---|---|
| Chemical Name | Citric Acid (Anhydrous) |
| CAS Number | 77-92-9 |
| HS Code | 2918.14.00 |
| Purity | 99.5% |
| Appearance | Colorless Crystals or White Granular to Fine Crystalline Powder |
| Odor | Odorless |
| Grade | USP |
| Molecular Formula | C₆H₈O₇ |
| Molecular Weight | 192.12 g/mol |
| Melting Point | 153 °C |
| pH (1% Solution) | ~2.2 |
| Solubility | Freely Soluble in Water and Alcohol |
| Shelf Life | 5 Years |
Distribution and Packaging Solutions
Packaging Options: 500g HDPE bottles, 1kg sealed containers, 25kg bags or drums, bulk laboratory packaging
Available for immediate shipping across South Africa, SADC regions, and international markets through our laboratory chemical distribution network.
Industrial and Laboratory Applications
- Acidulant & Preservative in Food & Beverages
- pH Adjuster in Cosmetics & Personal Care Products
- Buffering & Effervescence Agent in Pharmaceuticals
- Cleaning Agent in Biochemical and Industrial Formulations
- Chelating Agent for Metal Ion Control
The United States Pharmacopeia maintains rigorous standards for anhydrous citric acid quality, ensuring pharmaceutical manufacturing compliance and analytical accuracy in laboratory applications.
