CASR |
: | 77-93-0 |
Molecular Formula |
: | C12H20O7 |
Molecular Weight |
: | 276.29 |
| Specifications | |
|---|---|
| Description: | Clear, viscous, colorless or almost colorless, hygroscopic, oily liquid’. |
| Appearance of solution: | The substance to be examined is clear and not more intensely colored than reference solution BY6’ |
| Solubility: | Slightly soluble in water, miscible with alcohol, ethanol (96%), slightly soluble in fatty oils. |
| Identification (By Refractive index, 20±0.5°C): | 1.440 -1.446 |
| Identification (By IR): | IR spectra of the sample should be concomitant with IR spectra of the standard. |
| Identification (By GC Chromatogram): | The retention time of the major peak of the sample solution corresponds to that of a similar preparation of triethyl citrate standard as obtained in the assay. |
| Identification (Reaction of esters): | A bluish-red or red color should produce. |
| Identification (Reaction of citrates): | Violet color turning to violet-blue should produce. |
| Assay (By GC) On anhydrous basis: | 99.0% -100.5% |
| Acidity: | Not more than 0.5mL of 0.1 mol/L sodium hydroxide should require to produce blue color. |
| Specific gravity, 25°C: | 1.135-1.139 |
| Refractive index, 25°C: | 1.439-1.441 |
| Refractive index (20°C ± 0.5°C): | 1.440 to 1.446 |
| Related substances (Any impurity): | 0.2% max |
| Related substances (Total impurity): | 0.5% max |
| Water: | 0.25% max |
| Sulfated ash: | 0.1% max |
