| Test |
Monograph |
Limits |
Typical Lot Analysis |
| Assay (corrected for water), min |
ACS |
99.5% |
99.9% |
| Assay (anhydrous basis), min |
NF |
99.0% |
99.7% |
| Appearance |
ACS |
Clear liquid w/characteristic odor |
Pass |
| Identification (IR) |
NF |
Conforms to infrared spectra |
Pass |
| Identification test B(GC) |
NF |
Conforms to Reference Chromatogram |
Pass |
| Specific Gravity @ 25°C, max |
NF |
0.7890 |
0.787 |
| Color (APHA), max |
ACS |
10 |
<10 |
| Residue After Evaporation, max |
ACS |
10ppm |
<10ppm |
| Non-Volatile Residue, max |
NF |
0.004% |
<0.001% |
| Readily Oxidizable Substances |
NF |
Color not completely disappear in 15min. |
Pass |
| Substances Reducing KMnO4 |
ACS |
Pass |
| Solubility In Water |
ACS |
Solution remains clear for 30min. |
Pass |
| Titrable Acid, max |
ACS |
0.0003meq/g |
0.0002meq/g |
| Titrable Base, max |
ACS |
0.0006meq/g |
0.0001meq/g |
| Aldehyde (as HCHO), max |
ACS |
0.002% |
<0.002% |
| IPA, max |
ACS |
0.05% |
0.001% |
| Methanol, max |
ACS |
0.05% |
0.03% |
| Water, max |
NF |
0.5% |
0.30% |