| 1 | 821-00-1 | Sorbamide | C6H9NO | 111.14176 | | |
| 2 | 821-06-7 | trans-1,4-dibromo-2-butene | C4H6Br2 | 213.9 | 48-51°C(lit.) | slightly soluble |
| 3 | 821-07-8 | NISTC821078 | C6H8 | 80.13 | -12°C | |
| 4 | 821-08-9 | 1,5-Hexadien-3-yne | C6H6 | 78.11 | -88°C | |
| 5 | 821-09-0 | 4-Penten-1-ol | C5H10O | 86.13 | 14.19°C (estimate) | Solubility in water: 57 g/L (25°C) |
| 6 | 821-10-3 | 1,4-Dichloro-2-butyne | C4H4Cl2 | 122.98 | 162-165 °C | |
| 7 | 821-11-4 | (2E)-2-Butene-1,4-diol | C4H8O2 | 88.11 | 7°C(lit.) | |
| 8 | 821-13-6 | Allyl azide | C3H5N3 | | | |
| 9 | 821-14-7 | diethyldiazene | C4H10N2 | | | |
| 10 | 821-16-9 | Hexadecanoic acid 3-hydroxypropyl ester | C19H38O3 | 314.5 | | |
| 11 | 821-17-0 | Oleic acid 3-hydroxypropyl ester | C21H40O3 | 340.54 | | |
| 12 | 821-25-0 | 1,1-dichloroheptane | 821-25-0 | | 23.5°C (estimate) | |
| 13 | 821-33-0 | 4,4'-oxybisbutan-2-ol | C8H18O3 | 162.23 | <25 °C | |
| 14 | 821-34-1 | Propanoic acid, 3,3'-oxybis-, disodium salt | C6H8Na2O5 | 206.10426 | | |
| 15 | 821-38-5 | 1,12-Dodecanedicarboxylic acid | C14H26O4 | 258.35 | 124-127 °C (lit.) | SLIGHTLY SOLUBLE |
| 16 | 821-41-0 | 5-Hexen-1-ol | C6H12O | 100.16 | <-20°C | Miscible with water. |
| 17 | 821-42-1 | Glutaconaldehyde | | | | |
| 18 | 821-44-3 | 1-Penten-3-yne, 5-methoxy- | C6H8O | 96.12712 | | |
| 19 | 821-48-7 | Bis(2-chloroethyl)amine hydrochloride | C4H9Cl2N·HCl | 178.49 | 212-214℃ | SOLUBLE |
| 20 | 821-55-6 | 2-Nonanone | C9H18O | 142.24 | -21 °C (lit.) | ca 0.5 g/L |
| 21 | 821-57-8 | 7-CHLOROHEPTANOIC ACID | C7H13ClO2 | 164.63 | | |
| 22 | 821-60-3 | 1,3-Butadiene-1,4-dicarbonitrile | C6H4N2 | 104.10936 | | |
| 23 | 821-62-5 | 1-Pentene, 5-azido- | C5H9N3 | 111.15 | | |
| 24 | 821-67-0 | Di(n-propyl)diazene | | | | |
| 25 | 821-69-2 | 1,3-propanediyl dioleate | C39H72O4 | 604.98658 | | |
| 26 | 821-74-9 | 4,5-Nonadiene | C9H16 | 124.22 | | |
| 27 | 821-76-1 | 1,7-dichloroheptane | C7H14Cl2 | 169.09 | 23.5°C (estimate) | |
| 28 | 821-77-2 | 6-azidohex-1-ene | C6H11N3 | 125.18 | | |
| 29 | 821-91-0 | 3-(dodecylamino)propane-1,2-diol | C15H33NO2 | 259.43 | 76.0-76.5 °C | |
| 30 | 821-93-2 | Tridecane, 1,1-dichloro- | C13H26Cl2 | 253.25 | | |
| 31 | 821-95-4 | 1-Undecene | C11H22 | 154.29 | -49 °C (lit.) | Solunle in ether, chloroform and ligroin. Insoluble in water. |
| 32 | 821-96-5 | (Z)-2-Undecene | C11H22 | 154.29 | -66.5°C | |
| 33 | 821-97-6 | (Z)-3-Undecene | | | | |
| 34 | 821-98-7 | NISTC821987 | C11H22 | 154.29 | -97°C | |
| 35 | 821-99-8 | 1,9-Dichlorononane | C9H18Cl2 | 197.15 | | Insoluble in water. |