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4-Dimethylaminoantipyrine
| ITEMS | LIMIT |
| Characteristic | A white crystalline powder |
| Indentification | positive |
| Melting point | 107-109 °C |
| Sulphaced ash | 0.1%max |
| Readily carozable substances | Conforms |
| Chloride | 20PPM(conform)max 10PPM(high-class)max |
| Antipyrine and aminoantipyrine | conforms |
| Heavy metals | 15PPM(conform)max 10PPM(high-class)max |
| Clarity in alcohol solution | Conform |
| Hue in alcohol solution | 2.5ML(conform)max 1.0ML(high-class)max |
| Colored spot | 3(conform)max 1(high-class)max |
| Assay | 99.0-100.55%(conform) 99.5-100.5%(high-class) |
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