item |
index |
|
ⅰtype |
ⅱtype |
|
appearance |
transparent liquid, no insoluble water and mechanical impurities |
|
color, hazen unit (platinum-cobalt color code) ≤ |
10 |
20 |
density(20℃),kg/m3 |
null |
0.865 ~ 0.868 |
purity /% ≥ |
99.9 |
null |
hydrocarbon impurity content: benzene /% ≤ c3 aromatic hydrocarbons /% ≤ none aromatic hydrocarbons /% ≤ |
0.03 0.05 0.1 |
0.10 0.10 0.25 |
acid colorimetric |
the acid layer is not darker than the standard solution containing 0.2g potassium dichromate in 1000ml dilute acid |
|
total sulfur content /(mg/kg) ≤ |
2 |
|
evaporation residue mg/100ml ≤ |
3 |
|
neutral test |
neutral |