湖北拓威企业标准
| 项目 | DB11/552-2008 | 拓威企业标准 |
| 含量，% | 31.8~33.3 | 31.8 ~33.2 |
| 密度,(20℃)kg/m3 | 1087.0~1092.0 | 1087.0~1093.0 |
| 折光率,（20℃） | 1.3817~1.3840 | 1.3814~1.3843 |
| 冰点℃ | —— | -11±1 |
| 缩二脲，% | ≤0.3 | ≤0.3 |
| 不溶物，mg/Kg | ≤20 | ≤20 |
| 磷酸盐,mg/Kg | ≤0.5 | ≤0.5 |
| 铝,mg/Kg | ≤0.5 | ≤0.5 |
| 钙, mg/Kg | ≤0.5 | ≤0.5 |
| 铁,mg/Kg | ≤0.5 | ≤0.5 |
| 铬,mg/Kg | ≤0.2 | ≤0.2 |
| 钾,mg/Kg | ≤0.5 | ≤0.5 |
| 镁,mg/Kg | ≤0.5 | ≤0.5 |
| 钠,mg/Kg | ≤0.5 | ≤0.5 |
| 镍,mg/Kg | ≤0.2 | ≤0.2 |
| 锌,mg/Kg | ≤0.2 | ≤0.2 |
| 铜,mg/Kg | ≤0.2 | ≤0.2 |
| 醛,mg/Kg | ≤9 | ≤9 |
| 碳酸盐(以CO2计), % | ≤0.2 | ≤0.2 |
| 碱度（以NH3计），% | ≤0.2 | ≤0.2 |
| 氯化物,mg/Kg | ≤0.2 | ≤0.2 |
| 清洁度, 级 | —— | 不高于,20/18/16 |
