ethylene glycol
| sampling location | Finished cans | Inspection
standards |
GB/T4649-2018 | |
| sampling date | 2023.08.08 | Serial Number | 20230807 | |
| inspection date | 2023.08.08 | Quantity | 1109 tons | |
| Inspectors | mame | Auditor | Peng Run | |
|
Test items |
index |
test result |
||
| Polymerization
grade |
Industrial
grade |
|||
| Appearance | Transparent liquid without mechanical impurities | |||
| Ethylene glycol, w/% ≥ | 99.9 | 99.0 | 99.92 | |
| Diethylene glycol w/% ≤ | 0.050 | 0.600 | 0.0009 | |
| 1,4-Butanediol w/% | Report | 0.0028 | ||
| 1,2-Butanediol w/% | Report | 0.0031 | ||
| 1,2-Hexanediol w/% | Report | 0.0046 | ||
| Vinyl carbonate w/% | Report | 0.0015 | ||
| Chroma (-
diamond number) |
Color before heating ≤ | 5 | 10 | <5 |
| Chromaticity after heating with hydrochloric acid ≤ | 20 | - | <10 | |
| Density 20C, g/cm3 | 1.1128-1.1138 | 1.1125-1.1140 | 1.1133 | |
| Boiling range
(0°C101.3KPa) |
initial point °C ≥ | 196.0 | 195.0 | 196.1 |
| dry point °C ≤ | 199.0 | 200.0 | 197.2 | |
| Moisture w/% ≤ | 0.08 | 0.2 | 0.04 | |
| Acidity (as acetic acid) mg/kg ≤ | 10 | 30 | 5.10 | |
| Iron contentmg/kg ≤ | 0.1 | 5 | not detected | |
| Ash mg/kg ≤ | 10 | 20 | not detected | |
| Aldehyde content (calculated as formaldehyde) mg/kg ≤ | 8 | - | 0.91 | |
|
UV transmittance% |
220nm ≥ | 75 | - | 89.3 |
| 250nm | Report | - | 93.2 | |
| 275nm ≥ | 92 | - | 96.4 | |
| 350nm ≥ | 99 | - | 99.9 | |
| Chloride ion (mg/kg) ≤ | 0.5 | - | <0.5 | |
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