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Citric Acid Monohydrate

CAS Number: 5949‑29‑1

Synonyms: Citric acid monohydrate; 1,2,3,5‑Tetrahydroxypropanetricarboxylic acid monohydrate

Chemical Formula:C₆H₈O₇·H₂O

Product Introduction

Citric acid monohydrate is the hydrated crystalline form of citric acid, commonly used in food, pharmaceuticals, and lab reagents. It’s more stable at room temperature when crystallizing and is widely used for analytical, buffer, and chelation purposes.

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Physical & Chemical Properties

Property	Value
Appearance	White crystalline powder or granules
Purity	≥ 99.5 %
Melting Point	~153 °C (loses water)
Molecular Weight	210.14 g/mol
Solubility in Water	59.2 % w/w @ 20 °C
Water of Crystallization	1 mole H₂O per mole citric acid

Applications

Analytical & lab reagent: Frequently used in buffer solutions (e.g. SSC), enzymatic and biochemical assays.
Food & beverages: Ingredient in food products, same functions as anhydrous form.
Chemical intermediate: Used in synthesis, crystal growth studies, buffer formulations. labchemwako.fujifilm.com+3chemicalbook.com+3fishersci.com+3