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Executive standard: isopropanol for industrial use （GB/T 7814-2017）
Technical requirements for industrial isopropanol base:
Item | Index | |||
Ⅰ | Ⅱ | |||
E1 | E2 | 优等品 | 合格品 | |
Appearance and smell | Transparent liquid, no mechanical impurities and suspended solids, no peculiar smell. | |||
Content/% | ≥99.9 | ≥99.9 | ≥99.9 | ≥99.7 |
Chroma | ≤5 | ≤5 | ≤10 | ≤10 |
Water miscibility test | Pass | |||
Water content/% | ≤0.10 | ≤0.05 | ≤0.10 | ≤0.20 |
Acid (acetic acid)/% | ≤0.0015 | ≤0.0015 | ≤0.002 | ≤0.002 |
Evaporation residue/% | ≤0.001 | ≤0.001 | ≤0.002 | ≤0.002 |
Hydroxyl compounds (acetone)/% | ≤0.005 | ≤0.005 | ≤0.01 | ≤0.02 |
Sulfide（S）/（mg/kg） | — | — | ≤1 | ≤2 |
Reducing potassium permanganate | Qualified | Qualified | — | — |
Easily carbonized substance | Qualified | Qualified | — | — |
Anion/（μg/kg） chlorine（Cl—） Sulfate radical（SO42-） | ≤200 ≤200 | ≤50 ≤50 | — — | — — |
Grain | Negotiation between both parties | — | — | |
Manufacturing
