246
M. Yusuf
Table 1
(continued)
OPFRs classes
Chemical structures
OH
OH
HO
P
P
O
O
O
O
O
O
P
O
O
O
Ar-Phosphonate derivative 6 (Phenolic)
OH
HO
P
O
O
O
P
O
O
O
HO
OH
P
O
O
O
P
O
O
O
Ar-Phosphonate derivative 7 (Phenolic)
Organophosphinites
P
O
OH
Diethylphosphinic acid (DEPA)
PH
O
HO
Phenylphosphinic acid (PPA)
(continued)