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Citric Acid (Anhydrous) is a natural occurring fruit acid that can be used in DIY home cleaning, cosmetics and personal care products. Citric acid is fully biodegradable and is the most widely used organic acid and pH-control agent. It’s safe for the planet’s water system, and contains no harsh toxins that would pose a threat to your family’s health.
Citric acid exists in two forms as anhydrous form and monohydrated form. The difference between anhydrous and monohydrate citric acid is that the anhydrous citric acid has no water of crystallisation whereas the monohydrate citric acid has a water molecule associated with one citric acid molecule.
Citric acid is used as an excipient in pharmaceutical preparations due to its antioxidant properties. It maintains stability of active ingredients and is used as a preservative. It is also used as an acidulant to control pH and acts as an anticoagulant by chelating calcium in blood.
Physical State: Solid Powder
Form: Crystalline
Appearance: White
Odour: Odourless
Molecular Formula: C6H8O7
Molecular Mass: 192,124 g/mol
Classification: Tricarboxylic Acid
pH (value): 2.2 50g/L (20°C)
Melting Point/Range: 135-152 °C / 275-305.6 °F
Boiling Point/Range: 310°C
Flash Point: 173.9°C / 345°F
Evaporation Rate: N/A
Density: 1.54 g/cm3 (20 °C)
Bulk Density: 800 - 1000 kg/m3
Solubility: Soluble in Water
Also Soluble In: Alcohol, Acetone, Dimethyl Sulfoxide, and Ethyl Acetate.
Autoignition Temperature: 345°C / 653°F
Decomposition Temperature: > 170°C
Viscosity: N/A
Reactive Hazard: None known, based on information available.
Stability: Stable under normal conditions.
Conditions to Avoid: Incompatible products. Excess heat. Temperatures above 170°C. Avoid dust formation.
Incompatible Materials: Strong oxidising agents, Strong bases.
Hazardous Decomposition Products: Carbon monoxide (CO), Carbon dioxide (CO2).
Hazardous Polymerization: Hazardous polymerization does not occur.
Hazardous Reactions: None under normal processing.