CASR |
: | 67-56-1 |
Molecular Formula |
: | CH3OH |
Molecular Weight |
: | 32.04 |
| Specifications | |
|---|---|
| Appearance/Description: | Clear, colorless, volatile, hygroscopic liquid and having a characteristic odor. |
| Solubility: | Miscible with water, with alcohol, with ether, with benzene, with methylene chloride and with most other organic solvents. |
| Boiling point: | About 64°C. |
| Identification (By IR): | IR spectra of the Sample should be concomitant with Reference spectrum of Methanol. |
| Identification (By Chromatogram): | The retention time of the major peak of the Sample solution corresponds to that of the Standard solution. |
| Identification (By Refractive index, 20 ± 0.5°C): | 1.328 – 1.330 |
| Appearance: | Solution should be clear and colorless. |
| Acidity or Alkalinity: | NMT 0.9 mL of 0.01M sodium hydroxide should require to change the color of the indicator to pink. |
| Alkalinity (as ammonia): | NMT 0.20 mL of 0.020 N sulfuric acid is required to produce a pink color (3 ppm) |
| Relative density (20°C): | 0.791 – 0.793 |
| UV absorbance profile (10mm cell) at 230nm: | NMT 0.15 |
| UV absorbance profile (10mm cell) at 250nm: | NMT 0.05 |
| UV absorbance profile (10mm cell) at 270nm: | NMT 0.02 |
| UV absorbance profile (10mm cell) at 290nm: | NMT 0.01 |
| Readily carbonizable substances: | No discoloration should develop. |
| Readily oxidizable substances: | The pink color should not completely disappear within 5 min. |
| Impurity A (Benzene): | NMT 2 ppm v/v |
| Related substances (Any impurity): | NMT 0.1% |
| Related substances (Total impurity): | NMT 0.3% |
| Nonvolatile residue / Residue on evaporation: | NMT 0.001% w/w |
| Water: | NMT 0.10% |
| Assay: | NLT 99.5% |
| Acetone and Aldehyde (as acetone): | Any turbidity produced in the Sample solution is not greater than that produced in the Standard solution (NMT 0.003%). |
