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Citric acidＣＡＳ＃77-92-9
Chemical Name：Citric acid
CAS No.:77-92-9
Appearance:White grit
Molecular Formula：C6H8O7
Molecular weight:192.12
Sample: Available
Products Description of Citric acidＣＡＳ＃77-92-9
Citric acid (anhydrous citric acid) industrial product purity ≥ 99%, white crystalline powder with odorless and extremely sour taste. Melting point 153-159℃, boiling point 310℃ (decomp). Vapor pressure <0.1hPa (20℃), relative density 1.67 (20℃). Solubility in water: soluble, miscible with ethanol, slightly soluble in ether. Stable, incompatible with bases and strong oxidants.
Parameters
| Melting point | 153-159 °C (lit.) |
| Boiling point | 310 °C (decomp) |
| bulk density | 560kg/m3 |
| density | 1.67 g/cm3 at 20 °C |
| 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. |
| pka | 3.14(at 20℃) |
| form | grit |
| color | White |
| Odor | Odorless |
| PH | 3.24(1 mM solution);2.62(10 mM solution);2.08(100 mM solution); |
| explosive limit | 8%, 65°F |
| Odor Type | odorless |
| biological source | synthetic |
| Water Solubility | soluble in Water (1174g/L at 10°C, 1809g/L at 30°C, 3825g/L at 80°C). |
| λmax | λ: 260 nm Amax: 0.20 λ: 280 nm Amax: 0.10 |
| Sensitive | Hygroscopic |
| 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 of Citric acidＣＡＳ＃77-92-9
citric acid has astringent and anti-oxidant properties. It can also be used as a product stabilizer, pH adjuster, and preservative with a low sensitizing potential. It is not usually irritating to normal skin, but it can cause burning and redness when applied to chapped, cracked, or otherwise inflamed skin. It is derived from citrus fruits.
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