2-Hydroxybiphenyl CAS90-43-7 Organic Phosphorus Intermediates
Molecular weight 170.2
Color white or white
Physical state solid (flake or crystalline)
Specific gravity (g/cm3 at 25oC) 1.2
Dissociation constant (at 25oC) 9.9
PH value (at 22.7oC)
In aqueous solution, it is 6.1.
Recommended pH value range 7-13.5
Stability is stable and durable under normal conditions.
Incompatible with strong oxidants
Melting point (oC) 56-58
Boiling point (oC) 286
Flash point (oC) 13
Because the polymer containing organic phosphorus compounds will
form graphite-like carbonization film on the surface of the
material when burning, which makes the polymer isolated from air,
has good flame retardant performance, high flame retardant
efficiency, low volatility, good oil and hydrolysis resistance, and
will gradually replace the inorganic and containing materials used
today. Halogen flame retardant materials. A new phosphorus
containing flame retardant intermediate DOPO can be synthesized
from ortho phenyl phenol.