1/2 Process01 On line Applications in Phosphorous Chemical Industry Non-destructive optical monitoring of chemical composition can be accomplished using Raman Spectroscopy. Raman spectra can be utilised to distinguish differences in chemical bond structures. This is particularly useful in applications where reactions could progress towards either a desired product or an undesired by-product. The Raman spectrum indicates when local conditions exist which favour one reaction path over another. This qualitative measurement can be developed into a tool to monitor process conditions. Application A basic ingredient used in the synthesis of inflammable products and fertiliser production is PCI3, the naturally favoured reaction product of phosphorous and chlorine. Ho

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