1 | Description | Colourless, highly refrective liquid, becoming darker with age and on exposure to light. saturated solution of it is slightly acid to litmus. | Colourless or yellowish to brownish-yellow or pinkish, highly refrective liquid, becoming darker with age and on exposure to light. A saturated solution of it is neutral or slightly acid to litmus. |
2 | Solubility | Complies | Sparingly soluble in water, usually forming a cloudy solution; dissolves in solutions of fixed alkali hydroxides. Miscible with alcohol, ether, glycerine and methylene chloride. (USP/Ph.Eur) |
3 | Identification A (By IR) | Complies | To comply the test. (USP/Ph.Eur) |
4 | Identification B (By GC Chromatogram) | Complies | The retention time of the major peak of the sample solution corresponds to that of the standard solution, as obtained in the assay. (USP) |
5 | Assay (By GC) | 99.12% | 98.0% - 102.0% (USP) |
6 | Relative density | 1.031 | About 1.03 (Ph.Eur) |
7 | Melting point | 11°C | About 11 °C (Ph.Eur) |
8 | Boiling point | 204°C | About 202 °C (Ph.Eur) |
9 | Appearance of Solution | Complies | Freshly prepared solution S is not more opalescent than reference suspension III and not more intensely coloured than reference solution BY7. (Ph.Eur) |
10 | Acidity | Complies | Not more than 0.5ml of 0.01 M sodium hydroxide is required to change the colour of the indicator to yellow. (Ph.Eur) |
11 | Organic Imupurities (Orthocresol) | Not detected | Not more than 0.5% (USP/Ph.Eur) |
12 | Organic Imupurities (Paracresol) | 0.48% | Not more than 0.5% (USP/Ph.Eur) |
13 | Organic Imupurities (Any unspecified impurity) | 0.07% | Not more than 0.1% (USP/Ph.Eur) |
14 | Organic Imupurities (Total impurities) | 0.6% | Not more than 1.0% (USP/Ph.Eur) |
15 | Clarity of Solution A (By Chemical Test) | Complies | A clear solution is obtained. (USP) |
16 | Clarity of Solution B (By Chemical Test) | Complies | A clear solution is obtained. (USP) |
17 | Residue on evaporation | 0.005% | 0.1% max |