Product Details
As a high-purity, multi-application organic compound, it is qualified for use in food preservation systems, pharmaceutical additive manufacturing, industrial cleaning operations and cosmetic production workflows. The product conforms to the full set of USP, FCC and BP quality specifications. It can be provided in bulk quantities or application-specific tailored packaging, and corresponding Certificates of Analysis (CoA) will be issued upon formal request.
Product Properties
| 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 |
| Water Solubility | 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 Number | 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 Chemistry Reference | 1,2,3-Propanetricarboxylic acid, 2-hydroxy-(77-92-9) |
| EPA Substance Registry System | Citric acid (77-92-9) |
Safety Information
| 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
Citric acid (CAS#77-92-9) is a biodegradable weak organic tricarboxylic acid, widely used across major industries for its reliable acidulation, chelation and pH-buffering properties:
· Food & Beverage: Acts as the leading food-grade acidulant for carbonated drinks, juices and confectionery; functions as a pH regulator and preservative to extend shelf life and optimize gelling performance in jams.
· Pharmaceuticals: Serves as a chelating agent, effervescent formulation excipient and blood anticoagulant, stabilizing active ingredients and supporting controlled drug dissolution.
· Cosmetics & Personal Care: Works as a mild alpha-hydroxy acid for gentle exfoliation, stabilizes product pH and enhances preservative efficiency in skincare and hair care products.
· Industrial Cleaning: Acts as a low-corrosion descaling agent for boiler maintenance, and a phosphate-free detergent builder that sequesters metal ions to boost cleaning performance.
· Chemical & Lab Use: Serves as an organic synthesis intermediate for citrate plasticizers, and a standard buffer reagent for histopathological testing and chromatographic analysis.
