| item |
index |
||
| superior grade |
a grade |
qualified |
|
| appearance |
colorless transparent liquid, no smell, no impurities |
||
| chromaticity, hazen unit (platinum-cobalt color code) ≤ |
5 |
10 |
|
| density,ρ20/(g/cm3) |
0.791 ~ 0.792 |
0.791 ~ 0.793 |
|
| boiling range①（0℃，101.3kpa）/℃ ≤ |
0.8 |
1.0 |
1.5 |
| potassium permanganate test /min≥ |
50 |
30 |
20 |
| water miscibility test |
pass（1 3） |
pass（1 9） |
null |
| water % ≤ |
0.10 |
0.15 |
0.20 |
| acid（hcooh）%≤ or alkali （nh3）%≤ |
0.0015 0.0002 |
0.0030 0.0008 |
0.0050 0.0015 |
| carbonyl compound（hcho）%≤ |
0.002 |
0.005 |
0.010 |
| evaporation residue %≤ |
0.001 |
0.003 |
0.005 |
| sulphuric acid washing test, hazen unit (platinum-cobalt color code) ≤ |
50 |
null |
|
| note: ① including 64.6 ℃ plus or minus 0.1 ℃ |
|||
packaging, transportation and storage:
industrial methanol is used to clean dry container packaging, the packaging container should be tightly sealed, stored in dry, ventilated, cool, avoid the hot sun exposure and isolation from heat source and fire.