| 1 | 557-00-6 | propyl isovalerate | C8H16O2 | 144.21 | -63.35°C (estimate) | |
| 2 | 557-01-7 | 2(1H)-Pyrimidinone | C4H4N2O | 96.09 | 177-178 °C(Solv: ethyl acetate (141-78-6)) | |
| 3 | 557-04-0 | Magnesium Stearate | C36H70MgO4 | 591.24 | 200 °C (lit.) | Insoluble |
| 4 | 557-05-1 | Zinc stearate | C36H70O4Zn | 632.33 | 128-130 °C (lit.) | Insoluble |
| 5 | 557-06-2 | (Z)-(octadecanoato-O)(9-octadecenoato-O)zinc | C36H68O4Zn | 630.32 | | |
| 6 | 557-07-3 | zinc dioleate | C36H66O4Zn | 628.3 | 70°C (rough estimate) | insoluble H2O; soluble alcohol, ether, CS2, benzene, petroleum ether [MER06] |
| 7 | 557-08-4 | Zinc undecylenate | C22H38O4Zn | 431.92 | 118-121 °C (lit.) | |
| 8 | 557-09-5 | zinc dioctanoate | C16H30O4Zn | 351.8 | 136° | slightly soluble boiling H2O; soluble boiling alcohol [HAW93] |
| 9 | 557-11-9 | Allylurea | C4H8N2O | 100.12 | 84-86°C(lit.) | |
| 10 | 557-17-5 | 1 -Methoxypropane | C4H10O | | | |
| 11 | 557-17-5 | METHYL N-PROPYL ETHER | C4H10O | 74.12 | -139.18°C | 29.6g/L(25 ºC) |
| 12 | 557-18-6 | MAGNESIUM DIETHYL | C4H10Mg | 82.43 | 0° | |
| 13 | 557-19-7 | Nickel(II) cyanide | C2N2Ni | | >200 °C | |
| 14 | 557-19-7 | NICKEL CYANIDE | C2N2Ni | 110.73 | 200°C -4H₂O | |
| 15 | 557-20-0 | Diethylzinc | C4H10Zn | 123.51 | −28°C(lit.) | REACTS VIOLENTLY |
| 16 | 557-21-1 | zinc cyanide | C2N2Zn | 117.444 | 800° dec. | 4.7mg/L at 20℃ |
| 17 | 557-22-2 | 1,2-Dithiolane | C3H6S2 | 106.21 | | |
| 18 | 557-24-4 | Maleamidic acid | C4H5NO3 | 115.09 | 158-161 °C (lit.) | |
| 19 | 557-25-5 | 1-MONOBUTYRIN | C7H14O4 | 162.18 | | |
| 20 | 557-27-7 | magnesium dipropionate | C6H10MgO4 | 170.4462 | | |
| 21 | 557-28-8 | Zinc propionate | C6H10O4Zn | 211.53 | | solubility in H2O, w/w%: 32 (15°C) [MER06] |
| 22 | 557-30-2 | Glyoxime | C2H4N2O2 | 88.07 | 178-180°C | |
| 23 | 557-31-3 | allyl ethyl ether | C5H10O | 86.1323 | -140°C (estimate) | Soluble in organic solvents, miscible with ethanol, diethyl ether. Insoluble in water. |
| 24 | 557-34-6 | zinc acetate | C4H6O4Zn | 183.48 | 83-86 °C | Soluble in water, alcohol, dilute mineral acids and alkalies. |
| 25 | 557-35-7 | 2-Bromooctane | C8H17Br | 193.12 | | |
| 26 | 557-36-8 | 2-IODOOCTANE | C8H17I | 240.12 | | |
| 27 | 557-39-1 | Magnesium formate | C2H2MgO4 | | | |
| 28 | 557-39-1 | MAGNESIUM FORMATE 0.2 M SOLUTION* | CH4MgO2 | 72.35 | | |
| 29 | 557-40-4 | Diallyl ether | C6H10O | 98.14 | -6°C | insoluble |
| 30 | 557-41-5 | Zinc formate | C2H2O4Zn | 155.42 | >250°C (dec.) | Soluble in water (52 g/L at 20°C). |
| 31 | 557-42-6 | ZINC THIOCYANATE | CHNSZn | 124.47 | | mol/L solution H2O: 0.144 (18°C) [KRU93]; soluble alcohol [MER06] |
| 32 | 557-48-2 | (2E,6Z)-nona-2,6-dien-1-al | C9H14O | 138.21 | | |
| 33 | 557-58-4 | Ximeninic Acid | C18H30O2 | 278.43 | | |
| 34 | 557-59-5 | tetracosanoic acid | C24H48O2 | 368.64 | 80-82°C | |
| 35 | 557-61-9 | Octacosanol | C28H58O | 410.76 | 81-83°C | <0.1 g/100 mL at 21.5 ºC |
| 36 | 557-66-4 | Ethylamine,hydrochloride | C2H8ClN | 81.54 | 107-108°C(lit.) | soluble |
| 37 | 557-68-6 | Bromoiodomethane | CH2BrI | 220.84 | | |
| 38 | 557-75-5 | vinyl alcohol | C2H4O | 44.05 | 9 °C | |
| 39 | 557-76-6 | FLUOROMETHANE-D1 | CH2DF | 35.04 | | |
| 40 | 557-83-5 | H-ALA-OBZL HCL | C10H14ClNO2 | 215.68 | | |
| 41 | 557-89-1 | chlorodimethylarsine | C2H6AsCl | 140.44 | | |
| 42 | 557-91-5 | 1,1-Dibromoethane | C2H4Br2 | 187.86 | -63°C | |
| 43 | 557-93-7 | 2-Bromopropene | C3H5Br | 120.98 | -87°C | Immiscible with water. |
| 44 | 557-95-9 | BROMODIIODOMETHANE | CHBrI2 | 346.73 | | |
| 45 | 557-98-2 | 2-chloropropene | C3H5Cl | 76.52 | -138 °C | Not miscible or difficult to mix in water. |
| 46 | 557-99-3 | acetyl fluoride | C2H3FO | 62.04 | −84°C(lit.) | |