DCM—See Dichloromethane

DCHA (101-83-7) see dicyclohexylamine. DCI LIGHT MAGNESIUM CARBONATE (546-93-0) see magnesite. DCM (75-09-2) see dichloromethane. 

High-performance liquid chromatography (HPLC) grade dichloromethane (DCM) (see Note 2). 

The cyanide anion adds to C-1 in 2-benzoylisoquinolinium salts in water/DCM (dichloromethane), forming Reissert compounds then, just like their quinoline counterparts (see Section 3.2.3), the adducts can be deprotonated by a base with the loss of the iV-substituent and the formation of a 1-cyanoisoquinoline (Scheme 3.16). 

Solvent. At the time of writing of thi.s paper, a final choice for a solvent has not been made. In the Group of Contractors it is clear that dichloromethane (DCM) cannot longer be used for various reasons (toxicity, volatility, safety). During the first year of the development of the Guideline, a number of alternative solvents will be evaluated. Criteria for this evaluation are set (see below in Chapter 4). The... 

For details of polystyrene and polyDMA (polydimethylacrylamide) see Refs. [7, 12] respectively. Copoly(DMA-styrene) was obtained from the activated copolymer sampte 8c (see Table 6) TOL=toluene, EAC=ethyl acetate, THF=trtrahydrofuran, DCM=dichloromethane, DMF =dimethylformamide, DMSO=dimethylsulfo3dde, MeOH=methanoJ, AcOH = acetic acid Polymers with higher, or lower, expanded volumes can be obtained readily for all three polymer types [7, 12], but the pattern of polymer swelling in different solvents is a consequence of the chemical structure of the polymer... 

Figure 4.8 Permeation curves of dichloromethane and methanol vapour in Hyflon AD80X membranes at 25 °C. Time lag calculation by the tangent method (top) and by a direct least squares fit of the entire permeation curve according to Eq. (4.6) (bottom). The thick dark line represents the experimental data the thin brighter line gives the tangent (top) or the least squares fit. The experimental and fitted lines superimpose completely in the case of DCM, and only one curve can be distinguished, whereas MeOH gives a poor fit. See text for further explanation...

There are two types of cellulose acetate fibers. When all three hydroxyl groups per cellulose unit (see Section 17.5.3.1) are acetalized, cellulose triacetate is obtained. Cellulose triacetate is spun from dichloromethane (DCM) plus 5-15% methanol... 

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