Medium chain chlorinated paraffins MCCPs

Keywords Chlorinated paraffins, Short chain chlorinated paraffins (SCCPs), Medium chain chlorinated paraffins (MCCPs), Analytical methods, Mass spectrometry... 

Interannual changes in production of total chlorinated paraffins (CPs) reported by the Flame Retardant Chemicals Association of Japan (FRCJ) [2] are shown in Fig. 2. FRCJ also reported the production and shipment of SCCPs, medium-chain chlorinated paraffins (MCCPs), and long-chain chlorinated paraffins (LCCPs) in 2001 [2] as shown in Table 1. It indicates that 500 tons per year of SCCPs were shipped, suggesting that SCCPs were not used for polyrvinyl chloride. In the Kanto region, 500 tons per year of SCCPs were mainly used in oil fluids. In contrast, nearly 200 tons of SCCPs were shipped to the Kansai region for other uses including flame retardant additives and lipid additives for rubber, paint, and adhesives. As shown in Table 1, approximately half of SCCPs were used in oil fluids and the other half for other products. 

F.M. Christensen S.I. and Olson, Risk assessment of Short and Medium Chain Chlorinated Paraffin s (SCCP and MCCP), Technical Report, Technical University of Denmark, 2002. 

MCCP Medium chained chlorinated paraffin(s) (C14-C16-alkyl derivatives)... 

Chlorinated paraffins are very complex mixtures and are often divided into several groups depending on the chain, length of the starting material and the amount of chlorine in the final product. Three major groups are short-, medium- and long-chained chlorinated paraffins (SCCPs, MCCPs and LCCPs). 

Most of the extenders used in plasticised PVC compositions to reduce the amount of plasticiser required are epoxidised compounds, hydrocarbons or chlorohydrocarbons, including a few medium chain length chlorinated paraffins (MCCPs). These last substances typically have 14 to 17 carbon atoms, and unlike their longer chain analogues they are thought to pose a threat to some types of aquatic life. Dover Chemical Corp. is marketing low volatility liquid chlorinated hydrocarbon products under the name Paroil X-10 as extenders to replace part of the plasticiser in PVC. 

Chlorinated paraffins are normally divided into three sub-groups short-chain (SCCP), medium-chain (MCCP) and long-chain (LCCP) chlorinated paraffins. 

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