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Opis
Citric Acid Monohydrate
Other Names: 2-Hydroxy-1,2,3-propane-tricarboxylic acid monohydrate
CAS Number: 5949-29-1
EC Number: 201-069-1
Chemical Formula: C₆H₈O₇·H₂O
Molar Mass: 210.14 g/mol
Appearance: White, crystalline solid
Chemical and Physical Properties
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Density: ~1.54 g/cm³
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Melting Point: 100–104°C (loss of water of crystallization)
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Boiling Point: Decomposes before boiling
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Solubility in Water: Highly soluble (590 g/L at 20°C)
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Solubility in Other Solvents: Soluble in ethanol and acetone
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Odor: Odorless
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pH (1% solution): ~2.2
Applications
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Chemical Industry: Used as a chelating agent and pH regulator in various formulations.
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Laboratory Use: Employed as a buffer component and acidulant in experiments.
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Cleaning Products: Acts as a descaling agent and ingredient in eco-friendly cleaners.
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Cosmetics and Personal Care: Used as a pH adjuster and mild exfoliant.
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Photography and Textile Processing: Occasionally used in dyeing and photographic baths.
Safety
Signal Word: Warning
H315 (14.2%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (93.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (45.3%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Handling and Storage
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Storage Conditions: Store in a tightly sealed container in a cool, dry, well-ventilated area away from incompatible substances such as strong oxidizers.
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Handling Precautions: Avoid generating dust. Use suitable protective equipment when handling large quantities.
