Name: China Factory Supply High Quality Good Price Citric Acid Monohydrate CAS 5949-29-1
Brand: Wuhan Fortuna Chemical Co., Ltd.

Specifications of Citric Acid Monohydrate CAS 5949-29-1 Wholesale & Bulk

Items	Specifications	Results
Appearance	Colorless or white crystal	Qualified
Identification	Pass test	Pass test
Assay(%)	99.5% ~ 100.5%	99.9%
Moisture	7.5-9.0%	8.69%
Sulphated ash	≤0.1%	0.02%
sulphate	≤150 ppm	＜20 ppm
oxalate	≤360 ppm	＜20 ppm
Readily carbonizable substances	Not exceeding standard	K≤1.0
Aluminium	≤0.2 ppm	＜0.2 ppm
Arsenic	≤1 ppm	＜0.1 ppm
Mercury	≤1 ppm	＜0.1 ppm
Lead	≤0.5 ppm	＜0.5 ppm
Tridodecylamine	/	＜0.1 ppm
Bacherial endotoxins	≤0.5 IU/mg	＜0.5 IU/mg
Conclusion	The product is in conformity with BP2025.

Parameters of Citric Acid Monohydrate CAS 5949-29-1

Product parameters
Cas number:	5949-29-1
Appearance:	Colorless crystal
Purity:	99.5%min
Package details:	25kg/bag
Brand:	Fortunachem

Citric acid monohydrate is the most common form of citric acid found and used commercially. It is a weak organic acid that occurs naturally in citrus fruits like lemons and limes, but the industrial version is typically produced through the microbial fermentation of sugars.

The key term "monohydrate" means that for every molecule of citric acid, it has one molecule of water (H₂O) attached to its crystal structure. This water is not merely a mixture; it is an integral part of the crystalline form.

Key Characteristics

Chemical Formula: C₆H₈O₇ · H₂O (Often written as C₆H₈O₇ for simplicity, but the water content is crucial for its physical properties).
Appearance: Colorless, odorless crystals or a white, crystalline powder.
Taste: It has a strongly sour and acidic taste.
Solubility: Highly soluble in water.

How is it Different from Anhydrous Citric Acid?

The other main form is anhydrous citric acid ("anhydrous" means "without water").

Citric Acid Monohydrate: Contains about 7.5-9% water by weight. It crystallizes from a cold water solution.
Anhydrous Citric Acid: Contains no water of crystallization. It is produced by heating the monohydrate form to above 36.5°C, which drives off the water molecule.

The choice between the two forms often depends on the manufacturing process. The monohydrate form is more stable under typical storage conditions and is perfectly suitable for most applications where water content is not a critical issue.

Common Uses and Applications

Citric acid monohydrate is an extremely versatile compound with a wide range of uses, primarily driven by its properties as an acidulant, chelator, and preservative.

Food and Beverage Industry (as E330):

Acidulant: Provides a sharp, sour taste to soft drinks, candies, and jams.
Preservative: Its low pH creates an environment where harmful bacteria and molds struggle to grow.
Antioxidant: Helps prevent the browning and spoilage of fruits and vegetables.
Flavor Enhancer: Balances sweetness and enhances fruit flavors.

Cleaning Products:

Descaling Agent: Effectively removes limescale from kettles, coffee makers, and boilers because it chelates (binds to) the calcium and magnesium ions in hard water.
Chelating Agent: Used in detergents and soaps to soften water and improve cleaning efficiency.

Pharmaceuticals and Cosmetics:

Effervescent Agent: Used in powders and tablets (like Alka-Seltzer) to create fizz when mixed with water.
pH Adjuster: Added to creams, gels, and lotions to ensure they are at the correct, skin-friendly pH.
Antioxidant: Stabilizes active ingredients in medicines and cosmetics.

Other Uses: Water softening, photography, and as a reagent in chemical laboratories.

In summary, citric acid monohydrate is the hydrated crystalline form of a natural acid, prized for its sour taste, preservative qualities, and ability to bind to minerals, making it a ubiquitous ingredient in our food, homes, and personal care products.