Standard of absolute ethanol (GB/T678——2002)
2018-04-25
Mass percent of carbonyl compound
（CO）/%Easy carbonating mattersMass percent of ferrum/%
| Name | Guarantee reagent | Analytical reagent | Chemical reagent |
Mass percent of ethanol | ≥99.8 | ≥99.7 | ≥99.5 |
Density(20℃)/ | 0.789～0.791 | 0.789～0.791 | 0.789～0.791 |
Tested by mixing with water. | Acceptable. | Acceptable. | Acceptable. |
Mass percent of evaporites/% | ≤0.0005 | ≤0.001 | ≤0.001 |
Acidity（H＋）/ | ≤0.02 | ≤0.04 | ≤0.1 |
Basicity（OH－）/ | ≤0.005 | ≤0.01 | ≤0.03 |
Mass percent of moisture/% | ≤0.2 | ≤0.3 | ≤0.5 |
Mass percent of methanol（CH3OH）/% | ≤0.02 | ≤0.05 | ≤0.2 |
Mass percent of | ≤0.003 | ≤0.01 | ≤0.05 |
≤0.003 | ≤0.003 | ≤0.005 | |
Easy carbonating matters | Qualified | Qualified | Qualified |
≤0.00001 | —— | —— | |
Mass percent of zinc/% | ≤0.00001 | —— | —— |
Mass percent of deoxidizing KMnO4 matters（Ｏ）/% | ≤0.00025 | ≤0.00025 | ≤0.0006 |