A-methylstyrene
DOMO Chemicals produces α-methylstyrene (AMS) as a by-product of our Hock’s phenol synthesis (oxidation of cumene to cumene hydroperoxide (CHP) followed by a separation of CHP into phenol and acetone) in order produce phenol on an industrial scale for further processing into Caprolactam.
Specifications
PROPERTIES AND LOGISTICS:
α-methylstyrene is a combustible, colourless liquid which is not easily soluble and has an unpleasant odour. In the air, AMS can form explosive mixtures. Upon lowering of the temperature or in the presence of strong acids even at room temperature, the substance tends to polymerise – as a result, the formation of high-molecular poly-α-methylstyrene is possible. When stored in mild steel, at a temperature of ≤ 35 °C, a-methylstyrene is storage stable for one year.
Specification Alphamethylstyrene
| Parameter | Limiting value | Testing method |
| Alphamethylstyrene (without water) | min. 99,6 weight % | 81 - 109 |
| Cumene | max. 0.1 weight % | 81 - 109 |
| Acetophenone | max. 0.03 weight % | 81 - 109 |
| Polymers test | clear | ASTM D 2121 - 07 |
| Color | max. 10 Hazen | DIN ISO 6271 |
| Stabilizer, tert. Butylbrenzcatechine | ca. 10 - 20 ppm | STM D 4590 - 06 |
| Phenol | max. 40 ppn | 81 - 5 |