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| Certificate of Quality | |||||
| Product name | Adipic acid | Standard | SH/T 1499.1-1997 | ||
| Item | Index value | Actual value | Methods | ||
| Superior Class | First Class | Qualified | |||
| Appearance | White crystalline powder | White crystalline powder | Eyeballing | ||
| Purity,%m/m ≥ | 99.7 | 99.7 | 99.5 | 99.80 | SH/T 1499.1-1997 |
| Melting point, ≥ | 151.5 | 151.5 | 151.0 | 152.8 | GB/T 617-88 |
| Ammonia solution color,Pt-Co ≤ | 5 | 5 | 15 | 1 | SH/T 1499.3-1997 |
| Moisture,% m/m ≤ | 0.20 | 0.27 | 0.40 | 0.17 | GB/T 6283-8 |
| Ash,mg/kg ≤ | 7 | 10 | 35 | 4 | SH/T 1499.4-1997 |
| Iron,mg/kg ≤ | 1.0 | 1.0 | 3.0 | 0.3 | SH/T 1499.5-1997 |
| Nitric acid,mg/kg ≤ | 10.0 | 10.0 | 50.0 | 1.1 | SH/T 1499.7-1997 |
| Oxidable matter,mg/kg ≤ | 60 | 70 | --- | 17 | SH/T 1499.8-1997 |
| Chroma of melts,Pt-Co ≤ | 50 | --- | --- | 10 | SH/T 1499.9-1997 |
polyurethane Apidic Acid
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Adipic Acid polyurethane