Citric Acid
| Formula: | C₆H₈O₇ |
| CAS Number: | 77-92-9 (Anhydrous), 5949-29-1 (Monohydrate) |
| EC Number (EINECS): | 201-069-1 |
| HS Code: | 29181400 |
| UN Number: | Not classified as hazardous for transport |
| IUPAC Name: | 2-Hydroxy-1,2,3-propane-tricarboxylic Acid |
| Also Known As: | 2-Hydroxy-1,2,3-propane-tricarboxylate; Lemon Acid |
| Molecular Weight, g/mol: | 192.12 |
Typical Specifications
| Appearance: | Colorless/white crystalline solid |
| Odor: | Odorless, slightly acidic taste |
| Melting Point, °C: | 153 (decomposes) |
| Boiling Point, °C: | Decomposes before boiling |
| Flash Point, °C: | Not applicable |
| pH (1% solution): | ~2.2 |
| Purity, %: | ≥99.5 |
| Grades Available: | Food Grade, Pharmaceutical Grade, Industrial Grade |
| Packaging: | 25kg bags, 500kg/1000kg jumbo bags |
Applications / Uses
Primary Applications
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Widely used as acidulant, preservative, and flavor enhancer in food & beverages
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Key ingredient in pharmaceuticals and dietary supplements (effervescent tablets)
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pH regulator in cosmetics and personal care products
Secondary Applications
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Used in detergents and cleaning agents (chelating agent for metal ions)
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Intermediate in industrial fermentation processes
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Used in water treatment and electroplating
End Industries Served: Food & Beverages, Pharmaceuticals, Nutraceuticals, Cosmetics, Detergents, Cleaning Products, Water Treatment, Electroplating
Safety & Handling Information
Hazard Class (GHS): Not classified as hazardous under normal conditions of use
Hazard Statements (H-Codes):
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H319: Causes serious eye irritation
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H335: May cause respiratory irritation (dust form)
Precautionary Statements (P-Codes):
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P280: Wear protective gloves/eye protection
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P261: Avoid breathing dust
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water for several minutes
Storage Conditions
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Store in a cool, dry, well-ventilated place
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Keep container tightly closed
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Protect from moisture and direct sunlight
Transport Information
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ADR/RID: Not classified as dangerous goods
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IMDG: Not classified as dangerous goods
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IATA: Not classified as dangerous goods