Citric acid CAS 77-92-9
Chemical Name: Anhydrous Citric Acid
CAS Registry Number: 77-92-9
Molecular Formula: C₆H₈O₇
Molecular Weight: 216.14
Alternative Synonyms:
- BETZ 6251
- BETZ 0623
- Citric Acid Free Acid
Appearance: Colorless transparent or translucent crystals, also available in granular and fine powder forms
HS Customs Code: 2918140000
Sample Supply: Available
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Anhydrous citric acid is a naturally occurring substance and an essential intermediate substance involved in the physiological metabolic processes of animals and plants. As one of the most widely applied organic acids globally, it enjoys extensive utilization across food manufacturing, pharmaceutical production and fine chemical industries.
This product is odorless, featuring an intense, palatable sour taste accompanied by a mild astringent lingering flavor. It will gradually effloresce when exposed to warm air, while presenting slight deliquescence characteristics under high-humidity atmospheric conditions.
Additional core physical properties: Easily soluble in water and soluble in ethanol; stable under regular sealed storage environments; no toxic irritation under standard application dosages.
Parameters
| Property | Value |
| Melting point | 153-159 °C (lit.) |
| Boiling point | 248.08°C (rough estimate) |
| density | 1.67 g/cm3 at 20 °C |
| bulk density | 560kg/m3 |
| vapor density | 7.26 (vs air) |
| vapor pressure | <0.1 hPa (20 °C) |
| refractive index | 1.493~1.509 |
| FEMA | 2306 | CITRIC ACID |
| Fp | 100 °C |
| storage temp. | 2-8°C |
| solubility | Citric acid also dissolves in absolute (anhydrous) ethanol (76 parts of citric acid per 100 parts of ethanol) at 15 °C. |
| form | grit |
| pka | 3.14(at 20℃) |
| color | White |
| PH | 3.24(1 mM solution);2.62(10 mM solution);2.08(100 mM solution); |
| Odor | Odorless |
| biological source | synthetic |
| Odor Type | odorless |
| explosive limit | 8%, 65°F |
| soluble in Water | 1174g/L at 10°C, 1809g/L at 30°C, 3825g/L at 80°C. |
| Sensitive | Hygroscopic |
| λmax | λ: 260 nm Amax: 0.20; λ: 280 nm Amax: 0.10 |
| Merck | 14,2326 |
| JECFA Numbr | 218 |
| BRN | 782061 |
| Stability: | Stable. Incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates. |
| InChIKey | KRKNYBCHXYNGOX-UHFFFAOYSA-N |
| LogP | -1.64 |
| CAS DataBase Reference | 77-92-9(CAS DataBase Reference) |
| NIST Chemisty Reference | 1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9) |
| EPA Substance Registry System | Citric acid (77-92-9) |
Safety Information
| Item | Details |
| Hazard Codes | Xi,C,T |
| Risk Statements | 41-36/37/38-36/38-37/38-34-36-35-61-60 |
| Safety Statements | 26-39-37/39-24/25-36/37/39-45-36-53 |
| RIDADR | UN 1789 8/PG 3 |
| WGK Germany | 1 |
| RTECS | GE7350000 |
| F | 9 |
| TSCA | Yes |
| HS Code | 2918 14 00 |
| Hazardous Substances Data | 77-92-9(Hazardous Substances Data) |
| Toxicity | LD50 in mice, rats (mmol/kg): 5.0, 4.6 i.p. (Gruber, Halbeisen) |
Product Application of Citric acid CAS#77-92-9
Food Industry
Acidity regulator, acidulant, food additive, flavoring agent, taste modifier
Pharmaceutical & Medical Industry
Raw material for Chinese medicine reference substances, standard reagent for Chinese Pharmacopoeia test solutions, auxiliary material for pharmaceutical formulations, proteomics experimental reagent
Flavor & Fragrance Sector
Key raw material for various flavors and fragrances
Chemical & Laboratory Analysis
Analytical standard reagent, common laboratory organic acid
Organic Chemical Synthesis
Core organic chemical raw material for synthetic processes, plant extraction auxiliary agent
Factory and Equipment Show
Fast delivery time
Inventory 2-3 working days New production 7-10 working days
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