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cf3-chcl-cf3
cf3-chcl-cf3

cf3-chcl-cclf2
cf3-chcl-cclf2

chcl cargo handling corporation ltd
chcl cargo handling corporation ltd.

reprendre par du chcl 3 anhydre.
the residue is taken up in anhydrous chcl.sub.3.

h2c=ccl2 clhc=chcl ch2cl2 h3coch2ch2och3
ch3con(ch3)2 hcon(ch3)2 (ch3)2so

ir (chcl 3 ) : 1749, 1600 cm -1 .
ir (chcl 3 ): 1749, 1600 cm −1 .

2903.49.00.11 chlorodifluorométhane chcl f2 hcfc-22
2903.49.00.11 chlorodifluoromethane chcl f2 hcfc-22

ir (chcl 3 ) : 1746, 1622 à 1695 cm -1 .
ir (chcl 3 ): 1746, 1622 to 1695 cm −1 .

contrôle : ir chcl 3 cm -1 hétérocycle et aromatique : 1627, 1506, 1484.
control ir chcl.sub.3 cm.sup.-1 heterocycle and aromatic: 1627, 1506, 1484.

ir(chcl 3 ) : 2934, 1725, 1664, 1436, 1274, 1201, 1149, 1032.
ir(chcl.sub.3): 2934, 1725, 1664, 1436, 1274, 1201, 1149, 1032.

rf = 0,40 (chcl 2 -meoh-nh 4 oh 80-20-4).
rf=0.40 (chcl2-meoh-nh4oh 80-20-4).

rendement 13,2 g ccm (chcl₃:meoh:acoh, 45:4:1):r f = 0,7 2.
yield:13.2 grams. tlc:(chcl.sub.3 :meoh:acoh, 45:4:1):r.sub.f =0.7. 2.